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Data last updated: Oct 23, 2026, 5:45 PM ETLatest filing: Oct 22, 2026Now: Oct 24, 2026, 10:43 AM ET

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Hayley Stein

Named as an officer, director or promoter on SEC Form D filings · IL · Aug 1, 2025 → Sep 15, 2026

21deals (issuers)
$20.82Breported sold
977investors
24Form D filings
2025–2026years on file
Follow this personLook further ↓PDF

Data last updated Oct 23, 2026, 5:45 PM ET · Courts (RECAP) last checked: Oct 24, 2026, 2:15 AM ET · SEC enforcement last checked: covered by the index scan as of Oct 24, 2026, 2:50 AM ET

The short version

Hayley Stein is listed as an executive officer on 24 SEC Form D filings by 21 issuers between Aug 2025 and Sep 2026. Largest by amount reported sold: Magnetar Constellation Fund, Ltd (Grand Cayman, Cayman Islands (as filed: E9) — pooled investment fund — 2025; $8.6B reported sold to 199 investors), Magnetar PRA Fund Ltd (Grand Cayman, Cayman Islands (as filed: E9) — pooled investment fund — 2025; $3.88B reported sold to 196 investors), MAGNETAR STRUCTURED CREDIT FUND LP (Evanston, IL — pooled investment fund — 2025; $2.11B reported sold to 156 investors), Magnetar Lake Credit Fund LLC (Evanston, IL — pooled investment fund — 2025; $950.3M reported sold to 2 investors), Magnetar Capital Fund II LP (Evanston, IL — pooled investment fund — 2025; $828.8M reported sold to 114 investors) and 16 more (all listed below).

What this means That is a lot of deals — 21 separate companies raised money with this person listed as executive officer. Across those companies the filings report $20.82B sold in total.

Listed alongside David Snyderman (24 shared filings), Magnetar Financial LLC (24 shared filings, management entity), Ross Laser (24 shared filings), Alan Milgate (6 shared filings), Christopher Bodden (6 shared filings) and 12 others.

What this means These are the other officers, directors or promoters the companies named on the same forms — the team around Hayley. Each name links to their own page.

20 of the issuers belong to the sponsor group Magnetar (84 issuers, $42.46B reported sold, 2009–2026).

What this means A sponsor group is one team that sets up a new company for each deal. Magnetar has 84 companies on file and $42.46B reported sold in total — the group page shows the whole track record in one place.

Public records searched: federal courts (CourtListener / RECAP), SEC enforcement releases, state securities regulators (AK, AL, AR, AZ, CA, CO, CT, DC, DE, FINRA, FL, GA, HI, ID, IL, KS, KY, LA, MA, MD, ME, MI, MO, MS, MT, NASAA, NC, ND, NH, NM, NV, NY, OH, OK, OR, PA, RI, SC, SD, TN, TX, UT, VT, WA, WI, WV, WY) — none found.

What this means Nothing turned up where we looked (3 sources). That does not prove there is nothing — it means none was found in those sources on that date.

We compared 24 public filings for Hayley Stein and found 4 differences, 1 worth asking the sponsor about: Form D filed 82 days after the first sale; and more below.

What this means These are differences between the sponsor's own SEC filings — both values, dates and sources are listed in Key records, section 4. Most have ordinary explanations; ask the sponsor.

What the community is saying

Community search for Hayley Stein has not run yet — it is joining a line of 59,971 names; searches run around the clock at the hosts' allowed rate. Searched so far: 683 names.

Community comments are quoted as written by their authors. Sources searched: Bing (site:reddit.com / site:biggerpockets.com) and Reddit's own search, plus DuckDuckGo/Brave/BiggerPockets search when they are answering.

Key records

Five things investors ask first. Items still in human review are counted, not shown.

1. Lawsuits

None found in sources searched — federal courts (CourtListener / RECAP), checked Oct 24, 2026

What was searched

Sources searched: CourtListener bulk data (RECAP dockets as of 2026-09-30; recall-first rule 10-24) — federal district + bankruptcy courts State courts: not covered (one-tap state court links under Look further). PACER: not searched. · Last checked Oct 24, 2026, 2:15 AM ET.

State courts: not covered (one-tap state court links under Look further). No state offers a lawful automated statewide source PartnerFacts can use today. Texas (re:SearchTX) terms prohibit storing results in a database open to third parties; New York (WebCivil) and Massachusetts (MassCourts) require a browser check that blocks scripted queries; California has no statewide index (58 county portals; Rule of Court 2.503 grants name-based access case by case); Florida, Utah and Illinois offer paid or partial access whose terms for automated use are unverified. Washington (dw.courts.wa.gov; bulk index reports under a JISC data-dissemination agreement), Delaware (CourtConnect; Court of Chancery not included) and Arizona (apps.azcourts.gov/publicaccess, which has an official channel to request high-volume access) are the candidates; PartnerFacts will request written permission before any automated search. Federal courts are searched through CourtListener / RECAP.

2. Regulatory actions

None found in sources searched — SEC enforcement releases (index scan as of Oct 24, 2026, 2:50 AM ET) · state securities regulators: 48 regulators (FINRA, NASAA, 37 states) — crawled Oct 24, 2026, 8:48 AM ET

What was searched

SEC enforcement searched: SEC litigation releases and administrative proceedings — respondent names in the sec.gov index titles (30,205 releases, 1995-09-19 to 2026-10-23); release text is read only to confirm a candidate. Names that appear only in the body of a release are not found. — Searched SEC litigation releases and administrative proceedings (1995→ / 2007→) (30,205 records as of Oct 24, 2026, 2:50 AM ET) — nothing matched Hayley Stein..

