13F filer · CIK 1352851 ↗
Magnetar Financial LLC
Reported value
$10.96B
+11% on the quarter before
Positions
1,134
496 new · 492 sold out
Top 10
54.3%
of the value
Est. gain
+$1.73B
on stocks held all quarter
Est. return
+25.7%
on those stocks since Q1 2026
Positions as of Jun 30, 2026, from Magnetar Financial LLC's 13F filing with the SEC. A 13F lists a manager's US-listed stocks and options at a quarter end and is filed up to 45 days later, so the fund may hold something else today. It leaves out short positions, cash and holdings outside the US.
Portfolio at a glance
- New
- Added
- Cut
- Same
- Options
The 24 largest positions, 63% of the reported value, each sized by its share, colored by what the fund did with it since Q1 2026. Striped tiles are options.
Largest buys
Since Q1 2026, by estimated size: the change in shares at the quarter-end price, since a 13F gives no trade prices. Percentages are the position's share of the portfolio, before and after.
- Dominion Energy~$83.3MNew · 0.0% → 0.8%+1,219,394 shares
- Alphabet~$75.5MNew · 0.0% → 0.7%+1,496,367 shares
- Roku~$69.5MAdded · 0.0% → 0.6%+503,435 shares
- FirstEnergy~$61.7MNew · 0.0% → 0.6%+56,500,000 shares
- Gamestop Corp~$56.8MNew · 0.0% → 0.5%+55,570,000 shares
- Bio-Techne~$53.8MNew · 0.0% → 0.5%+761,911 shares
- Apogee Therapeutics Inc~$53.0MNew · 0.0% → 0.5%+399,123 shares
- Caesars Entertainment Inc Ne~$52.7MNew · 0.0% → 0.5%+1,746,938 shares
- LiveRamp~$51.9MNew · 0.0% → 0.5%+1,379,116 shares
- Payoneer~$50.5MAdded · 0.0% → 0.5%+7,096,695 shares
Largest sells
Since Q1 2026, by estimated size: the change in shares at the quarter-end price, since a 13F gives no trade prices. Percentages are the position's share of the portfolio, before and after.
- CoreWeave~$1.64BCut · 48.2% → 47.3%−16,503,467 shares
- Air Lease Corp~$87.2MSold out · 0.9% → 0.0%−1,342,230 shares
- Proassurance Corp~$80.3MSold out · 0.8% → 0.0%−3,246,435 shares
- Masimo Corp~$76.0MSold out · 0.8% → 0.0%−427,081 shares
- Veeco~$75.0MCut · 0.4% → 0.2%−989,237 shares
- Csg Sys Intl Inc~$64.5MSold out · 0.7% → 0.0%−807,431 shares
- Amicus Therapeutic~$57.6MSold out · 0.6% → 0.0%−3,986,058 shares
- Tri Pointe Homes Inc~$55.5MSold out · 0.6% → 0.0%−1,188,448 shares
- Arcellx Inc~$45.3MSold out · 0.5% → 0.0%−394,931 shares
- Thermon Group Hldgs Inc~$38.2MSold out · 0.4% → 0.0%−757,996 shares
Holdings
As of Jun 30, 2026. Changes are in shares against Mar 31, 2026, so a price move alone never reads as a buy or a sale.
