Magnetar Financial LLC holds a focused book of 1133 stocks worth $10.9B as of Q2 2026 (disclosed Aug 14, 2026, a ~45-day 13F lag). This quarter they opened Dominion Energy Inc and trimmed Coreweave Inc-CL A. Their largest long position is Coreweave Inc-CL A at 47% of the equity book. They also disclosed $17.3M in put options (a bearish bet), shown separately below and excluded from the equity book.
Top-heavy: focused book
Share of the disclosed book in its largest positions. A higher top-5 share means a more concentrated, higher-conviction portfolio.
83% mapped to company sectors
Direct operating-company sectors from our SIC-based security master. ETF/fund and unclassified holdings stay visible separately; this is not ETF look-through exposure.
Estimated $ traded · quarter-end prices, no cost basis
Other tracked managers holding the same core names as Magnetar Financial LLC
| Manager / fund | Shared names | Their $ in those |
|---|---|---|
| MORGAN STANLEY | 61 / 80 | $5.7B |
| Verition Fund Management LLC | 59 / 80 | $1.4B |
| UBS Group AG | 55 / 80 | $4.9B |
| GOLDMAN SACHS GROUP INC | 53 / 80 | $6.2B |
| BNP PARIBAS FINANCIAL MARKETS | 53 / 80 | $790.5M |
| MILLENNIUM MANAGEMENT LLC | 52 / 80 | $6.3B |
| JPMORGAN CHASE & CO | 52 / 80 | $4.0B |
| D. E. Shaw & Co., Inc. | 51 / 80 | $3.5B |
Ranked by how many of Magnetar Financial LLC's top 80 disclosed names each fund also holds: a cross-fund conviction signal from the latest 13F of every tracked manager.
Bars show each stock's share of the portfolio. Click a row for its position history.
| # | Security | Value | Shares | % Port | Last move | History |
|---|---|---|---|---|---|---|
| 1 | Coreweave Inc COM CL A | $5.2B | 52.06M | 47.3% | ▼−24% Reduced · −16.5M sh | |
| 2 | Hewlett Packard Enterprise C 7.625 MAND CONV | $89.0M | 760.0K | 0.8% | ▼−18% Reduced · −165K sh | |
| 3 | Webster Finl Corp COM | $88.4M | 1.16M | 0.8% | ▲+1.8% Added · +20K sh | |
| 4 | Kenvue Inc COM | $88.2M | 4.62M | 0.8% | ▲+0.2% Added · +10K sh | |
| 5 | Chart Inds Inc COM | $87.4M | 418.3K | 0.8% | ▼−0.5% Reduced · −2K sh | |
| 6 | Norfolk Southn Corp COM | $86.6M | 275.2K | 0.8% | ▲~0% Added · +54 sh | |
| 7 | Jd.com Inc NOTE 0.250% 6/0 | $85.1M | 86.63M | 0.8% | ▲+16% Added · +11.9M sh | |
| 8 | Dominion Energy Inc COM | $83.3M | 1.22M | 0.8% | ▲New New position | |
| 9 | TXNM Energy Inc COM | $82.2M | 1.45M | 0.8% | ▼−1.8% Reduced · −27K sh | |
| 10 | Penumbra Inc COM | $80.8M | 255.8K | 0.7% | ▲+1.8% Added · +4K sh | |
| 11 | Teck Resources Ltd CL B | $79.1M | 1.33M | 0.7% | ▼−11% Reduced · −168K sh | |
| 12 | Microchip Technology Inc. DEP SHS REPSTG | $75.6M | 982.2K | 0.7% | ▼−4.2% Reduced · −43K sh | |
| 13 | Alphabet Inc DEP SHS RP1/20 A | $75.5M | 1.50M | 0.7% | ▲New New position | |
| 14 | Alibaba Group Hldg Ltd NOTE 0.500% 6/0 | $74.5M | 63.18M | 0.7% | ▲+93% Added · +30.4M sh | |
| 15 | Warner Bros Discovery Inc COM SER A | $73.3M | 2.75M | 0.7% | ▼−8.9% Reduced · −269K sh | |
| 16 | Roku Inc COM CL A | $70.0M | 507.1K | 0.6% | ▲139× Added · +503K sh | |