State securities regulators: Securities regulators searched (64,910 actions): FINRA (38,350 actions, 1995–2026), NASAA (31 actions, 2000–2026; listing starts 1997), AK Division of Banking and Securities (273 actions, 1971–2025), AL Securities Commission (880 actions, 2001–2026), AR Securities Department (1,305 actions, 1998–2026), AZ Corporation Commission Securities Division (411 actions, 2017–2026), CA DFPI (25 actions, 2007–2024; listing starts 2002 — 16 of 12,159 DFPI respondent pages read so far; sponsor-name matches are read first), CO Division of Securities (731 actions, 2001–2026; older years from the Internet Archive (snapshot of 2026-05-02)), CT Department of Banking Securities Division (940 actions, 2006–2026; older years from the Internet Archive (snapshot of 2026-04-22)), DC DISB Securities Bureau (25 actions, 2012–2026), DE DOJ Investor Protection Unit (257 actions, 1987–2026), FL Office of Financial Regulation (49 actions, 2018–2026), GA Secretary of State Securities Division (65 actions, 2015–2026; listing starts 2012), HI DCCA Securities Enforcement Branch (26 actions, 2012–2026), ID Department of Finance Securities Bureau (663 actions, 1994–2026), IL Secretary of State Securities Department (4,122 actions, 2003–2023), KS Insurance Department Securities Division (58 actions), KY Department of Financial Institutions (342 actions, 2005–2026), LA Office of Financial Institutions Securities Division (13 actions, 2010–2025; listing starts 2008), MA Secretary of the Commonwealth Securities Division (125 actions, 2012–2025; live site blocks automated access — loaded from the Internet Archive snapshot of 2026-02-04), MD Attorney General Securities Division (1,054 actions, 2004–2026), ME Office of Securities (539 actions, 2000–2026), MI LARA Corporations, Securities & Commercial Licensing Bureau (201 actions), MO Secretary of State Securities Division (919 actions, 1998–2026), MS Secretary of State Securities Division (209 actions, 1995–2026), MT Commissioner of Securities and Insurance (597 actions, 2000–2026), NC Secretary of State Securities Division (265 actions, 2004–2024), ND Securities Department (711 actions, 1990–2026; the regulator no longer publishes this list live — loaded from the Internet Archive snapshot of 2026-01-06), NH Bureau of Securities Regulation (402 actions, 2002–2026), NM Regulation and Licensing Department Securities Division (90 actions, 2010–2025), NV Secretary of State Securities Division (118 actions, 2018–2026), NY Attorney General Investor Protection Bureau (44 actions, 2012–2026), OH Division of Securities (327 actions, 1993–2006), OK Department of Securities (2,531 actions, 1998–2026), OR Division of Financial Regulation (589 actions, 1988–2026), PA Department of Banking and Securities (1,448 actions, 2008–2024; the regulator no longer publishes this list live — loaded from the Internet Archive snapshot of 2024-08-09), RI DBR Securities Division (98 actions, 2005–2025), SC Attorney General Securities Division (540 actions, 2006–2026), SD Division of Insurance – Securities Regulation (106 actions, 2017–2026), TN Department of Commerce and Insurance Securities Division (405 actions, 1992–2026), TX State Securities Board (936 actions, 1999–2026), UT Division of Securities (772 actions, 2000–2026; older years from the Internet Archive (snapshot of 2010-05-27)), VT DFR Securities Division (137 actions, 2010–2026), WA DFI (2,039 actions, 2001–2026), WI DFI Division of Securities (1,072 actions, 1998–2026), WV Securities Commission (State Auditor) (64 actions), WY Secretary of State Compliance Division (6 actions, 2016–2024) — last crawled Oct 24, 2026, 8:48 AM ET. No machine-readable public listing today for IA, IN, MN, NE, NJ, VA (see docs/state-regulators.md).

3. Bankruptcies

None found in sources searched — federal bankruptcy courts (CourtListener / RECAP), checked Oct 24, 2026

What was searched

Sources searched: Federal bankruptcy courts via CourtListener / RECAP archive (federal district courts, federal bankruptcy courts). State courts: not covered (one-tap state court links under Look further). PACER: not searched (RECAP only). · Last checked Oct 24, 2026, 2:15 AM ET.

State courts: not covered (one-tap state court links under Look further). No state offers a lawful automated statewide source PartnerFacts can use today. Texas (re:SearchTX) terms prohibit storing results in a database open to third parties; New York (WebCivil) and Massachusetts (MassCourts) require a browser check that blocks scripted queries; California has no statewide index (58 county portals; Rule of Court 2.503 grants name-based access case by case); Florida, Utah and Illinois offer paid or partial access whose terms for automated use are unverified. Washington (dw.courts.wa.gov; bulk index reports under a JISC data-dissemination agreement), Delaware (CourtConnect; Court of Chancery not included) and Arizona (apps.azcourts.gov/publicaccess, which has an official channel to request high-volume access) are the candidates; PartnerFacts will request written permission before any automated search. Federal courts are searched through CourtListener / RECAP.

4. Differences between public sources

Comparisons cover issuers and sponsor groups — see the issuer pages under Deals

4 differences found between the filings for Hayley Stein — 1 worth asking about (compared 24 filings on Oct 24, 2026)

Worth asking · Oct 24, 2025 – Jan 14, 2026

Form D filed 82 days after the first sale — Magnetar Opportunity 2025-2 LP

The filing says the first sale was Oct 24, 2025. The Form D was filed Jan 14, 2026 — 82 days later. The rule: a Form D is generally due within 15 days after the first sale, so this one is 67 days past that.

What this means A late notice is common and carries no penalty by itself. It is worth asking the sponsor why the paperwork lagged.

Form D · Jan 14, 2026 ↗Magnetar Opportunity 2025-2 LP — PartnerFacts page ↗
Sources
Note · Jul 10, 2026 – Jul 28, 2026

Form D filed 18 days after the first sale — Magnetar Opportunity 5 LP

The filing says the first sale was Jul 10, 2026. The Form D was filed Jul 28, 2026 — 18 days later. The rule: a Form D is generally due within 15 days after the first sale, so this one is 3 days past that.

What this means A late notice is common and carries no penalty by itself. It is worth asking the sponsor why the paperwork lagged.

