13F filer · CIK 1352851 ↗
Magnetar Financial LLC
You are looking at Q2 2019. See the latest, Q2 2026 →
Reported value
$5.00B
+29% on the quarter before
Positions
435
201 new · 182 sold out
Top 10
42.6%
of the value
Est. gain
+$8.7M
on stocks held all quarter
Est. return
+0.4%
on those stocks since Q1 2019
Positions as of Jun 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
Each tile is a position, sized by its share, colored by what the fund did with it since Q1 2019. Striped tiles are options.
Largest buys
Since Q1 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.
- Total Sys Svcs Inc~$222.7MAdded · 0.0% → 4.5%+1,735,976 shares
- Cypress Semiconductor Corp~$189.3MNew · 0.0% → 3.8%+8,510,798 shares
- Tableau Software Inc~$173.3MNew · 0.0% → 3.5%+1,043,801 shares
- Allergan Plc~$159.6MAdded · 0.0% → 3.2%+953,272 shares
- Caesars Entmt Corp~$156.1MNew · 0.0% → 3.1%+13,205,974 shares
- Array Biopharma Inc~$148.4MNew · 0.0% → 3.0%+3,204,024 shares
- Versum Matls Inc~$143.3MNew · 0.0% → 2.9%+2,778,778 shares
- Anadarko Pete Corp~$122.5MAdded · 0.0% → 2.5%+1,735,550 shares
- Wabco Hldgs Inc~$122.4MAdded · 2.5% → 4.4%+923,359 shares
- Advanced Disp Svcs Inc Del~$119.5MNew · 0.0% → 2.4%+3,743,770 shares
Largest sells
Since Q1 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.
- Integrated Device Technology~$204.0MSold out · 5.3% → 0.0%−4,163,856 shares
- Arris International Plc~$201.8MSold out · 5.2% → 0.0%−6,385,563 shares
- U S G Corp~$145.3MSold out · 3.7% → 0.0%−3,356,051 shares
- Belmond Ltd~$77.0MSold out · 2.0% → 0.0%−3,089,311 shares
- Luxoft Hldg Inc~$75.3MSold out · 1.9% → 0.0%−1,282,196 shares
- Churchill Cap Corp~$73.9MSold out · 1.9% → 0.0%−5,500,000 shares
- Bemis Co Inc~$51.7MSold out · 1.3% → 0.0%−931,164 shares
- Infrareit Inc~$39.6MSold out · 1.0% → 0.0%−1,888,363 shares
- Nightstar Therapeutics Plc~$32.2MSold out · 0.8% → 0.0%−1,267,567 shares
- Worldpay Inc~$25.2MCut · 6.1% → 4.6%−205,353 shares
Holdings
As of Jun 30, 2019. Changes are in shares against Mar 31, 2019, so a price move alone never reads as a buy or a sale.
| Holding | Value | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Wellcare Health Plans IncCOM · shares +54% · price +5.7% | 5.2% | $260.2M | +$9.1M | ||||||||
| First Data Corp NewCOM CL A · shares −9.3% · price +3.0% | 4.6% | $230.4M | +$6.8M | ||||||||
| Worldpay IncCL A · shares −9.9% · price +8.0% | 4.6% | $228.8M | +$16.9M | ||||||||
| Total Sys Svcs IncCOM · shares +16,089% · price +35.0% | 4.5% | $224.1M | +$359,035 | ||||||||
| Wabco Hldgs IncCOM · shares +124% · price +0.6% | 4.4% | $220.8M | +$571,591 | ||||||||
| Red Hat IncCOM · shares −2.9% · price +2.8% | 4.2% | $212.2M | +$5.7M | ||||||||
| Tribune Media CoCL A · shares −3.0% · price +0.2% | 4.0% | $198.7M | +$343,517 | ||||||||
| Cypress Semiconductor CorpCOM · shares New | 3.8% | $189.3M | — | ||||||||
| Mellanox Technologies LtdSHS · shares −11% · price −6.5% | 3.8% | $187.8M | −$13.0M | ||||||||
| Celgene CorpCOM · shares −2.6% · price −2.0% | 3.5% | $174.2M | −$3.6M | ||||||||
| Tableau Software IncCL A · shares New | 3.5% | $173.3M | — | ||||||||
| Allergan PlcSHS · shares +7,333% · price +14.4% | 3.2% | $161.8M | +$273,591 | ||||||||
| Caesars Entmt CorpCOM · shares New | 3.1% | $156.1M | — | ||||||||
| Sprint CorporationCOM · shares −3.0% · price +16.3% | 3.1% | $154.6M | +$21.6M | ||||||||
| Array Biopharma IncCOM · shares New | 3.0% | $148.4M | — | ||||||||
| Versum Matls IncCOM · shares New | 2.9% | $143.3M | — | ||||||||
| Anadarko Pete CorpCOM · shares +12,278% · price +55.1% | 2.5% | $123.5M | +$354,367 | ||||||||
| Advanced Disp Svcs Inc DelCOM · shares New | 2.4% | $119.5M | — | ||||||||
| Finisar CorpCOM NEW · shares −3.4% · price −1.3% | 2.4% | $117.4M | −$1.5M | ||||||||
| Spark Therapeutics IncCOM · shares −3.4% · price −10.1% | 1.8% | $90.6M | −$10.2M | ||||||||
| Medidata Solutions IncCOM · shares New | 1.4% | $71.0M | — | ||||||||
| Energy Transfer LpCOM UT LTD PTN · shares −11% · price −8.4% | 1.1% | $55.1M | −$5.0M | ||||||||
| Churchill Cap Corp IiUNIT 99/99/9999 ADDED · shares New | 1.0% | $50.8M | — | ||||||||
| Pacific Biosciences Calif InCOM · shares −3.4% · price −16.3% | 0.96% | $48.0M | −$9.4M | ||||||||
| Global Brass & Coppr Hldgs ICOM · shares New | 0.81% | $40.6M | — | ||||||||
| Total · 435 positions | 100% | $5.00B | +$8.7M |
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 Q1 2019 to Q2 2019: 220 stocks held throughout, up $8.7M (+0.4%).
- Sprint Corporation+$21.6M+16%
- Worldpay Inc+$16.9M+8%
- Wellcare Health Plans Inc+$9.1M+6%
- First Data Corp New+$6.8M+3%
- Red Hat Inc+$5.7M+3%
- Lsc Communications Inc−$3.8M−44%
- Energy Transfer Lp−$5.0M−8%
- Pacific Biosciences Calif In−$9.4M−16%
- Spark Therapeutics Inc−$10.2M−10%
- Mellanox Technologies Ltd−$13.0M−6%
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 ↗ |