13F filer · CIK 1352851 ↗

Magnetar Financial LLC

You are looking at Q1 2016. See the latest, Q2 2026 →

Reported value

$6.49B

First quarter on file

Positions

374

First quarter on file

Top 10

32.4%

of the value

Est. gain

—

Nothing to compare

Est. return

—

Nothing to compare

Filed

May 16, 2016 (amended)

On SEC EDGAR ↗

Positions as of Mar 31, 2016, 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

The 24 largest positions, 56% of the reported value, each sized by its share. Striped tiles are options.

* E M C Corp Mass5.1%

* Time Warner Cable Inc5.0%

* Starwood Hotels&Resorts Wrld4.1%

* Allergan Plc3.2%

* Ishares TrPUT3.2%

Rite Aid Corp2.6%

* Baxalta Inc2.4%

* Columbia Pipeline Group Inc2.1%

* Cigna Corporation2.0%

* Jarden Corp2.0%

* Transcanada Corp2.0%

* Humana Inc1.7%

* Itc Hldgs Corp1.7%

* Agl Res Inc1.6%

* Questar Corp1.6%

* Ingram Micro Inc1.6%

* Heartland Pmt Sys Inc1.6%

* Firstmerit Corp1.5%

* Piedmont Nat Gas Inc1.5%

* Boardwalk Pipeline Partners1.5%

* Pioneer Nat Res Co1.5%

* E M C Corp Mass5.1%

* Time Warner Cable Inc5.0%

* Starwood Hotels&Resorts Wrld4.1%

* Allergan Plc3.2%

* Ishares TrPUT3.2%

Rite Aid Corp2.6%

* Baxalta Inc2.4%

* Columbia Pipeline Group Inc2.1%

* Cigna Corporation2.0%

* Jarden Corp2.0%

* Transcanada Corp2.0%

* Humana Inc1.7%

* Itc Hldgs Corp1.7%

* Agl Res Inc1.6%

* Questar Corp1.6%

* Ingram Micro Inc1.6%

* Heartland Pmt Sys Inc1.6%

* Firstmerit Corp1.5%

* Piedmont Nat Gas Inc1.5%

* Boardwalk Pipeline Partners1.5%

* Pioneer Nat Res Co1.5%

Holdings

As of Mar 31, 2016. This is the first quarter on file, so nothing is compared yet.

Positions, sorted by share of the portfolio
#	Holding		Value	Shares	Price	Shares over time
1	* E M C Corp MassCOM	5.1%	$329.3M	12.4M	$26.65
2	* Time Warner Cable IncCOM	5.0%	$326.9M	1.6M	$204.62
3	* Starwood Hotels&Resorts WrldCOM	4.1%	$264.6M	3.3M	$79.75
4	* Allergan PlcSHS	3.2%	$207.8M	775,453	$268.03
5	* Ishares TrPUTMSCI EMG MKT ETF	3.2%	$205.5M	6.0Munderlying	—
6	SandiskCOM	2.7%	$175.7M	2.3M	$76.08
7	Rite Aid CorpCOM	2.6%	$168.6M	20.7M	$8.15
8	* Baxalta IncCOM	2.4%	$157.9M	3.9M	$40.40
9	* Columbia Pipeline Group IncCOM	2.1%	$138.1M	5.5M	$25.10
10	* Cigna CorporationCOM	2.0%	$131.5M	958,393	$137.24
11	* Jarden CorpCOM	2.0%	$130.1M	2.2M	$58.95
12	* Transcanada CorpCOM	2.0%	$129.2M	3.3M	$39.31
13	KLACOM	1.7%	$112.6M	1.5M	$72.81
14	* Humana IncCOM	1.7%	$111.4M	608,916	$182.95
15	IntelSDCV 3.250% 8/0	1.7%	$110.2M	69.2M	$1.59
16	* Itc Hldgs CorpCOM	1.7%	$107.2M	2.5M	$43.57
17	* Agl Res IncCOM	1.6%	$105.1M	1.6M	$65.14
18	* Questar CorpCOM	1.6%	$104.4M	4.2M	$24.80
19	* Ingram Micro IncCL A	1.6%	$104.3M	2.9M	$35.91
20	* Heartland Pmt Sys IncCOM	1.6%	$103.1M	1.1M	$96.57
21	* Firstmerit CorpCOM	1.5%	$100.6M	4.8M	$21.05
22	* Piedmont Nat Gas IncCOM	1.5%	$99.8M	1.7M	$59.83
23	* Boardwalk Pipeline PartnersUT LTD PARTNER	1.5%	$99.5M	6.7M	$14.74
24	* Pioneer Nat Res CoCOM	1.5%	$99.0M	703,309	$140.74
25	* Atmel CorpCOM	1.5%	$97.9M	12.1M	$8.12
	Total · 374 positions	100%	$6.49B

The filing on SEC EDGAR ↗

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.