Form D · Jul 28, 2026 ↗Magnetar Opportunity 5 LP — PartnerFacts page ↗
Sources
Note · Aug 1, 2025 – Aug 3, 2026

Minimum investment changed between filings — Magnetar AI Ventures Fund LP

The Aug 1, 2025 filing lists a minimum of $0; the Aug 3, 2026 Form D/A lists $5,000,000.

What this means A different minimum usually means the offering terms changed. Check which terms apply to you.

Form D/A (earlier) · Aug 1, 2025 ↗Form D/A (later) · Aug 3, 2026 ↗Magnetar AI Ventures Fund LP — PartnerFacts page ↗
Sources
Note · Jul 30, 2015 – Jul 29, 2016

Same name, different state: "Hayley A. Stein" (NY) is a separate record

This page covers filings where the address state is IL. A separate record, "Hayley A. Stein" with address state NY, is listed on 4 filings — most recently by Blackstone Strategic Alliance Fund III L.P. (Jul 29, 2016). The two records do not overlap in time: this page runs Aug 1, 2025 to Sep 15, 2026; the other runs Jul 30, 2015 to Jul 29, 2016.

What this means Could be the same person who moved, or two people with the same name. We keep them apart until a filing ties them together. Check both pages before you decide.

Hayley A. Stein (NY) — PartnerFacts page ↗Form D/A · Jul 29, 2016 ↗Blackstone Strategic Alliance Fund III L.P. — PartnerFacts page ↗Hayley Stein (IL) — this page ↗
Sources
What is compared

What is compared: every Form D and D/A we hold for this subject, side by side — filing dates vs. first-sale dates (the 15-day rule), amendment timing on open offerings (the yearly-amendment expectation), amounts sold, investor counts, offering amounts and minimums across amendments, industry and size bands, addresses, how each person's name and role is written, paid sellers' CRD numbers, and (for groups) where the member companies were formed and sit. Everything is as filed by the issuer; the SEC does not check it. Differences are common and usually have ordinary explanations — we show both values, the dates, and the source so you can ask. As of Oct 24, 2026.

5. Money to insiders

None reported on 21 offerings — no sales commissions, finder's fees or proceeds to insiders

Per-offering detail
Offering (latest filing)Sales commissionsFinder's feesTo insidersPaid to sell itSource
Sep 15, 2026 D/A
Magnetar Opportunity 2025-3 LP
File 021-557525
$0$0$0None listed on this filingEDGAR ↗
Aug 3, 2026 D/A
Magnetar AI Ventures Fund LP
File 021-520384
$0$0$0 (est.)None listed on this filingEDGAR ↗
Jul 28, 2026 D
Magnetar Opportunity 5 LP
File 021-592378
$0$0$0None listed on this filingEDGAR ↗
Jul 15, 2026 D
Magnetar AI Quant Equity Fund LP
File 021-590856
$0$0$0None listed on this filingEDGAR ↗
May 15, 2026 D/A
Magnetar Relative Value Fund Ltd
File 021-481717
$0$0$0None listed on this filingEDGAR ↗
Mar 13, 2026 D/A
Magnetar Investment APPK LP
File 021-540856
$0$0$0None listed on this filingEDGAR ↗
Jan 30, 2026 D/A
Magnetar Waterfront Alternative Credit Fund LLC
File 021-537011
$0$0$0None listed on this filingEDGAR ↗
Jan 14, 2026 D
Magnetar Opportunity 2025-4 LP
File 021-569962
$0$0$0None listed on this filingEDGAR ↗
Jan 14, 2026 D
Magnetar Opportunity 2025-2 LP
File 021-569976
$0$0$0None listed on this filingEDGAR ↗
Dec 23, 2025 D/A
Magnetar AI Opportunity LLC
File 021-519490
$0$0$0None listed on this filingEDGAR ↗
Dec 15, 2025 D/A
Magnetar PRA Fund Ltd
File 021-251276
$0$0$0None listed on this filingEDGAR ↗
Dec 15, 2025 D/A
Magnetar Alpha Star Fund LLC
File 021-449282
$0$0$0None listed on this filingEDGAR ↗
Dec 15, 2025 D/A
Magnetar Capital Fund II LP
File 021-138586
$0$0$0None listed on this filingEDGAR ↗
Dec 15, 2025 D/A
Magnetar Constellation Fund, Ltd
File 021-107257
$0$0$0None listed on this filingEDGAR ↗
Dec 15, 2025 D/A
Magnetar Lake Credit Fund LLC
File 021-371893
$0$0$0None listed on this filingEDGAR ↗
Dec 15, 2025 D/A
Magnetar SC Fund Ltd
File 021-147002
$0$0$0None listed on this filingEDGAR ↗
Dec 15, 2025 D/A
MAGNETAR STRUCTURED CREDIT FUND LP
File 021-119481
$0$0$0None listed on this filingEDGAR ↗
Dec 15, 2025 D/A
Magnetar Systematic Multi-Strategy Fund LLC
File 021-292556
$0$0$0None listed on this filingEDGAR ↗
Dec 15, 2025 D/A
Magnetar Systematic Multi-Strategy Fund Ltd
File 021-325850
$0$0$0None listed on this filingEDGAR ↗
Dec 15, 2025 D/A
Magnetar Xing He Fund LLC
File 021-266747
$0$0$0None listed on this filingEDGAR ↗
Nov 24, 2025 D/A
Mustang Opportunities Fund LP
File 021-420749
$0$0$0None listed on this filingEDGAR ↗

Counts come from Form D Items 12–15 on the filings in our index (latest filing per offering; one offering = one SEC file number; an amendment updates its offering rather than adding one). "To insiders" = gross proceeds used for payments to executive officers, directors or promoters. "—" = not reported on that filing. Amounts marked (est.) were reported as estimates. "Paid to sell it" = sales compensation recipients named on that filing (Item 12), each linked to FINRA BrokerCheck when a CRD number is reported.

Counted across every filing this person is listed on (latest filing per offering, per issuer).

Deals 21

Every issuer that named Hayley Stein on a Form D, newest first. A Form D is the notice a company files after it starts selling a private investment.

