13F filer · CIK 1352851 ↗
Magnetar Financial LLC
You are looking at Q3 2019. See the latest, Q2 2026 →
Reported value
$3.93B
−21% on the quarter before
Positions
470
211 new · 176 sold out
Top 10
43.3%
of the value
Est. gain
−$10.7M
on stocks held all quarter
Est. return
−0.4%
on those stocks since Q2 2019
Positions as of Sep 30, 2019, 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, 64% of the reported value, each sized by its share, colored by what the fund did with it since Q2 2019. Striped tiles are options.
Largest buys
Since Q2 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.
- Acacia Communications Inc~$127.2MNew · 0.0% → 3.2%+1,944,407 shares
- Uber~$94.8MNew · 0.0% → 2.4%+3,305,678 shares
- Allergan Plc~$64.6MAdded · 3.2% → 5.8%+383,885 shares
- Milacron Hldgs Corp~$63.0MAdded · 0.0% → 1.6%+3,778,258 shares
- Gannett Co Inc~$46.7MNew · 0.0% → 1.2%+4,345,346 shares
- Carrizo Oil & Gas Inc~$42.0MNew · 0.0% → 1.1%+4,891,397 shares
- Genomic Health Inc~$32.8MNew · 0.0% → 0.8%+483,143 shares
- Semgroup Corp~$32.5MNew · 0.0% → 0.8%+1,991,088 shares
- Sunnova Energy Intl Inc~$24.4MNew · 0.0% → 0.6%+2,307,789 shares
- Experience Investment Corp~$23.0MNew · 0.0% → 0.6%+2,300,001 shares
Largest sells
Since Q2 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.
- First Data Corp New~$230.4MSold out · 4.6% → 0.0%−8,511,692 shares
- Worldpay Inc~$228.8MSold out · 4.6% → 0.0%−1,866,876 shares
- Total Sys Svcs Inc~$224.1MSold out · 4.5% → 0.0%−1,746,766 shares
- Red Hat Inc~$212.2MSold out · 4.2% → 0.0%−1,130,052 shares
- Tribune Media Co~$198.7MSold out · 4.0% → 0.0%−4,298,561 shares
- Tableau Software Inc~$173.3MSold out · 3.5% → 0.0%−1,043,801 shares
- Array Biopharma Inc~$148.4MSold out · 3.0% → 0.0%−3,204,024 shares
- Anadarko Pete Corp~$123.5MSold out · 2.5% → 0.0%−1,749,685 shares
- Finisar Corp~$117.4MSold out · 2.4% → 0.0%−5,135,411 shares
- Global Brass & Coppr Hldgs I~$40.6MSold out · 0.8% → 0.0%−928,354 shares
Holdings
As of Sep 30, 2019. Changes are in shares against Jun 30, 2019, so a price move alone never reads as a buy or a sale.
| Holding | Value | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Allergan PlcSHS · shares +40% · price +0.5% | 5.8% | $227.2M | +$830,971 | ||||||||
| Wellcare Health Plans IncCOM · shares −10% · price −9.1% | 5.4% | $211.9M | −$21.2M | ||||||||
| Wabco Hldgs IncCOM · shares −11% · price +0.9% | 5.0% | $197.6M | +$1.7M | ||||||||
| Cypress Semiconductor CorpCOM · shares −10% · price +4.9% | 4.5% | $178.0M | +$8.4M | ||||||||
| Caesars Entmt CorpCOM · shares +13% · price −1.4% | 4.4% | $173.6M | −$2.1M | ||||||||
| Celgene CorpCOM · shares −7.9% · price +7.4% | 4.4% | $172.4M | +$11.9M | ||||||||
| Mellanox Technologies LtdSHS · shares −11% · price −1.0% | 4.2% | $165.1M | −$1.6M | ||||||||
| Versum Matls IncCOM · shares −11% · price +2.6% | 3.3% | $130.6M | +$3.3M | ||||||||
| Acacia Communications IncCOM · shares New | 3.2% | $127.2M | — | ||||||||
| Sprint CorporationCOM · shares −17% · price −6.1% | 3.1% | $120.3M | −$7.8M | ||||||||
| Advanced Disp Svcs Inc DelCOM · shares −12% · price +2.1% | 2.7% | $107.8M | +$2.2M | ||||||||
| UberCOM · shares New | 2.4% | $94.8M | — | ||||||||
| Medidata Solutions IncCOM · shares +28% · price +1.1% | 2.3% | $91.6M | +$776,621 | ||||||||
| Spark Therapeutics IncCOM · shares −12% · price −5.3% | 1.9% | $75.8M | −$4.2M | ||||||||
| Milacron Hldgs CorpCOM · shares +5,384% · price +20.9% | 1.6% | $64.2M | +$201,876 | ||||||||
| Churchill Cap Corp IiUNIT 99/99/9999 · shares 0% · price +3.5% | 1.3% | $52.5M | +$1.8M | ||||||||
| Energy Transfer LpCOM UT LTD PTN · shares 0% · price −7.1% | 1.3% | $51.2M | −$3.9M | ||||||||
| Gannett Co IncCOM · shares New | 1.2% | $46.7M | — | ||||||||
| Legacy Tex Finl Group IncCOM · shares +15% · price +6.9% | 1.1% | $43.6M | +$2.5M | ||||||||
| Carrizo Oil & Gas IncCOM · shares New | 1.1% | $42.0M | — | ||||||||
| Pacific Biosciences Calif InCOM · shares −11% · price −14.7% | 0.93% | $36.5M | −$6.3M | ||||||||
| Genomic Health IncCOM · shares New | 0.83% | $32.8M | — | ||||||||
| Semgroup CorpCL A · shares New | 0.83% | $32.5M | — | ||||||||
| Microchip TechnologyNOTE 2.250% 2/1 · shares −7.4% · price +9.7% | 0.71% | $28.1M | — | ||||||||
| Astrazeneca PlcSPONSORED ADR · shares +18% · price +8.0% | 0.69% | $27.2M | +$1.7M | ||||||||
| Total · 470 positions | 100% | $3.93B | −$10.7M |
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 Q2 2019 to Q3 2019: 247 stocks held throughout, down $10.7M (−0.4%).
- Celgene Corp+$11.9M+7%
- Cypress Semiconductor Corp+$8.4M+5%
- Versum Matls Inc+$3.3M+3%
- Clarivate Analytics Plc+$3.1M+24%
- Legacy Tex Finl Group Inc+$2.5M+7%
- Energy Transfer Lp−$3.9M−7%
- Spark Therapeutics Inc−$4.2M−5%
- Pacific Biosciences Calif In−$6.3M−15%
- Sprint Corporation−$7.8M−6%
- Wellcare Health Plans Inc−$21.2M−9%
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 ↗ |