| 17 | Digitalbridge Group Inc CL A NEW | $65.0M | 4.12M | 0.6% | ▼−2.3% Reduced · −97K sh | |
| 18 | Oracle Corp 6.5 DEP CUM SR D | $64.1M | 1.43M | 0.6% | ▲+119% Added · +775K sh | |
| 19 | Firstenergy Corp NOTE 3.625% 1/1 | $61.7M | 56.50M | 0.6% | ▲New New position | |
| 20 | Trip Com Group Ltd NOTE 0.750% 6/1 | $57.7M | 58.45M | 0.5% | ▼−16% Reduced · −11.0M sh | |
| 21 | Gamestop Corp NOTE 4/0 | $56.8M | 55.57M | 0.5% | ▲New New position | |
| 22 | National Storage Affiliates COM SHS BEN IN | $55.0M | 1.24M | 0.5% | ▲+0.7% Added · +8K sh | |
| 23 | Silicon Laboratories Inc COM | $54.9M | 251.2K | 0.5% | ▲+2.2% Added · +5K sh | |
| 24 | Bio-Techne Corp COM | $53.8M | 761.9K | 0.5% | ▲New New position | |
| 25 | Apogee Therapeutics Inc COM | $53.0M | 399.1K | 0.5% | ▲New New position | |
| 26 | Caesars Entertainment Inc Ne COM | $52.7M | 1.75M | 0.5% | ▲New New position | |
| 27 | Liveramp Hldgs Inc COM | $51.9M | 1.38M | 0.5% | ▲New New position | |
| 28 | Qorvo Inc COM | $51.1M | 548.1K | 0.5% | ▲+1.3% Added · +7K sh | |
| 29 | Payoneer Global Inc COM | $50.6M | 7.11M | 0.5% | ▲540× Added · +7.1M sh | |
| 30 | Allied Gold Corp COM NEW | $50.1M | 2.11M | 0.5% | ▼−16% Reduced · −410K sh | |
| 31 | Bruker Corp 6.375 PREF SER A | $48.6M | 109.0K | 0.4% | ▲New New position | |
| 32 | Essential Utils Inc COM | $48.2M | 1.26M | 0.4% | ▲+4.5% Added · +55K sh | |
| 33 | Novanta Inc UNIT 11/01/2028 | $47.8M | 700.6K | 0.4% | ▲+40% Added · +201K sh | |
| 34 | Alliant Energy Corp NOTE 3.250% 5/3 | $47.6M | 43.48M | 0.4% | ▲New New position | |
| 35 | Unifirst Corp Mass COM | $46.2M | 174.6K | 0.4% | ▲+1.6% Added · +3K sh | |
| 36 | Arcosa Inc COM | $46.0M | 316.3K | 0.4% | ▲New New position | |
| 37 | Skywater Technology Inc COM | $41.2M | 1.18M | 0.4% | ▲+0.8% Added · +9K sh | |
| 38 | Organon & Co COMMON STOCK | $38.0M | 2.81M | 0.3% | ▲New New position | |
| 39 | PG&E Corp NOTE 4.250%12/0 | $37.6M | 36.78M | 0.3% | ▼−38% Reduced · −22.2M sh | |
| 40 | Valaris Ltd CL A | $35.9M | 494.0K | 0.3% | ▲+1.4% Added · +7K sh | |
| 41 | Churchill Cap Corp XI CL A ORD SHS | $33.5M | 1.92M | 0.3% | ▼−29% Reduced · −781K sh | |
| 42 | Stellar Bancorp Inc COM | $31.9M | 812.2K | 0.3% | —Held | |
| 43 | Super Micro Computer Inc 7 DEP CM SR A WI | $29.2M | 570.7K | 0.3% | ▲New New position | |
| 44 | International Money Express COM | $29.0M | 2.01M | 0.3% | ▲+4.3% Added · +84K sh | |
| 45 | Churchill Cap Corp XII CL A ORD SHS | $28.8M | 2.70M | 0.3% | ▲New New position | |
| 46 | Drugs Made In Amer Acq II Co USD ORD SHS | $27.2M | 2.70M | 0.2% | —Held | |
| 47 | Leggett & Platt Inc COM | $26.5M | 2.26M | 0.2% | ▲New New position | |
| 48 | NextEra Energy Inc UNIT 02/15/2029 | $26.3M | 550.0K | 0.2% | ▲+22% Added · +100K sh | |
| 49 | Axalta Coating Sys Ltd COM | $25.6M | 747.2K | 0.2% | ▲+0.8% Added · +6K sh | |
| 50 | Eqv Ventures Ac Corp. II ORD SHS CL A | $25.4M | 2.50M | 0.2% | —Held |
The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.