MO
Pooled Investment Fund · group: Magnetar

Magnetar Opportunity 2025-3 LP

Evanston, IL · Sep 15, 2025 → Sep 15, 2026 · 2 filings
  • Sep 15, 2026 · D/A · $50,005,000 sold of $125,000,000 · 3 investors · min. $5,000,000 · role: Executive Officer EDGAR ↗
  • Sep 15, 2025 · D · $25,002,500 sold of $125,000,000 · 3 investors · min. $5,000,000 · role: Executive Officer EDGAR ↗

Raised $50M from 3 investors (40% of the $125M target) as of the latest filing. Hayley is listed as executive officer on 2 filings for this deal.

Latest filing on EDGAR ↗
Sources

Every row is a Form D or D/A on which the issuer listed this name as a related person. Amount sold and investors are the maximum reported on any filing for this issuer. "Similar" = offerings in the same industry claiming the same exemption, filed in the last 5 years: Pooled Investment Fund / 506(b) (83,801 filings); ranges are the middle half (25th–75th percentile). Computed by PartnerFacts from SEC EDGAR Form D data as of Oct 23, 2026, 5:45 PM ET. Rows without a range: fewer than 30 comparable filings, or not a Rule 506 offering. No ranking or score.

MA
Pooled Investment Fund · group: Magnetar

Magnetar AI Ventures Fund LP

Evanston, IL · Aug 1, 2025 → Aug 3, 2026 · 2 filings
  • Aug 3, 2026 · D/A · $234,915,000 sold of Indefinite · 55 investors · min. $5,000,000 · role: Executive Officer EDGAR ↗
  • Aug 1, 2025 · D/A · $234,915,000 sold of Indefinite · 54 investors · min. No minimum reported · role: Executive Officer EDGAR ↗

Raised $234.9M from 55 investors as of the latest filing. Hayley is listed as executive officer on 2 filings for this deal.

Latest filing on EDGAR ↗
Sources

Every row is a Form D or D/A on which the issuer listed this name as a related person. Amount sold and investors are the maximum reported on any filing for this issuer. "Similar" = offerings in the same industry claiming the same exemption, filed in the last 5 years: Pooled Investment Fund / 506(b) (83,801 filings); ranges are the middle half (25th–75th percentile). Computed by PartnerFacts from SEC EDGAR Form D data as of Oct 23, 2026, 5:45 PM ET. Rows without a range: fewer than 30 comparable filings, or not a Rule 506 offering. No ranking or score.

MO
Pooled Investment Fund · group: Magnetar

Magnetar Opportunity 5 LP

Evanston, IL · Jul 28, 2026
  • Jul 28, 2026 · D · $15,350,000 sold of Indefinite · 4 investors · min. $5,000,000 · role: Executive Officer EDGAR ↗

Raised $15.3M from 4 investors as of the latest filing. Hayley is listed as executive officer.

Latest filing on EDGAR ↗
Sources

Every row is a Form D or D/A on which the issuer listed this name as a related person. Amount sold and investors are the maximum reported on any filing for this issuer. "Similar" = offerings in the same industry claiming the same exemption, filed in the last 5 years: Pooled Investment Fund / 506(b) (83,801 filings); ranges are the middle half (25th–75th percentile). Computed by PartnerFacts from SEC EDGAR Form D data as of Oct 23, 2026, 5:45 PM ET. Rows without a range: fewer than 30 comparable filings, or not a Rule 506 offering. No ranking or score.

MA
Pooled Investment Fund · group: Magnetar

Magnetar AI Quant Equity Fund LP

Evanston, IL · Jul 15, 2026
  • Jul 15, 2026 · D · $50,055,200 sold of Indefinite · 5 investors · min. $5,000,000 · role: Executive Officer EDGAR ↗

Raised $50.1M from 5 investors as of the latest filing. Hayley is listed as executive officer.

Latest filing on EDGAR ↗
Sources

Every row is a Form D or D/A on which the issuer listed this name as a related person. Amount sold and investors are the maximum reported on any filing for this issuer. "Similar" = offerings in the same industry claiming the same exemption, filed in the last 5 years: Pooled Investment Fund / 506(b) (83,801 filings); ranges are the middle half (25th–75th percentile). Computed by PartnerFacts from SEC EDGAR Form D data as of Oct 23, 2026, 5:45 PM ET. Rows without a range: fewer than 30 comparable filings, or not a Rule 506 offering. No ranking or score.

MR
Pooled Investment Fund

Magnetar Relative Value Fund Ltd

Grand Cayman, Cayman Islands (as filed: E9) · May 15, 2026
  • May 15, 2026 · D/A · $126,690,700 sold of Indefinite · 4 investors · min. $5,000,000 · role: Executive Officer EDGAR ↗

Raised $126.7M from 4 investors as of the latest filing. Hayley is listed as executive officer.

Latest filing on EDGAR ↗
Sources

Every row is a Form D or D/A on which the issuer listed this name as a related person. Amount sold and investors are the maximum reported on any filing for this issuer. "Similar" = offerings in the same industry claiming the same exemption, filed in the last 5 years: Pooled Investment Fund / 506(b) (83,801 filings); ranges are the middle half (25th–75th percentile). Computed by PartnerFacts from SEC EDGAR Form D data as of Oct 23, 2026, 5:45 PM ET. Rows without a range: fewer than 30 comparable filings, or not a Rule 506 offering. No ranking or score.

MI
Pooled Investment Fund · group: Magnetar

Magnetar Investment APPK LP

Evanston, IL · Mar 13, 2026
  • Mar 13, 2026 · D/A · $11,067,500 sold of Indefinite · 44 investors · min. $2,500 · role: Executive Officer EDGAR ↗

Raised $11.1M from 44 investors as of the latest filing. Hayley is listed as executive officer.

Latest filing on EDGAR ↗
Sources

Every row is a Form D or D/A on which the issuer listed this name as a related person. Amount sold and investors are the maximum reported on any filing for this issuer. "Similar" = offerings in the same industry claiming the same exemption, filed in the last 5 years: Pooled Investment Fund / 506(b) (83,801 filings); ranges are the middle half (25th–75th percentile). Computed by PartnerFacts from SEC EDGAR Form D data as of Oct 23, 2026, 5:45 PM ET. Rows without a range: fewer than 30 comparable filings, or not a Rule 506 offering. No ranking or score.

