Magnetar Financial LLC is an SEC-registered investment adviser based in Evanston, IL that reports managing 58 hedge funds on Form ADV. It reports $32.0 billion in regulatory assets under management. Its private funds, of all types, hold $30.7 billion in gross assets. Its disclosed U.S. stock holdings returned an estimated +20.4% 2026 YTD through Jun 30 (S&P 500: +9.5%), based on 13F filings. Over a longer period they returned an estimated +86.6% from Q3 2024 to Q2 2026, compared with +37.2% for the S&P 500, based on 13F filings.
- Regulatory assets under management
- $32.0 billionForm ADV Item 5.F
- Gross assets of private funds
- $30.7 billionAll private fund types, Form ADV
- Hedge funds managed
- 5858 private funds in total
- Employees
- 209Form ADV Item 5.A
- Registration
- SEC-registered adviserCRD 136045
- Latest Form ADV
- 08/05/2026Disciplinary disclosures: none reported
Estimated 13F portfolio performance
Est. 2026 YTD+20.4%Through Q2 2026 · S&P 500 +9.5%
Est. 2-year return+86.6%Q3 2024 – Q2 2026
S&P 500+37.2%Same quarters, price only
13F holdings$10.5 billion1,120 positions, 2026-06-30
| Quarter | Est. 13F return | S&P 500 |
|---|---|---|
| Q2 2026 | +16.9% | +14.8% |
| Q1 2026 | +3.0% | -4.6% |
| Q4 2025 | -33.2% | +2.4% |
| Q3 2025 | -12.6% | +7.8% |
| Q2 2025 | +152.4% | +10.4% |
| Q1 2025 | +4.1% | -4.5% |
| Q4 2024 | -4.6% | +2.1% |
| Q3 2024 | +6.0% | +5.4% |
Estimate of the firm's disclosed long U.S. stock portfolio from its quarterly 13F filings, holding each quarter-end portfolio to the next quarter-end at prices implied by all 13F filers. It is a price return before dividends and fees, ignores shorts, options, bonds, cash and trading within the quarter, and is not the return of any fund. Disclosures
Largest disclosed holdings
- Coreweave Class A$5.2 billion
- Hewlett Packard Enterprise C$89.0 million
- Webster Finl Corp$88.4 million
- Kenvue Inc.$88.2 million
- Chart Inds Inc Com Pa$87.4 million
- Norfolk Southn Corp$86.6 million
- Dominion Res$83.3 million
- Txnm Energy Inc$82.2 million
- Penumbra Inc$80.8 million
- Teck Resources LTD$79.1 million
As of 2026-06-30, from 13F filing by Magnetar Financial LLC.
Hedge funds filing Form D (15)
Fund
First sale
Raised
Investors
Minimum
YTD performance
Magnetar Constellation Fund, Ltd
Grand Cayman, Cayman IslandsOffshore
First saleMar 2007
Raised$8.6B
Investors199
MinimumNone set
YTD performance+20.4%13F est. YTD · thru Q2 2026
Magnetar PRA Fund Ltd
Grand Cayman, Cayman IslandsOffshore
First saleNov 2015
Raised$3.9B
Investors196
Minimum$5.0M
YTD performance+20.4%13F est. YTD · thru Q2 2026
Magnetar Structured Credit Fund LP
Evanston, IL
First saleMar 2008
Raised$2.1B
Investors156
MinimumNone set
YTD performance+20.4%13F est. YTD · thru Q2 2026
Magnetar Capital Fund II LP
Evanston, IL
First saleJan 2010
Raised$829M
Investors114
MinimumNone set
YTD performance+20.4%13F est. YTD · thru Q2 2026
Magnetar SC Fund Ltd
Grand Cayman, Cayman IslandsOffshore
First saleJul 2010
Raised$725M