| Holding | Value | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| CoreWeaveCOM CL A · shares −24% · price +43.8% | 47.3% | $5.18B | +$1.58B | ||||||||
| Hewlett Packard Enterprise7.625 MAND CONV · shares −18% · price +79.7% | 0.81% | $89.0M | +$39.5M | ||||||||
| Webster Finl CorpCOM · shares +1.8% · price +10.1% | 0.81% | $88.4M | +$8.0M | ||||||||
| KenvueCOM · shares +0.2% · price +10.8% | 0.80% | $88.2M | +$8.6M | ||||||||
| Chart Inds IncCOM · shares −0.5% · price +1.1% | 0.80% | $87.4M | +$916,098 | ||||||||
| Norfolk SouthernCOM · shares +0.02% · price +11.4% | 0.79% | $86.6M | +$8.9M | ||||||||
| JD.comNOTE 0.250% 6/0 · shares +16% · price −1.5% | 0.78% | $85.1M | — | ||||||||
| Dominion EnergyCOM · shares New | 0.76% | $83.3M | — | ||||||||
| Txnm Energy IncCOM · shares −1.8% · price −2.9% | 0.75% | $82.2M | −$2.4M | ||||||||
| Penumbra IncCOM · shares +1.8% · price −3.8% | 0.74% | $80.8M | −$3.2M | ||||||||
| Teck Resources LtdCL B · shares −11% · price +14.9% | 0.72% | $79.1M | +$10.3M | ||||||||
| Microchip TechnologyDEP SHS REPSTG · shares −4.2% · price +33.8% | 0.69% | $75.6M | +$19.1M | ||||||||
| AlphabetDEP SHS RP1/20 A · shares New | 0.69% | $75.5M | — | ||||||||
| AlibabaNOTE 0.500% 6/0 · shares +93% · price −15.2% | 0.68% | $74.5M | — | ||||||||
| Warner Bros Discovery IncCOM SER A · shares −8.9% · price −1.6% | 0.67% | $73.3M | −$1.2M | ||||||||
| RokuCOM CL A · shares +13,812% · price +46.0% | 0.64% | $70.0M | +$158,631 | ||||||||
| Digitalbridge Group IncCL A NEW · shares −2.3% · price +2.3% | 0.59% | $65.0M | +$1.5M | ||||||||
| Oracle6.5 DEP CUM SR D · shares +119% · price −2.0% | 0.58% | $64.1M | −$589,792 | ||||||||
| FirstEnergyNOTE 3.625% 1/1 · shares New | 0.56% | $61.7M | — | ||||||||
| Trip.comNOTE 0.750% 6/1 · shares −16% · price −4.2% | 0.53% | $57.7M | — | ||||||||
| Gamestop CorpNOTE 4/0 · shares New | 0.52% | $56.8M | — | ||||||||
| National Storage AffiliatesCOM SHS BEN IN · shares +0.7% · price +17.8% | 0.50% | $55.0M | +$8.3M | ||||||||
| Silicon LabsCOM · shares +2.2% · price +5.0% | 0.50% | $54.9M | +$2.6M | ||||||||
| Bio-TechneCOM · shares New | 0.49% | $53.8M | — | ||||||||
| Apogee Therapeutics IncCOM · shares New | 0.48% | $53.0M | — | ||||||||
| Total · 1,134 positions | 100% | $10.96B | +$1.73B |
Price is a stock's reported value over its shares at the quarter end. The estimated gain is the shares held at both quarter ends times the change in that price: shares bought or sold during the quarter add nothing, options are left out, and a stock split is read into the earlier share count and price.
What made money
From Q1 2026 to Q2 2026: 633 stocks held throughout, up $1.73B (+25.7%).
- CoreWeave+$1.58B+44%
- Hewlett Packard Enterprise+$39.5M+80%
- Microchip Technology+$19.1M+34%
- Churchill Cap Corp Xi+$14.0M+72%
- Veeco+$11.6M+124%
- Penumbra Inc−$3.2M−4%
- Albemarle Corporation−$3.8M−23%
- Liberty Broadband Corp−$12.3M−34%
- Valaris Ltd−$12.4M−26%
- Allied Gold Corp−$15.3M−23%
Estimated as in the holdings table: shares held at both quarter ends times the change in price; options left out, 5 splits read into the share counts.
Reported value by quarter
The total value of each quarter's 13F at that quarter end. It moves with prices as well as with buying and selling. Pick a quarter to see what the fund held then.