MW
Pooled Investment Fund · group: Magnetar

Magnetar Waterfront Alternative Credit Fund LLC

Evanston, IL · Jan 30, 2026
  • Jan 30, 2026 · D/A · $550,750,000 sold of Indefinite · 8 investors · min. $100,000 · role: Executive Officer EDGAR ↗

Raised $550.8M from 8 investors as of the latest filing. Hayley is listed as executive officer.

Latest filing on EDGAR ↗
Sources

Every row is a Form D or D/A on which the issuer listed this name as a related person. Amount sold and investors are the maximum reported on any filing for this issuer. "Similar" = offerings in the same industry claiming the same exemption, filed in the last 5 years: Pooled Investment Fund / 506(b) (83,801 filings); ranges are the middle half (25th–75th percentile). Computed by PartnerFacts from SEC EDGAR Form D data as of Oct 23, 2026, 5:45 PM ET. Rows without a range: fewer than 30 comparable filings, or not a Rule 506 offering. No ranking or score.

MO
Pooled Investment Fund · group: Magnetar

Magnetar Opportunity 2025-2 LP

Evanston, IL · Jan 14, 2026
  • Jan 14, 2026 · D · $42,445,000 sold of $43,000,000 · 22 investors · min. $5,000,000 · role: Executive Officer EDGAR ↗

Raised $42.4M from 22 investors (99% of the $43M target) as of the latest filing. Hayley is listed as executive officer.

Latest filing on EDGAR ↗
Sources

Every row is a Form D or D/A on which the issuer listed this name as a related person. Amount sold and investors are the maximum reported on any filing for this issuer. "Similar" = offerings in the same industry claiming the same exemption, filed in the last 5 years: Pooled Investment Fund / 506(b) (83,801 filings); ranges are the middle half (25th–75th percentile). Computed by PartnerFacts from SEC EDGAR Form D data as of Oct 23, 2026, 5:45 PM ET. Rows without a range: fewer than 30 comparable filings, or not a Rule 506 offering. No ranking or score.

MO
Pooled Investment Fund · group: Magnetar

Magnetar Opportunity 2025-4 LP

Evanston, IL · Jan 14, 2026
  • Jan 14, 2026 · D · $41,650,000 sold of Indefinite · 35 investors · min. $5,000,000 · role: Executive Officer EDGAR ↗

Raised $41.6M from 35 investors as of the latest filing. Hayley is listed as executive officer.

Latest filing on EDGAR ↗
Sources

Every row is a Form D or D/A on which the issuer listed this name as a related person. Amount sold and investors are the maximum reported on any filing for this issuer. "Similar" = offerings in the same industry claiming the same exemption, filed in the last 5 years: Pooled Investment Fund / 506(b) (83,801 filings); ranges are the middle half (25th–75th percentile). Computed by PartnerFacts from SEC EDGAR Form D data as of Oct 23, 2026, 5:45 PM ET. Rows without a range: fewer than 30 comparable filings, or not a Rule 506 offering. No ranking or score.

MA
Pooled Investment Fund · group: Magnetar

Magnetar AI Opportunity LLC

Evanston, IL · Dec 23, 2025
  • Dec 23, 2025 · D/A · $50,050,000 sold of $100,000,000 · 2 investors · min. $5,000,000 · role: Executive Officer EDGAR ↗

Raised $50M from 2 investors (50% of the $100M target) as of the latest filing. Hayley is listed as executive officer.

Latest filing on EDGAR ↗
Sources

Every row is a Form D or D/A on which the issuer listed this name as a related person. Amount sold and investors are the maximum reported on any filing for this issuer. "Similar" = offerings in the same industry claiming the same exemption, filed in the last 5 years: Pooled Investment Fund / 506(b) (83,801 filings); ranges are the middle half (25th–75th percentile). Computed by PartnerFacts from SEC EDGAR Form D data as of Oct 23, 2026, 5:45 PM ET. Rows without a range: fewer than 30 comparable filings, or not a Rule 506 offering. No ranking or score.

MX
Pooled Investment Fund · group: Magnetar

Magnetar Xing He Fund LLC

Evanston, IL · Dec 15, 2025
  • Dec 15, 2025 · D/A · $564,340,437 sold of Indefinite · 2 investors · min. No minimum reported · role: Executive Officer EDGAR ↗

Raised $564.3M from 2 investors as of the latest filing. Hayley is listed as executive officer.

Latest filing on EDGAR ↗
Sources

Every row is a Form D or D/A on which the issuer listed this name as a related person. Amount sold and investors are the maximum reported on any filing for this issuer. "Similar" = offerings in the same industry claiming the same exemption, filed in the last 5 years: Pooled Investment Fund / 506(b) (83,801 filings); ranges are the middle half (25th–75th percentile). Computed by PartnerFacts from SEC EDGAR Form D data as of Oct 23, 2026, 5:45 PM ET. Rows without a range: fewer than 30 comparable filings, or not a Rule 506 offering. No ranking or score.

MS
Pooled Investment Fund · group: Magnetar

Magnetar Systematic Multi-Strategy Fund Ltd

Grand Cayman, Cayman Islands (as filed: E9) · Dec 15, 2025
  • Dec 15, 2025 · D/A · $116,607,443 sold of Indefinite · 32 investors · min. $5,000,000 · role: Executive Officer EDGAR ↗

Raised $116.6M from 32 investors as of the latest filing. Hayley is listed as executive officer.

Latest filing on EDGAR ↗
Sources

Every row is a Form D or D/A on which the issuer listed this name as a related person. Amount sold and investors are the maximum reported on any filing for this issuer. "Similar" = offerings in the same industry claiming the same exemption, filed in the last 5 years: Pooled Investment Fund / 506(b) (83,801 filings); ranges are the middle half (25th–75th percentile). Computed by PartnerFacts from SEC EDGAR Form D data as of Oct 23, 2026, 5:45 PM ET. Rows without a range: fewer than 30 comparable filings, or not a Rule 506 offering. No ranking or score.