Investors21
Minimum$50.0M
YTD performance+20.4%13F est. YTD · thru Q2 2026
Magnetar Alpha Star Fund LLC
Evanston, IL
First saleMay 2022
Raised$707M
Investors2
Minimum$450M
YTD performance+20.4%13F est. YTD · thru Q2 2026
Magnetar Xing He Fund LLC
Evanston, IL
First saleJul 2016
Raised$564M
Investors2
MinimumNone set
YTD performance+20.4%13F est. YTD · thru Q2 2026
Magnetar Healthcare Fund Ltd
Grand Cayman, Cayman IslandsOffshore
First saleJun 2021
Raised$535M
Investors17
MinimumNone set
YTD performance+20.4%13F est. YTD · thru Q2 2026
Magnetar Systematic Multi-Strategy Fund LLC
Evanston, IL
First saleAug 2017
Raised$371M
Investors66
MinimumNone set
YTD performance+20.4%13F est. YTD · thru Q2 2026
Magnetar Relative Value Fund Ltd
Grand Cayman, Cayman IslandsOffshore
First saleMay 2023
Raised$127M
Investors4
Minimum$5.0M
YTD performance+20.4%13F est. YTD · thru Q2 2026
Magnetar Healthcare Fund LLC
Evanston, IL
First saleNov 2021
Raised$119M
Investors24
MinimumNone set
YTD performance+20.4%13F est. YTD · thru Q2 2026
Magnetar Systematic Multi-Strategy Fund Ltd
Grand Cayman, Cayman IslandsOffshore
First saleNov 2018
Raised$117M
Investors32
Minimum$5.0M
YTD performance+20.4%13F est. YTD · thru Q2 2026
Magnetar AI Quant Equity Fund LP
Evanston, IL
First saleJul 2026
Raised$50.1M
Investors5
Minimum$5.0M
YTD performance+20.4%13F est. YTD · thru Q2 2026
Magnetar Opportunity 2025-3 LP
Evanston, IL
First saleSep 2025
Raised$50.0M
Investors3
Minimum$5.0M
YTD performance+20.4%13F est. YTD · thru Q2 2026
Magnetar Special Situations Fund LP
Evanston, IL
First sale—
Raised$0
Investors0
Minimum$5.0M
YTD performance+20.4%13F est. YTD · thru Q2 2026
Matched to this firm by the fund names and related persons in each Form D. The list may be incomplete.
Private equity funds filing Form D (6)
Fund
First sale
Raised
Investors
Minimum
Offering
Mustang Opportunities Fund LP
Evanston, IL
First saleNov 2021
Raised$803M
Investors4
MinimumNone set
Offering506(b)
Magnetar Waterfront Alternative Credit Fund LLC
Evanston, IL
First saleJan 2025
Raised$551M
Investors8
Minimum$100K
Offering506(b)
Magnetar Opportunity 2025-2 LP
Evanston, ILEmerging
First saleOct 2025
Raised$42.4M
Investors22
Minimum$5.0M
Offering506(b)
Magnetar Opportunity 2025-4 LP
Evanston, ILEmerging
First saleDec 2025
Raised$41.6M
Investors35
Minimum$5.0M
Offering506(b)
Magnetar Opportunity 5 LP
Evanston, ILEmerging
First saleJul 2026
Raised$15.3M
Investors4
Minimum$5.0M
Offering506(b)
Magnetar Investment APPK LP
Evanston, ILEmerging
First saleFeb 2025
Raised$11.1M
Investors44
Minimum$2K
Offering506(b)
Matched to this firm by the fund names and related persons in each Form D. The list may be incomplete.
Venture capital funds filing Form D (1)
Fund
First sale
Raised
Investors
Minimum
Offering
Magnetar AI Ventures Fund LP
Evanston, IL
First saleAug 2024
Raised$235M
Investors55
Minimum$5.0M
Offering506(b)
Matched to this firm by the fund names and related persons in each Form D. The list may be incomplete.