This fund page is the Follow view. The Build view lets your agent pull holdings, quarter changes, overlap, and source filings through API or MCP.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/funds/1352851/holdings"
Use Arkolith to show Magnetar Financial LLC's latest holdings, largest changes, and filing provenance.
Put / call positions from the 13F — totals include every disclosed option leg
| Type | Underlying | Notional value | Underlying shares |
|---|---|---|---|
| PUT · bearish | ISHARES RUSSELL 2000 ETFIWM | $17.3M | 58K |
13F filers disclose option positions at the market value of the underlying the contracts reference, not the premium paid. A put is a bearish bet (it gains if the stock falls); a call is bullish. “Underlying shares” is the share count the contracts control, not a share holding. These legs are excluded from the equity book, weighting, concentration and sector figures above.
As-of date vs the date the SEC received each filing
| Quarter | As of | Filed | Positions | Value | Form |
|---|---|---|---|---|---|
| Q2 2026 | Jun 30, 2026 | Aug 14, 2026 | 1,713 | $11.0B | 13F-HR |
| Q1 2026 | Mar 31, 2026 | May 13, 2026 | 1,755 | $9.8B | 13F-HR |
| Q4 2025 | Dec 31, 2025 | Feb 17, 2026 | 1,486 | $10.2B | 13F-HR |
| Q3 2025 | Sep 30, 2025 | Nov 13, 2025 | 1,474 | $16.5B | 13F-HR |
| Q2 2025 | Jun 30, 2025 | Aug 12, 2025 | 1,512 | $20.7B | 13F-HR |
| Q1 2025 | Mar 31, 2025 | May 15, 2025 | 1,329 | $7.6B | 13F-HR |
| Q4 2024 | Dec 31, 2024 | Feb 11, 2025 | 942 | $4.4B | 13F-HR |
| Q3 2024 | Sep 30, 2024 | Nov 13, 2024 | 829 | $4.6B | 13F-HR |
| Q2 2024 | Jun 30, 2024 | Aug 14, 2024 | 497 | $4.8B | 13F-HR |
| Q1 2024 | Mar 31, 2024 | May 15, 2024 | 363 | $4.5B | 13F-HR |
| Q4 2023 | Dec 31, 2023 | Feb 13, 2024 | 363 | $3.9B | 13F-HR |
| Q3 2023 | Sep 30, 2023 | Nov 14, 2023 | 435 | $3.9B | 13F-HR |
| Q2 2023 | Jun 30, 2023 | Aug 11, 2023 | 476 | $4.6B | 13F-HR |
| Q1 2023 | Mar 31, 2023 | May 15, 2023 | 597 | $5.1B | 13F-HR |
| Q4 2022 | Dec 31, 2022 | Feb 14, 2023 | 767 | $5.9B | 13F-HR |
| Q3 2022 | Sep 30, 2022 | Nov 14, 2022 | 1,356 | $7.2B | 13F-HR |
| Q2 2022 | Jun 30, 2022 | Aug 15, 2022 | 1,661 | $9.7B | 13F-HR |
| Q1 2022 | Mar 31, 2022 | May 16, 2022 | 1,308 | $9.4B | 13F-HR |
| Q4 2021 | Dec 31, 2021 | Feb 14, 2022 | 1,351 | $10.0B | 13F-HR |
| Q3 2021 | Sep 30, 2021 | Jan 14, 2022 | 1,287 | $9.8B | 13F-HR/A |
| Q2 2021 | Jun 30, 2021 | Aug 6, 2021 | 1,173 | $10.6B | 13F-HR |
| Q1 2021 | Mar 31, 2021 | May 14, 2021 | 1,026 | $10.4B | 13F-HR |
| Q4 2020 | Dec 31, 2020 | Feb 12, 2021 | 693 | $7.1B | 13F-HR |
Holdings from SEC EDGAR 13F-HR filings, updated quarterly, filed up to 45 days after quarter-end. Public domain. The book and weighting are long equity only; disclosed put/call options are listed separately and excluded from those totals. Price-derived performance is withheld until the price-source policy and freshness gate are green.