MS
Pooled Investment Fund · group: Magnetar

Magnetar Systematic Multi-Strategy Fund LLC

Evanston, IL · Dec 15, 2025
  • Dec 15, 2025 · D/A · $370,815,200 sold of Indefinite · 66 investors · min. No minimum reported · role: Executive Officer EDGAR ↗

Raised $370.8M from 66 investors as of the latest filing. Hayley is listed as executive officer.

Latest filing on EDGAR ↗
Sources

Every row is a Form D or D/A on which the issuer listed this name as a related person. Amount sold and investors are the maximum reported on any filing for this issuer. "Similar" = offerings in the same industry claiming the same exemption, filed in the last 5 years: Pooled Investment Fund / 506(b) (83,801 filings); ranges are the middle half (25th–75th percentile). Computed by PartnerFacts from SEC EDGAR Form D data as of Oct 23, 2026, 5:45 PM ET. Rows without a range: fewer than 30 comparable filings, or not a Rule 506 offering. No ranking or score.

MS
Pooled Investment Fund · group: Magnetar

MAGNETAR STRUCTURED CREDIT FUND LP

Evanston, IL · Dec 15, 2025
  • Dec 15, 2025 · D/A · $2,106,582,985 sold of Indefinite · 156 investors · min. No minimum reported · role: Executive Officer EDGAR ↗

Raised $2.11B from 156 investors as of the latest filing. Hayley is listed as executive officer.

Latest filing on EDGAR ↗
Sources

Every row is a Form D or D/A on which the issuer listed this name as a related person. Amount sold and investors are the maximum reported on any filing for this issuer. "Similar" = offerings in the same industry claiming the same exemption, filed in the last 5 years: Pooled Investment Fund / 506(b) (83,801 filings); ranges are the middle half (25th–75th percentile). Computed by PartnerFacts from SEC EDGAR Form D data as of Oct 23, 2026, 5:45 PM ET. Rows without a range: fewer than 30 comparable filings, or not a Rule 506 offering. No ranking or score.

MS
Pooled Investment Fund · group: Magnetar

Magnetar SC Fund Ltd

Grand Cayman, Cayman Islands (as filed: E9) · Dec 15, 2025
  • Dec 15, 2025 · D/A · $724,766,420 sold of Indefinite · 21 investors · min. $50,000,000 · role: Executive Officer EDGAR ↗

Raised $724.8M from 21 investors as of the latest filing. Hayley is listed as executive officer.

Latest filing on EDGAR ↗
Sources

Every row is a Form D or D/A on which the issuer listed this name as a related person. Amount sold and investors are the maximum reported on any filing for this issuer. "Similar" = offerings in the same industry claiming the same exemption, filed in the last 5 years: Pooled Investment Fund / 506(b) (83,801 filings); ranges are the middle half (25th–75th percentile). Computed by PartnerFacts from SEC EDGAR Form D data as of Oct 23, 2026, 5:45 PM ET. Rows without a range: fewer than 30 comparable filings, or not a Rule 506 offering. No ranking or score.

MP
Pooled Investment Fund · group: Magnetar

Magnetar PRA Fund Ltd

Grand Cayman, Cayman Islands (as filed: E9) · Nov 20, 2025 → Dec 15, 2025 · 2 filings
  • Dec 15, 2025 · D/A · $3,876,542,164 sold of Indefinite · 196 investors · min. $5,000,000 · role: Executive Officer EDGAR ↗
  • Nov 20, 2025 · D/A · $3,876,542,164 sold of Indefinite · 196 investors · min. $5,000,000 · role: Executive Officer EDGAR ↗

Raised $3.88B from 196 investors as of the latest filing. Hayley is listed as executive officer on 2 filings for this deal.

Latest filing on EDGAR ↗
Sources

Every row is a Form D or D/A on which the issuer listed this name as a related person. Amount sold and investors are the maximum reported on any filing for this issuer. "Similar" = offerings in the same industry claiming the same exemption, filed in the last 5 years: Pooled Investment Fund / 506(b) (83,801 filings); ranges are the middle half (25th–75th percentile). Computed by PartnerFacts from SEC EDGAR Form D data as of Oct 23, 2026, 5:45 PM ET. Rows without a range: fewer than 30 comparable filings, or not a Rule 506 offering. No ranking or score.

ML
Pooled Investment Fund · group: Magnetar

Magnetar Lake Credit Fund LLC

Evanston, IL · Dec 15, 2025
  • Dec 15, 2025 · D/A · $950,250,000 sold of Indefinite · 2 investors · min. $250,000 · role: Executive Officer EDGAR ↗

Raised $950.3M from 2 investors as of the latest filing. Hayley is listed as executive officer.

Latest filing on EDGAR ↗
Sources

Every row is a Form D or D/A on which the issuer listed this name as a related person. Amount sold and investors are the maximum reported on any filing for this issuer. "Similar" = offerings in the same industry claiming the same exemption, filed in the last 5 years: Pooled Investment Fund / 506(b) (83,801 filings); ranges are the middle half (25th–75th percentile). Computed by PartnerFacts from SEC EDGAR Form D data as of Oct 23, 2026, 5:45 PM ET. Rows without a range: fewer than 30 comparable filings, or not a Rule 506 offering. No ranking or score.

MC
Pooled Investment Fund · group: Magnetar

Magnetar Constellation Fund, Ltd

Grand Cayman, Cayman Islands (as filed: E9) · Dec 15, 2025
  • Dec 15, 2025 · D/A · $8,595,604,910 sold of Indefinite · 199 investors · min. No minimum reported · role: Executive Officer EDGAR ↗

Raised $8.6B from 199 investors as of the latest filing. Hayley is listed as executive officer.