Every quarter's filing
| Quarter | Reported value | Filing | |
|---|---|---|---|
| Q2 2026 | Aug 14, 2026 | $10.96B+11% | SEC ↗ |
| Q1 2026 | May 13, 2026 | $9.84B−4% | SEC ↗ |
| Q4 2025 | Feb 17, 2026 | $10.21B−38% | SEC ↗ |
| Q3 2025 | Nov 13, 2025 | $16.50B−20% | SEC ↗ |
| Q2 2025 | Aug 12, 2025 | $20.65B+171% | SEC ↗ |
| Q1 2025 | May 15, 2025 | $7.61B+75% | SEC ↗ |
| Q4 2024 | Feb 11, 2025 | $4.36B−6% | SEC ↗ |
| Q3 2024 | Nov 13, 2024 | $4.62B−4% | SEC ↗ |
| Q2 2024 | Aug 14, 2024 | $4.80B+7% | SEC ↗ |
| Q1 2024 | May 15, 2024 | $4.47B+13% | SEC ↗ |
| Q4 2023 | Feb 13, 2024 | $3.94B+1% | SEC ↗ |
| Q3 2023 | Nov 14, 2023 | $3.92B−14% | SEC ↗ |
| Q2 2023 | Aug 11, 2023 | $4.56B−11% | SEC ↗ |
| Q1 2023 | May 15, 2023 | $5.13B−13% | SEC ↗ |
| Q4 2022 | Feb 14, 2023 | $5.91B−18% | SEC ↗ |
| Q3 2022 | Nov 14, 2022 | $7.21B−25% | SEC ↗ |
| Q2 2022 | Aug 15, 2022 | $9.67B+3% | SEC ↗ |
| Q1 2022 | May 16, 2022 | $9.37B−6% | SEC ↗ |
| Q4 2021 | Feb 14, 2022 | $9.96B+1% | SEC ↗ |
| Q3 2021 | Jan 14, 2022 (amended) | $9.82B−7% | SEC ↗ |
| Q2 2021 | Aug 6, 2021 | $10.56B+2% | SEC ↗ |
| Q1 2021 | May 14, 2021 | $10.40B+47% | SEC ↗ |
| Q4 2020 | Feb 12, 2021 | $7.08B+25% | SEC ↗ |
| Q3 2020 | Nov 16, 2020 | $5.66B+67% | SEC ↗ |
| Q2 2020 | Aug 14, 2020 | $3.39B−18% | SEC ↗ |
| Q1 2020 | May 15, 2020 | $4.15B−13% | SEC ↗ |
| Q4 2019 | Feb 13, 2020 | $4.79B+22% | SEC ↗ |
| Q3 2019 | Nov 14, 2019 | $3.93B−21% | SEC ↗ |
| Q2 2019 | Aug 14, 2019 | $5.00B+29% | SEC ↗ |
| Q1 2019 | May 15, 2019 | $3.89B−5% | SEC ↗ |
| Q4 2018 | Feb 14, 2019 | $4.08B−26% | SEC ↗ |
| Q3 2018 | Feb 14, 2019 (amended) | $5.54B−16% | SEC ↗ |
| Q2 2018 | Aug 14, 2018 (amended) | $6.56B+13% | SEC ↗ |
| Q1 2018 | May 15, 2018 (amended) | $5.80B+3% | SEC ↗ |
| Q4 2017 | Feb 14, 2018 (amended) | $5.62B+2% | SEC ↗ |
| Q3 2017 | Nov 14, 2017 (amended) | $5.52B−15% | SEC ↗ |
| Q2 2017 | Aug 14, 2017 (amended) | $6.52B−7% | SEC ↗ |
| Q1 2017 | May 15, 2017 (amended) | $7.02B+1,897% | SEC ↗ |
| Q4 2016 | Aug 14, 2017 (amended) | $351.5M−95% | SEC ↗ |
| Q3 2016 | Nov 14, 2016 (amended) | $7.03B+17% | SEC ↗ |
| Q2 2016 | Aug 15, 2016 (amended) | $6.02B−7% | SEC ↗ |
| Q1 2016 | May 16, 2016 (amended) | $6.49B | SEC ↗ |