13F filer · CIK 1352851 ↗
Magnetar Financial LLC
You are looking at Q4 2017. See the latest, Q2 2026 →
Reported value
$5.62B
+1.8% on the quarter before
Positions
674
314 new · 343 sold out
Top 10
43.6%
of the value
Est. gain
−$34.0M
on stocks held all quarter
Est. return
−1.1%
on those stocks since Q3 2017
Positions as of Dec 31, 2017, 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 Q3 2017. Striped tiles are options.
Largest buys
Since Q3 2017, 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.
- Aetna Inc~$267.4MAdded · 0.0% → 4.8%+1,482,313 shares
- Cavium Inc~$218.6MNew · 0.0% → 3.9%+2,607,775 shares
- Calatlantic Group Inc~$154.3MAdded · 0.0% → 2.8%+2,736,891 shares
- Regal Entmt Group~$124.8MNew · 0.0% → 2.2%+5,422,422 shares
- Alps ETF Tr~$116.0MAdded · 0.2% → 2.2%+10,750,100 shares
- Time Warner Inc~$102.9MAdded · 6.8% → 7.8%+1,125,073 shares
- Monsanto Co New~$85.5MAdded · 3.3% → 4.7%+732,410 shares
- Rockwell Collins Inc~$83.3MAdded · 3.3% → 4.9%+614,566 shares
- Broadsoft Inc~$81.1MNew · 0.0% → 1.4%+1,477,506 shares
- Ignyta Inc~$74.6MNew · 0.0% → 1.3%+2,795,526 shares
Largest sells
Since Q3 2017, 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.
- Bard C R Inc~$174.2MSold out · 3.2% → 0.0%−543,407 shares
- Level 3 Communications Inc~$170.3MSold out · 3.1% → 0.0%−3,196,236 shares
- Rice Energy Inc~$169.5MSold out · 3.1% → 0.0%−5,858,341 shares
- Brocade Communications Sys I~$131.8MSold out · 2.4% → 0.0%−11,030,810 shares
- Digitalglobe Inc~$102.3MSold out · 1.9% → 0.0%−2,901,736 shares
- Kite Pharma Inc~$99.4MSold out · 1.8% → 0.0%−552,659 shares
- Alere Inc~$78.3MSold out · 1.4% → 0.0%−1,535,671 shares
- Diamondback Energy Inc~$69.9MCut · 1.0% → 0.0%−553,792 shares
- Astoria Finl Corp~$69.3MSold out · 1.3% → 0.0%−3,221,580 shares
- Intel~$64.7MSold out · 1.2% → 0.0%−35,148,000 shares
Holdings
As of Dec 31, 2017. Changes are in shares against Sep 30, 2017, so a price move alone never reads as a buy or a sale.
| Holding | Value | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Time Warner IncCOM · shares +31% · price −10.7% | 7.8% | $436.6M | −$40.1M | ||||||||
| Nxp Semiconductors N VCOM · shares −7.4% · price +3.5% | 5.5% | $308.8M | +$10.6M | ||||||||
| Rockwell Collins IncCOM · shares +44% · price +3.8% | 4.9% | $274.2M | +$6.9M | ||||||||
| Aetna IncCOM · shares +17,258% · price +13.4% | 4.8% | $268.9M | +$183,371 | ||||||||
| Monsanto Co NewCOM · shares +48% · price −2.5% | 4.7% | $264.5M | −$4.7M | ||||||||
| Cavium IncCOM · shares New | 3.9% | $218.6M | — | ||||||||
| Scripps Networks Interact InCL A COM · shares +30% · price −0.6% | 3.4% | $193.1M | −$888,673 | ||||||||
| Wgl Hldgs IncCOM · shares +23% · price +1.9% | 3.0% | $167.7M | +$2.6M | ||||||||
| Orbital Atk IncCOM · shares +46% · price −1.2% | 2.8% | $158.3M | −$1.4M | ||||||||
| Avista CorpCOM · shares +10% · price −0.5% | 2.8% | $155.7M | −$770,014 | ||||||||
| Calatlantic Group IncCOM · shares +50,016% · price +54.3% | 2.8% | $154.6M | +$108,566 | ||||||||
| Tribune Media CoCL A · shares +2.2% · price +3.9% | 2.7% | $151.7M | +$5.6M | ||||||||
| Regal Entmt GroupCL A · shares New | 2.2% | $124.8M | — | ||||||||
| Alps ETF TrALERIAN MLP · shares +1,371% · price −3.8% | 2.2% | $124.5M | −$337,489 | ||||||||
| Akorn IncCOM · shares +10% · price −2.9% | 2.1% | $119.3M | −$3.2M | ||||||||
| Spectra Energy Partners LpCOM · shares +49% · price −10.9% | 1.6% | $90.6M | −$7.5M | ||||||||
| Western Gas Partners LpCOM UNIT LP IN · shares +5.5% · price −6.2% | 1.5% | $85.9M | −$5.4M | ||||||||
| Kinder MorganCOM · shares 0% · price −5.8% | 1.5% | $82.7M | −$5.1M | ||||||||
| Broadsoft IncCOM · shares New | 1.4% | $81.1M | — | ||||||||
| Ignyta IncCOM · shares New | 1.3% | $74.6M | — | ||||||||
| Nxstage Medical IncCOM · shares 0% · price −12.2% | 1.3% | $74.6M | −$10.4M | ||||||||
| Pioneer Nat Res CoCOM · shares −14% · price +17.2% | 1.3% | $72.3M | +$10.6M | ||||||||
| General Cable Corp Del NewCOM · shares New | 1.2% | $69.8M | — | ||||||||
| Parsley Energy IncCL A · shares +8,893% · price +11.8% | 1.2% | $66.2M | +$77,559 | ||||||||
| Dynegy Inc New DelCOM · shares New | 1.1% | $62.6M | — | ||||||||
| Total · 674 positions | 100% | $5.62B | −$34.0M |
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 Q3 2017 to Q4 2017: 345 stocks held throughout, down $34.0M (−1.1%).
- Pioneer Nat Res Co+$10.6M+17%
- Nxp Semiconductors N V+$10.6M+4%
- Rockwell Collins Inc+$6.9M+4%
- Tribune Media Co+$5.6M+4%
- Royal Dutch Shell Plc+$5.2M+9%
- Kinder Morgan−$5.1M−6%
- Western Gas Partners Lp−$5.4M−6%
- Spectra Energy Partners Lp−$7.5M−11%
- Nxstage Medical Inc−$10.4M−12%
- Time Warner Inc−$40.1M−11%
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 ↗ |