Private funds reported on Form ADV (37)
Fund
Gross assets
Minimum
Owners
Adviser
CNST
Cayman IslandsHedge fund
Gross assets$2.3B
MinimumNone set
Owners1
AdviserMagnetar Financial LLC
MPMD
Cayman IslandsHedge fund
Gross assets$1.5B
MinimumNone set
Owners39
AdviserMagnetar Financial LLC
MXMF
Cayman IslandsHedge fund
Gross assets$1.5B
MinimumNone set
Owners1
AdviserMagnetar Financial LLC
MLCC
Delaware, United StatesHedge fund
Gross assets$1.4B
MinimumNone set
Owners2
AdviserMagnetar Financial LLC
Marm
Cayman IslandsHedge fund
Gross assets$1.3B
MinimumNone set
Owners60
AdviserMagnetar Financial LLC
MSCF
Delaware, United StatesHedge fund
Gross assets$1.3B
Minimum$100K
Owners89
AdviserMagnetar Financial LLC
MLHP
Delaware, United StatesHedge fund
Gross assets$721M
MinimumNone set
Owners3
AdviserMagnetar Financial LLC
Cns2
Cayman IslandsHedge fund
Gross assets$713M
MinimumNone set
Owners2
AdviserMagnetar Financial LLC
Pacf
Delaware, United StatesHedge fund
Gross assets$711M
MinimumNone set
Owners4
AdviserMagnetar Financial LLC
SCFD
Cayman IslandsHedge fund
Gross assets$693M
Minimum$100K
Owners5
AdviserMagnetar Financial LLC
Mufp
Delaware, United StatesHedge fund
Gross assets$692M
MinimumNone set
Owners4
AdviserMagnetar Financial LLC
Masf
Delaware, United StatesHedge fund
Gross assets$616M
Minimum$4.5M
Owners2
AdviserMagnetar Financial LLC
MHMF
Cayman IslandsHedge fund
Gross assets$460M
MinimumNone set
Owners2
AdviserMagnetar Financial LLC
Cwoc
Delaware, United StatesHedge fund
Gross assets$439M
Minimum$5.0M
Owners20
AdviserMagnetar Financial LLC
Lsop
Delaware, United StatesHedge fund
Gross assets$322M
MinimumNone set
Owners2
AdviserMagnetar Financial LLC
Cwo2
Delaware, United StatesHedge fund
Gross assets$253M
Minimum$5.0M
Owners100
AdviserMagnetar Financial LLC
Maiv
Delaware, United StatesHedge fund
Gross assets$235M
Minimum$5.0M
Owners55
AdviserMagnetar Financial LLC
Cwc2
Delaware, United StatesHedge fund
Gross assets$200M
Minimum$5.0M
Owners9
AdviserMagnetar Financial LLC
Pact
Delaware, United StatesHedge fund
Gross assets$181M
MinimumNone set
Owners4
AdviserMagnetar Financial LLC
MRVM
Cayman IslandsHedge fund
Gross assets$161M
MinimumNone set
Owners3
AdviserMagnetar Financial LLC
Cns5
Cayman IslandsHedge fund
Gross assets$149M
MinimumNone set
Owners3
AdviserMagnetar Financial LLC
Meom
Cayman IslandsHedge fund
Gross assets$106M
MinimumNone set
Owners15
AdviserMagnetar Financial LLC
MCMF
Cayman IslandsHedge fund
Gross assets$71.6M
MinimumNone set
Owners195
AdviserMagnetar Financial LLC
SSMF
Cayman IslandsHedge fund
Gross assets$50.2M
MinimumNone set
Owners1
AdviserMagnetar Financial LLC
Somf
Cayman IslandsHedge fund
Gross assets$26.1M
MinimumNone set
Owners2
AdviserMagnetar Financial LLC
Cns4
Cayman IslandsHedge fund
Gross assets$22.2M
MinimumNone set
Owners3
AdviserMagnetar Financial LLC
Mapc
Delaware, United StatesHedge fund
Gross assets$18.7M
Minimum$5.0M
Owners2
AdviserMagnetar Financial LLC
Ast7-C
Delaware, United StatesHedge fund
Gross assets$17.5M
MinimumNone set
Owners7
AdviserMagnetar Financial LLC
Ap18
Delaware, United StatesHedge fund
Gross assets$7.2M
MinimumNone set
Owners14
AdviserMagnetar Financial LLC
A2s1
Delaware, United StatesHedge fund
Gross assets$5.5M
MinimumNone set
Owners25
AdviserMagnetar Financial LLC
Ast5
Delaware, United StatesHedge fund
Gross assets$3.2M
MinimumNone set
Owners25
AdviserMagnetar Financial LLC
Mg2c
Delaware, United StatesHedge fund
Gross assets$2.9M
Minimum$250K
Owners6
AdviserMagnetar Financial LLC
Ap15
Delaware, United StatesHedge fund
Gross assets$856K
MinimumNone set
Owners23
AdviserMagnetar Financial LLC
MDFM
Cayman IslandsHedge fund
Gross assets$756K
MinimumNone set
Owners21
AdviserMagnetar Financial LLC
Maod
Cayman IslandsHedge fund
Gross assets$436K
Minimum$5.0M
Owners3
AdviserMagnetar Financial LLC
Ap11
Delaware, United StatesHedge fund
Gross assets$373K
MinimumNone set
Owners9
AdviserMagnetar Financial LLC
Ast1
Delaware, United StatesHedge fund
Gross assets$282K
MinimumNone set
Owners3
AdviserMagnetar Financial LLC
As reported in the adviser's Form ADV filed Nov 27, 2024. Funds also listed from Form D are shown above.
