13F filer · CIK 1352851 ↗
Magnetar Financial LLC
You are looking at Q1 2025. See the latest, Q2 2026 →
Reported value
$7.61B
+75% on the quarter before
Positions
717
438 new · 310 sold out
Top 10
56.6%
of the value
Est. gain
+$5.8M
on stocks held all quarter
Est. return
+0.4%
on those stocks since Q4 2024
Positions as of Mar 31, 2025, 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
Each tile is a position, sized by its share, colored by what the fund did with it since Q4 2024. Striped tiles are options.
Largest buys
Since Q4 2024, 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~$3.55BNew · 0.0% → 46.7%+95,818,248 shares
- Beacon Roofing Supply Inc~$92.1MNew · 0.0% → 1.2%+744,640 shares
- Veren Inc~$83.7MNew · 0.0% → 1.1%+12,656,076 shares
- Paycor Hcm Inc~$82.4MNew · 0.0% → 1.1%+3,672,360 shares
- Playa Hotels & Resorts Nv~$66.2MNew · 0.0% → 0.9%+4,969,952 shares
- Intra-Cellular Therapies Inc~$57.5MNew · 0.0% → 0.8%+435,715 shares
- Proassurance Corp~$54.1MNew · 0.0% → 0.7%+2,317,816 shares
- H & E Equipment Services Inc~$48.6MNew · 0.0% → 0.6%+512,725 shares
- Accolade Inc~$40.1MNew · 0.0% → 0.5%+5,750,393 shares
- Redfin Corp~$39.0MNew · 0.0% → 0.5%+4,234,616 shares
Largest sells
Since Q4 2024, 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.
- Sanofi~$161.1MSold out · 3.7% → 0.0%−3,340,317 shares
- Elanco Animal Health Inc~$123.1MCut · 3.3% → 0.0%−11,720,811 shares
- Becton Dickinson & Co~$79.3MSold out · 1.8% → 0.0%−349,469 shares
- Summit Matls Inc~$79.1MSold out · 1.8% → 0.0%−1,563,121 shares
- Hashicorp Inc~$76.8MSold out · 1.8% → 0.0%−2,245,271 shares
- Heartland Finl Usa Inc~$64.5MSold out · 1.5% → 0.0%−1,052,698 shares
- Altair Engr Inc~$62.1MSold out · 1.4% → 0.0%−569,534 shares
- Regeneron Pharmaceuticals~$61.3MCut · 1.8% → 0.1%−96,608 shares
- Teleflex Incorporated~$57.7MCut · 1.7% → 0.0%−417,699 shares
- Cooper Cos Inc~$56.4MCut · 1.5% → 0.0%−668,063 shares
Holdings
As of Mar 31, 2025. Changes are in shares against Dec 31, 2024, so a price move alone never reads as a buy or a sale.
| Holding | Value | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| CoreWeaveCOM CL A · shares New | 46.7% | $3.55B | — | ||||||||
| KellanovaCOM · shares +20% · price +1.9% | 1.2% | $93.3M | +$1.4M | ||||||||
| Beacon Roofing Supply IncCOM · shares New | 1.2% | $92.1M | — | ||||||||
| Discover Finl SvcsCOM · shares +9.4% · price −1.5% | 1.1% | $86.6M | −$1.2M | ||||||||
| Veren IncCOM NEW · shares New | 1.1% | $83.7M | — | ||||||||
| Paycor Hcm IncCOM · shares New | 1.1% | $82.4M | — | ||||||||
| Championx CorporationCOM · shares +18% · price +9.6% | 1.1% | $82.1M | +$6.1M | ||||||||
| Ansys IncCOM · shares +16% · price −6.2% | 1.1% | $81.0M | −$4.6M | ||||||||
| Interpublic Group Cos IncCOM · shares +21% · price −3.1% | 1.0% | $79.7M | −$2.1M | ||||||||
| Juniper Networks IncCOM · shares +0.05% · price −3.4% | 1.0% | $78.1M | −$2.7M | ||||||||
| Berry Global Group IncCOM · shares +0.6% · price +7.9% | 1.0% | $78.1M | +$5.7M | ||||||||
| Frontier Communications PareCOM · shares +20% · price +3.3% | 1.0% | $77.8M | +$2.1M | ||||||||
| Playa Hotels & Resorts NvSHS · shares New | 0.87% | $66.2M | — | ||||||||
| Liberty Broadband CorpCOM SER C · shares +12% · price +13.8% | 0.79% | $59.9M | +$6.5M | ||||||||
| Amedisys IncCOM · shares +0.1% · price +2.0% | 0.78% | $59.1M | +$1.2M | ||||||||
| Intra-Cellular Therapies IncCOM · shares New | 0.76% | $57.5M | — | ||||||||
| FirstEnergyNOTE 4.000% 5/0 · shares +22% · price +0.8% | 0.75% | $57.4M | — | ||||||||
| Ford Mtr CoNOTE3/1 · shares +29% · price +0.9% | 0.75% | $56.8M | — | ||||||||
| Pactiv Evergreen IncCOM · shares +0.5% · price +3.1% | 0.73% | $55.6M | +$1.7M | ||||||||
| Proassurance CorpCOM · shares New | 0.71% | $54.1M | — | ||||||||
| H & E Equipment Services IncCOM · shares New | 0.64% | $48.6M | — | ||||||||
| Wayfair IncNOTE 3.500%11/1 · shares 0% · price −14.5% | 0.56% | $42.9M | — | ||||||||
| Accolade IncCOM · shares New | 0.53% | $40.1M | — | ||||||||
| Redfin CorpCOM · shares New | 0.51% | $39.0M | — | ||||||||
| Cross Ctry Healthcare IncCOM · shares +8.5% · price −18.0% | 0.48% | $36.8M | −$7.5M | ||||||||
| Total · 717 positions | 100% | $7.61B | +$5.8M |
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 Q4 2024 to Q1 2025: 265 stocks held throughout, up $5.8M (+0.4%).
- Wheeler Real Estate Invt Tr+$12.0M+69%
- Marvell Technology Inc8:1 split+$8.5M+346%
- Liberty Broadband Corp+$6.5M+14%
- Championx Corporation+$6.1M+10%
- Berry Global Group Inc+$5.7M+8%
- Juniper Networks Inc−$2.7M−3%
- Sandy Spring Bancorp Inc−$3.6M−17%
- Ansys Inc−$4.6M−6%
- Chart Inds Inc−$4.8M−22%
- Cross Ctry Healthcare Inc−$7.5M−18%
Estimated as in the holdings table: shares held at both quarter ends times the change in price; options left out, 2 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 ↗ |