$30.00B$15.00B$0

Q1 201642 quartersQ2 2026

Every quarter's filing

Each quarter's 13F filing, newest first
Quarter	Filed	Reported value	Positions	Filing
Q2 2026	Aug 14, 2026	$10.96B+11%	1,134	SEC ↗
Q1 2026	May 13, 2026	$9.84B−4%	1,130	SEC ↗
Q4 2025	Feb 17, 2026	$10.21B−38%	896	SEC ↗
Q3 2025	Nov 13, 2025	$16.50B−20%	853	SEC ↗
Q2 2025	Aug 12, 2025	$20.65B+171%	870	SEC ↗
Q1 2025	May 15, 2025	$7.61B+75%	717	SEC ↗
Q4 2024	Feb 11, 2025	$4.36B−6%	589	SEC ↗
Q3 2024	Nov 13, 2024	$4.62B−4%	507	SEC ↗
Q2 2024	Aug 14, 2024	$4.80B+7%	497	SEC ↗
Q1 2024	May 15, 2024	$4.47B+13%	363	SEC ↗
Q4 2023	Feb 13, 2024	$3.94B+1%	363	SEC ↗
Q3 2023	Nov 14, 2023	$3.92B−14%	435	SEC ↗
Q2 2023	Aug 11, 2023	$4.56B−11%	476	SEC ↗
Q1 2023	May 15, 2023	$5.13B−13%	597	SEC ↗
Q4 2022	Feb 14, 2023	$5.91B−18%	767	SEC ↗
Q3 2022	Nov 14, 2022	$7.21B−25%	1,356	SEC ↗
Q2 2022	Aug 15, 2022	$9.67B+3%	1,661	SEC ↗
Q1 2022	May 16, 2022	$9.37B−6%	1,308	SEC ↗
Q4 2021	Feb 14, 2022	$9.96B+1%	1,351	SEC ↗
Q3 2021	Jan 14, 2022 (amended)	$9.82B−7%	1,287	SEC ↗
Q2 2021	Aug 6, 2021	$10.56B+2%	1,173	SEC ↗
Q1 2021	May 14, 2021	$10.40B+47%	1,026	SEC ↗
Q4 2020	Feb 12, 2021	$7.08B+25%	693	SEC ↗
Q3 2020	Nov 16, 2020	$5.66B+67%	640	SEC ↗
Q2 2020	Aug 14, 2020	$3.39B−18%	418	SEC ↗
Q1 2020	May 15, 2020	$4.15B−13%	456	SEC ↗
Q4 2019	Feb 13, 2020	$4.79B+22%	524	SEC ↗
Q3 2019	Nov 14, 2019	$3.93B−21%	470	SEC ↗
Q2 2019	Aug 14, 2019	$5.00B+29%	435	SEC ↗
Q1 2019	May 15, 2019	$3.89B−5%	416	SEC ↗
Q4 2018	Feb 14, 2019	$4.08B−26%	273	SEC ↗
Q3 2018	Feb 14, 2019 (amended)	$5.54B−16%	490	SEC ↗
Q2 2018	Aug 14, 2018 (amended)	$6.56B+13%	485	SEC ↗
Q1 2018	May 15, 2018 (amended)	$5.80B+3%	556	SEC ↗
Q4 2017	Feb 14, 2018 (amended)	$5.62B+2%	674	SEC ↗
Q3 2017	Nov 14, 2017 (amended)	$5.52B−15%	703	SEC ↗
Q2 2017	Aug 14, 2017 (amended)	$6.52B−7%	768	SEC ↗
Q1 2017	May 15, 2017 (amended)	$7.02B+1,897%	703	SEC ↗
Q4 2016	Aug 14, 2017 (amended)	$351.5M−95%	5	SEC ↗
Q3 2016	Nov 14, 2016 (amended)	$7.03B+17%	540	SEC ↗
Q2 2016	Aug 15, 2016 (amended)	$6.02B−7%	351	SEC ↗
Q1 2016	May 16, 2016 (amended)	$6.49B	374	SEC ↗