Latest filing on EDGAR ↗
Sources

Every row is a Form D or D/A on which the issuer listed this name as a related person. Amount sold and investors are the maximum reported on any filing for this issuer. "Similar" = offerings in the same industry claiming the same exemption, filed in the last 5 years: Pooled Investment Fund / 506(b) (83,801 filings); ranges are the middle half (25th–75th percentile). Computed by PartnerFacts from SEC EDGAR Form D data as of Oct 23, 2026, 5:45 PM ET. Rows without a range: fewer than 30 comparable filings, or not a Rule 506 offering. No ranking or score.

MC
Pooled Investment Fund · group: Magnetar

Magnetar Capital Fund II LP

Evanston, IL · Dec 15, 2025
  • Dec 15, 2025 · D/A · $828,849,163 sold of Indefinite · 114 investors · min. No minimum reported · role: Executive Officer EDGAR ↗

Raised $828.8M from 114 investors as of the latest filing. Hayley is listed as executive officer.

Latest filing on EDGAR ↗
Sources

Every row is a Form D or D/A on which the issuer listed this name as a related person. Amount sold and investors are the maximum reported on any filing for this issuer. "Similar" = offerings in the same industry claiming the same exemption, filed in the last 5 years: Pooled Investment Fund / 506(b) (83,801 filings); ranges are the middle half (25th–75th percentile). Computed by PartnerFacts from SEC EDGAR Form D data as of Oct 23, 2026, 5:45 PM ET. Rows without a range: fewer than 30 comparable filings, or not a Rule 506 offering. No ranking or score.

MA
Pooled Investment Fund · group: Magnetar

Magnetar Alpha Star Fund LLC

Evanston, IL · Dec 15, 2025
  • Dec 15, 2025 · D/A · $707,000,000 sold of Indefinite · 2 investors · min. $450,000,000 · role: Executive Officer EDGAR ↗

Raised $707M from 2 investors as of the latest filing. Hayley is listed as executive officer.

Latest filing on EDGAR ↗
Sources

Every row is a Form D or D/A on which the issuer listed this name as a related person. Amount sold and investors are the maximum reported on any filing for this issuer. "Similar" = offerings in the same industry claiming the same exemption, filed in the last 5 years: Pooled Investment Fund / 506(b) (83,801 filings); ranges are the middle half (25th–75th percentile). Computed by PartnerFacts from SEC EDGAR Form D data as of Oct 23, 2026, 5:45 PM ET. Rows without a range: fewer than 30 comparable filings, or not a Rule 506 offering. No ranking or score.

MO
Pooled Investment Fund · group: Magnetar

Mustang Opportunities Fund LP

Evanston, IL · Nov 24, 2025
  • Nov 24, 2025 · D/A · $802,928,796 sold of Indefinite · 4 investors · min. No minimum reported · role: Executive Officer EDGAR ↗

Raised $802.9M from 5 investors as of the latest filing. Hayley is listed as executive officer.

Latest filing on EDGAR ↗
Sources

Every row is a Form D or D/A on which the issuer listed this name as a related person. Amount sold and investors are the maximum reported on any filing for this issuer. "Similar" = offerings in the same industry claiming the same exemption, filed in the last 5 years: Pooled Investment Fund / 506(b) (83,801 filings); ranges are the middle half (25th–75th percentile). Computed by PartnerFacts from SEC EDGAR Form D data as of Oct 23, 2026, 5:45 PM ET. Rows without a range: fewer than 30 comparable filings, or not a Rule 506 offering. No ranking or score.

Other pages with the same name (1)

Separate person records under the same name, not combined with this page. Each line says whether it shares an issuer with this record.

  • Hayley A. Stein — NY, 2 issuers, Jul 30, 2015 → Jul 29, 2016 · no shared issuer

People around Hayley 17

Officers, directors, promoters and management entities named on the same filings, as of Oct 23, 2026, 5:45 PM ET.

MF
Management entity

Magnetar Financial LLC

Promoter, Executive Officer · 24 shared filings (21 issuers) · also on 69 other issuers

Magnetar Financial LLC is on 90 issuers in total — a repeat sponsor. Their page lists every one.

MA
Management entity

Magnetar AI Ventures GP LLC

Promoter · 2 shared filings (1 issuer)

Listed on the same filings as Hayley Stein. Their page shows their other deals.

MA
Management entity

Magnetar Alpha Star MM LLC

Promoter · 1 shared filing (1 issuer)

Listed on the same filings as Hayley Stein. Their page shows their other deals.

MO
Management entity

Mustang Opportunities GP LLC

Promoter · 1 shared filing (1 issuer)

Listed on the same filings as Hayley Stein. Their page shows their other deals.

MI
Management entity

Magnetar Investment APPK GP LLC

Promoter · 1 shared filing (1 issuer)

Listed on the same filings as Hayley Stein. Their page shows their other deals.

MO
Management entity

Magnetar Opportunity 5 GP LLC

Promoter · 1 shared filing (1 issuer)

Listed on the same filings as Hayley Stein. Their page shows their other deals.

MA
Management entity

Magnetar AI Quant Equity GP LLC

Promoter · 1 shared filing (1 issuer)

Listed on the same filings as Hayley Stein. Their page shows their other deals.

DS
No photo found yet (own website and image search run after this page is viewed)
Person

David Snyderman

Executive Officer · 24 shared filings (21 issuers) · also on 64 other issuers

David Snyderman is on 85 issuers in total — a repeat sponsor. Their page lists every one.

RL
No photo found yet (own website and image search run after this page is viewed)
Person

Ross Laser

Executive Officer · 24 shared filings (21 issuers) · also on 73 other issuers

Ross Laser is on 94 issuers in total — a repeat sponsor. Their page lists every one.

AM
No photo found yet (own website and image search run after this page is viewed)
Person

Alan Milgate

Director · 6 shared filings (5 issuers) · also on 32 other issuers

Alan Milgate is on 37 issuers in total — a repeat sponsor. Their page lists every one.

CB
No photo found yet (own website and image search run after this page is viewed)
Person

Christopher Bodden

Director · 6 shared filings (5 issuers) · also on 11 other issuers

Christopher Bodden is on 16 issuers in total — a repeat sponsor. Their page lists every one.

