13F filer · CIK 1352851 ↗
Magnetar Financial LLC
You are looking at Q1 2023. See the latest, Q2 2026 →
Reported value
$5.13B
−13% on the quarter before
Positions
597
186 new · 356 sold out
Top 10
19.1%
of the value
Est. gain
−$23.1M
on stocks held all quarter
Est. return
−0.8%
on those stocks since Q4 2022
Positions as of Mar 31, 2023, 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, 39% of the reported value, each sized by its share, colored by what the fund did with it since Q4 2022. Striped tiles are options.
Largest buys
Since Q4 2022, 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.
- Abbott Labs~$99.9MNew · 0.0% → 1.9%+986,331 shares
- Univar Solutions Inc~$98.4MNew · 0.0% → 1.9%+2,810,146 shares
- Evoqua Water Technologies Co~$87.0MNew · 0.0% → 1.7%+1,749,923 shares
- Mckesson Corp~$84.4MAdded · 0.4% → 2.1%+237,003 shares
- Radius Global Infrastrctre I~$80.6MNew · 0.0% → 1.6%+5,494,610 shares
- Momentive Global Inc~$71.8MNew · 0.0% → 1.4%+7,707,761 shares
- Qualtrics Intl Inc~$69.4MNew · 0.0% → 1.4%+3,894,425 shares
- Oak Str Health Inc~$67.6MNew · 0.0% → 1.3%+1,747,344 shares
- Focus Finl Partners Inc~$67.5MNew · 0.0% → 1.3%+1,300,892 shares
- Seagen Inc~$57.2MNew · 0.0% → 1.1%+282,533 shares
Largest sells
Since Q4 2022, 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.
- Iaa Inc~$103.9MSold out · 1.8% → 0.0%−2,597,785 shares
- Altra Indl Motion Corp~$79.5MSold out · 1.3% → 0.0%−1,330,998 shares
- Lhc Group Inc~$72.3MSold out · 1.2% → 0.0%−447,195 shares
- Meridian Bioscience Inc~$72.2MSold out · 1.2% → 0.0%−2,173,294 shares
- Cowen Inc~$61.1MSold out · 1.0% → 0.0%−1,581,286 shares
- Centene Corp Del~$54.2MCut · 1.3% → 0.1%−857,473 shares
- Signify Health Inc~$52.0MSold out · 0.9% → 0.0%−1,815,229 shares
- 1life Healthcare Inc~$52.0MSold out · 0.9% → 0.0%−3,110,462 shares
- Poshmark Inc~$40.8MSold out · 0.7% → 0.0%−2,283,107 shares
- Warburg Pincus Captal Corp I~$38.1MSold out · 0.6% → 0.0%−3,778,950 shares
Holdings
As of Mar 31, 2023. Changes are in shares against Dec 31, 2022, so a price move alone never reads as a buy or a sale.
| Holding | Value | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Churchill Capital Corp ViiCOM CL A · shares 0% · price +1.7% | 2.2% | $112.1M | +$1.9M | ||||||||
| Mckesson CorpCOM · shares +398% · price −5.1% | 2.1% | $105.6M | −$1.1M | ||||||||
| Encompass Health CorpCOM · shares +14% · price −9.5% | 2.0% | $103.7M | −$9.6M | ||||||||
| Abbott LabsCOM · shares New | 1.9% | $99.9M | — | ||||||||
| Univar Solutions IncCOM · shares New | 1.9% | $98.4M | — | ||||||||
| Aerojet Rocketdyne Hldgs IncCOM · shares −6.3% · price +0.4% | 1.9% | $95.4M | +$407,485 | ||||||||
| Pnm Res IncCOM · shares +1.7% · price −0.2% | 1.8% | $94.5M | −$210,337 | ||||||||
| Eli LillyCOM · shares +118% · price −6.1% | 1.8% | $92.6M | −$2.8M | ||||||||
| Shaw Communications IncCL B CONV · shares +1.8% · price +4.0% | 1.8% | $91.2M | +$3.4M | ||||||||
| Merck & Co IncCOM · shares +65% · price −4.1% | 1.7% | $87.3M | −$2.3M | ||||||||
| Evoqua Water Technologies CoCOM · shares New | 1.7% | $87.0M | — | ||||||||
| Radius Global Infrastrctre ICOM CL A · shares New | 1.6% | $80.6M | — | ||||||||
| Horizon Therapeutics Pub LSHS · shares −6.1% · price −4.1% | 1.6% | $80.3M | −$3.4M | ||||||||
| Albertsons Cos IncCOMMON STOCK · shares +1.8% · price +0.2% | 1.5% | $78.3M | +$148,547 | ||||||||
| Gilead Sciences IncCOM · shares +105% · price −3.4% | 1.5% | $77.8M | −$1.3M | ||||||||
| Nuvasive IncCOM · shares +110% · price +0.2% | 1.4% | $73.5M | +$59,253 | ||||||||
| Vmware IncCL A COM · shares −27% · price +1.7% | 1.4% | $73.2M | +$1.2M | ||||||||
| Momentive Global IncCOM · shares New | 1.4% | $71.8M | — | ||||||||
| Qualtrics Intl IncCOM CL A · shares New | 1.4% | $69.4M | — | ||||||||
| Activision Blizzard IncCOM · shares +1.8% · price +11.8% | 1.3% | $68.6M | +$7.1M | ||||||||
| The Cigna GroupCOM · shares +82% · price −22.9% | 1.3% | $67.9M | −$11.1M | ||||||||
| Oak Str Health IncCOM · shares New | 1.3% | $67.6M | — | ||||||||
| Focus Finl Partners IncCOM CL A · shares New | 1.3% | $67.5M | — | ||||||||
| Boston Scientific CorpCOM · shares −30% · price +8.1% | 1.2% | $63.4M | +$4.8M | ||||||||
| Forgerock IncCL A · shares +483% · price −9.5% | 1.1% | $58.6M | −$1.1M | ||||||||
| Total · 597 positions | 100% | $5.13B | −$23.1M |
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 2022 to Q1 2023: 382 stocks held throughout, down $23.1M (−0.8%).
- Activision Blizzard Inc+$7.1M+12%
- Cooper Cos Inc+$5.3M+13%
- Boston Scientific Corp+$4.8M+8%
- Algonquin Pwr Utils Corp+$3.8M+25%
- Shaw Communications Inc+$3.4M+4%
- Baxter Intl Inc−$7.6M−20%
- Elanco Animal Health Inc−$8.1M−23%
- First Horizon Corporation−$8.7M−27%
- Encompass Health Corp−$9.6M−10%
- The Cigna Group−$11.1M−23%
Estimated as in the holdings table: shares held at both quarter ends times the change in price; options left out.
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 ↗ |