Fund vehicles: feeder funds and single-deal vehicles (25)
Fund
Gross assets
Minimum
Owners
Adviser
Cn1d
Cayman IslandsHedge fund
Gross assets$1.7B
Minimum$100K
Owners47
AdviserMagnetar Financial LLC
MXHC
Delaware, United StatesHedge fund
Gross assets$1.1B
Minimum$100K
Owners2
AdviserMagnetar Financial LLC
MPFD
Cayman IslandsHedge fund
Gross assets$718M
Minimum$100K
Owners30
AdviserMagnetar Financial LLC
Cn2a
Cayman IslandsHedge fund
Gross assets$544M
Minimum$100K
Owners1
AdviserMagnetar Financial LLC
Mhm2
Cayman IslandsHedge fund
Gross assets$486M
MinimumNone set
Owners2
AdviserMagnetar Financial LLC
MHMD
Cayman IslandsHedge fund
Gross assets$426M
Minimum$5.0M
Owners16
AdviserMagnetar Financial LLC
Marc
Delaware, United StatesHedge fund
Gross assets$277M
Minimum$5.0M
Owners54
AdviserMagnetar Financial LLC
Cn5c
Delaware, United StatesHedge fund
Gross assets$155M
Minimum$5.0M
Owners13
AdviserMagnetar Financial LLC
MHMC
Delaware, United StatesHedge fund
Gross assets$142M
Minimum$5.0M
Owners20
AdviserMagnetar Financial LLC
MPFC
Delaware, United StatesHedge fund
Gross assets$140M
Minimum$100K
Owners9
AdviserMagnetar Financial LLC
Masc
Delaware, United StatesHedge fund
Gross assets$102M
Minimum$500K
Owners2
AdviserMagnetar Financial LLC
Cn5d
Delaware, United StatesHedge fund
Gross assets$88.1M
Minimum$5.0M
Owners20
AdviserMagnetar Financial LLC
Mard
Cayman IslandsHedge fund
Gross assets$79.9M
Minimum$5.0M
Owners5
AdviserMagnetar Financial LLC
MRVD
Cayman IslandsHedge fund
Gross assets$65.8M
Minimum$5.0M
Owners3
AdviserMagnetar Financial LLC
SSFC
Delaware, United StatesHedge fund
Gross assets$51.2M
Minimum$5.0M
Owners9
AdviserMagnetar Financial LLC
Mlp2
Delaware, United StatesHedge fund
Gross assets$49.6M
Minimum$5.0M
Owners15
AdviserMagnetar Financial LLC
Cn2c
Delaware, United StatesHedge fund
Gross assets$41.9M
MinimumNone set
Owners15
AdviserMagnetar Financial LLC
Meoc
Delaware, United StatesHedge fund
Gross assets$26.2M
Minimum$100K
Owners15
AdviserMagnetar Financial LLC
Sofd
Cayman IslandsHedge fund
Gross assets$23.1M
Minimum$100K
Owners15
AdviserMagnetar Financial LLC
Cn4c
Delaware, United StatesHedge fund
Gross assets$16.6M
Minimum$50.0M
Owners11
AdviserMagnetar Financial LLC
MLTD
Cayman IslandsHedge fund
Gross assets$15.7M
Minimum$100K
Owners105
AdviserMagnetar Financial LLC
Cn4d
Cayman IslandsHedge fund
Gross assets$11.6M
Minimum$50.0M
Owners12
AdviserMagnetar Financial LLC
MCLP
Delaware, United StatesHedge fund
Gross assets$2.9M
Minimum$100K
Owners75
AdviserMagnetar Financial LLC
Sofp
Delaware, United StatesHedge fund
Gross assets$2.6M
Minimum$500K
Owners3
AdviserMagnetar Financial LLC
MDFC
Delaware, United StatesHedge fund
Gross assets$744K
Minimum$5.0M
Owners21
AdviserMagnetar Financial LLC
Feeder funds invest through a master fund; single-deal vehicles (SPVs, co-investments, series) hold one investment.
From SEC filings. Firm data comes from the SEC's Form ADV data as of Oct 2, 2026; performance estimates come from Form 13F. AltMountain has not verified this information, and it is not an offer, solicitation or recommendation. Full disclosures