LG
No photo found yet (own website and image search run after this page is viewed)
Person

Leanne Golding

Director · 5 shared filings (4 issuers) · also on 83 other issuers

Leanne Golding is on 87 issuers in total — a repeat sponsor. Their page lists every one.

PD
No photo found yet (own website and image search run after this page is viewed)
Person

Peter Duncan

Director · 1 shared filing (1 issuer)

Listed on the same filings as Hayley Stein. Their page shows their other deals.

The team behind the deals

M
Sponsor group

Magnetar

84 issuers · 401 filings · $42.46B reported sold · 2009–2026

One team, 84 deal companies. Hayley Stein is listed on 20 of them.

Sources

Issuers are grouped when their Form D filings share related persons, a management entity or a business address (automatic match from the filings). "Listed" marks the issuers that name Hayley Stein.

Same business address

51 other issuers file from the same address (first 50 shown)

A shared address can mean the same team, a shared office building or a registered agent. It is a lead, not a conclusion.

Registrations and other filings

Business registration (state registry / Secretary of State)

Individuals are not matched to business registrations — registries list companies, and a name alone is not enough to tie a person to one. Officers and managers appear by name inside each matched company's record on the issuer pages. Registries searched: AL (Alabama Secretary of State — Business Entity Records (arc-sos.state.al.us), searched by issuer name, data as of Oct 24, 2026); CO (Colorado Secretary of State — Business Entities in Colorado (data.colorado.gov), data as of Oct 23, 2026); CT (Connecticut Secretary of the State — Business Registry (data.ct.gov), data as of Oct 24, 2026); FL (Florida Department of State, Division of Corporations — quarterly corporate data file (Sunbiz), data as of Oct 7, 2026); KY (Kentucky Secretary of State — Business Entity Search (sosbes.sos.ky.gov), searched by issuer name, data as of Oct 24, 2026); NY (New York Department of State — Corporations and Other Entities (data.ny.gov: All Filings + Active Corporations), data as of Oct 20, 2026); OR (Oregon Secretary of State — Active Businesses, All (data.oregon.gov), data as of Oct 20, 2026); PA (Pennsylvania Department of State — Registered Businesses, Current (data.pa.gov), data as of Oct 6, 2026); TX (Texas Comptroller — Active Franchise Taxpayers incl. Secretary of State file data (data.texas.gov), data as of Oct 24, 2026). Registries of other states have not been searched: many publish no bulk file and require a CAPTCHA or bot challenge on their search page, which we do not bypass (Delaware, for example, offers no public bulk file).

Adviser registration (Form ADV)

A person is never an adviser firm. 21 of the 21 issuers this person is listed on match a Form ADV adviser (searched 24,962 advisers as of Oct 2, 2026): Magnetar Opportunity 2025-3 LP, Magnetar AI Ventures Fund LP, Magnetar Opportunity 5 LP, Magnetar AI Quant Equity Fund LP, Magnetar Relative Value Fund Ltd, Magnetar Investment APPK LP, Magnetar Waterfront Alternative Credit Fund LLC, Magnetar Opportunity 2025-2 LP, Magnetar Opportunity 2025-4 LP, Magnetar AI Opportunity LLC, Magnetar Xing He Fund LLC, Magnetar Systematic Multi-Strategy Fund Ltd, Magnetar Systematic Multi-Strategy Fund LLC, MAGNETAR STRUCTURED CREDIT FUND LP, Magnetar SC Fund Ltd, Magnetar PRA Fund Ltd, Magnetar Lake Credit Fund LLC, Magnetar Constellation Fund, Ltd, Magnetar Capital Fund II LP, Magnetar Alpha Star Fund LLC, Mustang Opportunities Fund LP.

Other offering types (Regulation A and Regulation Crowdfunding)

Searched SEC Regulation A Data Sets (Forms 1-A, 1-K, 1-Z; 2015 Q2 → 2026 Q3); SEC Crowdfunding Offerings Data Sets (Form C family; 2016 Q2 → 2026 Q3); EDGAR form index for 2026 Q3 → 2026 Q4 (51,358 records as of Oct 23, 2026, 8:41 PM ET) — nothing matched this name.

Property records none — individuals are not matched

Property records are matched to companies only, never to individuals, so none are matched to Hayley Stein by design. Searched property records in Hillsborough County FL (Clerk recorded-document index Oct 14, 2026 to Oct 15, 2026 + FL DOR 2026 ownership roll), Miami-Dade County FL (FL DOR 2026 ownership roll), Harris County TX (HCAD 2026 ownership roll), Dallas County TX (DCAD 2026 ownership roll), New York City ACRIS documents and PLUTO ownership rows already retrieved for other issuers, Cook County IL sale and ownership rows already retrieved for other issuers (814,874 records as of Oct 23, 2026, 8:59 PM ET) for the 21 issuers this person is listed on — nothing matched.

Public profiles and social

Websites and social links of the issuers Hayley Stein is listed on: none on file. No website or social profile named in Magnetar Constellation Fund, Ltd's SEC filings (Form C, Reg A, Form ADV; checked Oct 24, 2026). Web search for this name: #50,215 of 374,652 in line (1,386 issuers searched so far). One-tap searches: Look further ↓

Look further

One-tap searches on sites we do not index ourselves, with the name pre-filled (Grand Cayman, E9). Each opens in a new tab; what you find there is not verified by PartnerFacts.

Social and web

LinkedIn people search ↗Instagram ↗X (Twitter) ↗Facebook ↗YouTube ↗Google ↗Google Images ↗Google News ↗Meta Ad Library ↗

Courts

CourtListener / RECAP (federal) ↗PACER case locator (federal, login) ↗Cook County Clerk of Court case search ↗

Securities regulators

SEC EDGAR full-text search ↗SEC action look-up ↗FINRA BrokerCheck ↗SEC IAPD adviser search ↗

Business registries

Illinois Secretary of State business search ↗OpenCorporates ↗

Change history

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