13F filer · CIK 1352851 ↗
Magnetar Financial LLC
You are looking at Q1 2020. See the latest, Q2 2026 →
Reported value
$4.15B
−13% on the quarter before
Positions
456
218 new · 286 sold out
Top 10
37.4%
of the value
Est. gain
−$239.6M
on stocks held all quarter
Est. return
−8.2%
on those stocks since Q4 2019
Positions as of Mar 31, 2020, 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 Q4 2019. Striped tiles are options.
Largest buys
Since Q4 2019, 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.
- Willis Towers Watson Plc Ltd~$172.2MNew · 0.0% → 4.1%+1,014,060 shares
- Hp Inc~$148.3MNew · 0.0% → 3.6%+8,540,993 shares
- E Trade Financial Corp~$122.5MNew · 0.0% → 2.9%+3,568,493 shares
- Churchill Cap Corp Iii~$109.7MNew · 0.0% → 2.6%+10,970,688 shares
- Qiagen Nv~$100.4MAdded · 0.0% → 2.4%+2,485,007 shares
- Forty Seven Inc~$81.5MNew · 0.0% → 2.0%+854,644 shares
- Flying Eagle Acquisition Cor~$67.9MNew · 0.0% → 1.6%+6,812,472 shares
- Pfizer Inc~$32.6MAdded · 0.0% → 0.8%+1,000,000 shares
- Meet Group Inc~$30.1MNew · 0.0% → 0.7%+5,131,948 shares
- Gores Hldgs Iv Inc~$29.5MNew · 0.0% → 0.7%+2,928,037 shares
Largest sells
Since Q4 2019, 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.
- Wellcare Health Plans Inc~$221.4MSold out · 4.6% → 0.0%−670,556 shares
- Medicines Co~$160.8MSold out · 3.4% → 0.0%−1,892,832 shares
- Audentes Therapeutics Inc~$95.4MSold out · 2.0% → 0.0%−1,594,605 shares
- Tiffany & Co New~$86.9MCut · 3.9% → 2.3%−671,403 shares
- Sprint Corporation~$54.5MCut · 1.8% → 2.1%−6,324,058 shares
- Wabco Hldgs Inc~$54.1MCut · 4.0% → 3.3%−400,341 shares
- Interxion Holding N.V~$48.7MSold out · 1.0% → 0.0%−581,215 shares
- Arqule Inc~$47.6MSold out · 1.0% → 0.0%−2,386,795 shares
- Continental Bldg Prods Inc~$46.9MSold out · 1.0% → 0.0%−1,286,176 shares
- Caesars Entmt Corp~$42.5MCut · 4.2% → 1.4%−6,285,140 shares
Holdings
As of Mar 31, 2020. Changes are in shares against Dec 31, 2019, so a price move alone never reads as a buy or a sale.
| Holding | Value | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Allergan PlcSHS · shares +6.7% · price −7.4% | 5.8% | $240.2M | −$17.9M | ||||||||
| Willis Towers Watson Plc LtdSHS · shares New | 4.1% | $172.2M | — | ||||||||
| Mellanox Technologies LtdSHS · shares −3.4% · price +3.5% | 4.1% | $172.1M | +$5.9M | ||||||||
| Cypress Semiconductor CorpCOM · shares −6.6% · price −0.0% | 4.0% | $166.4M | −$70,876 | ||||||||
| Hp IncCOM · shares New | 3.6% | $148.3M | — | ||||||||
| Wright Med Group N VORD SHS · shares −17% · price −6.0% | 3.4% | $142.9M | −$9.1M | ||||||||
| Wabco Hldgs IncCOM · shares −28% · price −0.3% | 3.3% | $138.8M | −$461,842 | ||||||||
| Td Ameritrade Hldg CorpCOM · shares −5.7% · price −30.3% | 3.1% | $128.4M | −$55.7M | ||||||||
| E Trade Financial CorpCOM NEW · shares New | 2.9% | $122.5M | — | ||||||||
| Acacia Communications IncCOM · shares −5.7% · price −0.9% | 2.9% | $120.0M | −$1.1M | ||||||||
| Churchill Cap Corp IiiUNIT 03/01/2027 ADDED · shares New | 2.6% | $109.7M | — | ||||||||
| Qiagen NvSHS NEW · shares +24,275% · price +19.5% | 2.4% | $100.8M | +$67,415 | ||||||||
| Advanced Disp Svcs Inc DelCOM · shares −8.4% · price −0.2% | 2.3% | $97.2M | −$207,300 | ||||||||
| Tiffany & Co NewCOM · shares −48% · price −3.1% | 2.3% | $95.5M | −$3.1M | ||||||||
| Sprint CorporationCOM · shares −39% · price +65.5% | 2.1% | $86.0M | +$34.0M | ||||||||
| Forty Seven IncCOM · shares New | 2.0% | $81.5M | — | ||||||||
| Ra Pharmaceuticals IncCOM · shares −8.6% · price +2.3% | 1.9% | $80.6M | +$1.8M | ||||||||
| Fitbit IncCL A · shares −6.0% · price +1.4% | 1.8% | $76.5M | +$1.0M | ||||||||
| Flying Eagle Acquisition CorUNIT 99/99/9999 ADDED · shares New | 1.6% | $67.9M | — | ||||||||
| Kemet CorpCOM NEW · shares −8.7% · price −10.7% | 1.5% | $63.4M | −$7.6M | ||||||||
| UberCOM · shares −26% · price −6.1% | 1.4% | $59.0M | −$3.8M | ||||||||
| Caesars Entmt CorpCOM · shares −42% · price −50.3% | 1.4% | $58.3M | −$59.0M | ||||||||
| Churchill Cap Corp IiUNIT 99/99/9999 · shares 0% · price −3.5% | 1.3% | $52.0M | −$1.9M | ||||||||
| Stars Group IncCOM · shares −7.2% · price −21.7% | 0.94% | $39.1M | −$10.9M | ||||||||
| Pfizer IncCOM · shares +3,228% · price −16.7% | 0.81% | $33.7M | −$202,977 | ||||||||
| Total · 456 positions | 100% | $4.15B | −$239.6M |
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 2019 to Q1 2020: 231 stocks held throughout, down $239.6M (−8.2%).
- Sprint Corporation+$34.0M+65%
- Williams Companies44:1 split+$11.6M+2,523%
- Mellanox Technologies Ltd+$5.9M+4%
- Ra Pharmaceuticals Inc+$1.8M+2%
- Fitbit Inc+$1.0M+1%
- Envista Holdings Corporation−$14.3M−50%
- Allergan Plc−$17.9M−7%
- Energy Transfer Lp−$27.7M−64%
- Td Ameritrade Hldg Corp−$55.7M−30%
- Caesars Entmt Corp−$59.0M−50%
Estimated as in the holdings table: shares held at both quarter ends times the change in price; options left out, 1 split 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 ↗ |