Q2 2026 13F · SEC CIK 1352851

Magnetar Financial LLC

Hedge fundFiled 2026-08-14 for Q2 2026. Open the filing ↗ · All SEC filings ↗

Reported 13F value: $10.5B
Reported positions: 1,120
Top holdings a year, 3 yrs: +10.2%
Assets under management: $32.0B

Magnetar Financial LLC is a hedge fund that reported 1,120 positions worth $10.5B in its Q2 2026 13F, filed 2026-08-14. Its largest holdings were Coreweave Inc (CRWV, 49.5%), Hewlett Packard Enterprise C (0.8%), Webster Finl Corp (WBS, 0.8%). A portfolio copying its top holdings returned 10.2% a year over the last 3 years, against 20.4% for the S&P 500.

Magnetar Financial LLC holdings largest 50 of 1,120 positions.

Weights are shares of the filer's total reported 13F value, compared with Q1 2026. Share changes may reflect splits; weight changes also reflect price moves. A 13F shows long US-listed positions only, up to 135 days after the fact.

Magnetar Financial LLC 13F holdings
Stock	% of 13F value	Q1 2026	Shares	Share change	Reported value
CRWVCoreweave Inc	49.5%	49.6%	52,062,927	-24.1%	$5.2B
42824C208Hewlett Packard Enterprise C	0.8%	0.6%	760,010	-17.8%	$89.0M
WBSWebster Finl Corp	0.8%	0.8%	1,156,698	+1.8%	$88.4M
KVUEKenvue Inc	0.8%	0.8%	4,615,344	+0.2%	$88.2M
GTLSChart Inds Inc	0.8%	0.9%	418,310	-0.5%	$87.4M
NSCNorfolk Southn Corporation	0.8%	0.8%	275,215	+0.0%	$86.6M
DDominion Energy Inc	0.8%	—	1,219,394	—	$83.3M
TXNMTxnm Energy Inc	0.8%	0.9%	1,448,220	-1.8%	$82.2M
PENPenumbra, Inc.	0.8%	0.9%	255,841	+1.8%	$80.8M
TECKTeck Resources Ltd	0.8%	0.8%	1,330,207	-11.2%	$79.1M
MCHPPMicrochip Technology Inc.	0.7%	0.6%	982,230	-4.2%	$75.6M
GOOGMAlphabet Inc	0.7%	—	1,496,367	—	$75.5M
WBDWarner Bros Discovery Inc	0.7%	0.9%	2,747,884	-8.9%	$73.3M
ROKURoku Inc	0.7%	—	507,080	—	$70.0M
DBRGDigitalbridge Group Inc	0.6%	0.7%	4,118,704	-2.3%	$65.0M
68389X204Oracle Corp	0.6%	0.3%	1,425,420	+119.3%	$64.1M
NSANational Storage Affiliates	0.5%	0.5%	1,236,534	+0.7%	$55.0M
SLABSilicon Laboratories Inc	0.5%	0.5%	251,225	+2.2%	$54.9M
TECHBio-Techne Corp	0.5%	—	761,911	—	$53.8M
APGEApogee Therapeutics Inc	0.5%	—	399,123	—	$53.0M
12769G100Caesars Entertainment Inc Ne	0.5%	—	1,746,938	—	$52.7M
RAMPLiveramp Holdings Inc	0.5%	—	1,379,116	—	$51.9M
QRVOQorvo Inc	0.5%	0.4%	548,149	+1.3%	$51.1M
PAYOPayoneer Global Inc	0.5%	—	7,109,868	—	$50.6M
AAUCAllied Gold Corp	0.5%	0.8%	2,108,808	-16.3%	$50.1M
BRKRPBruker Corp	0.5%	—	108,963	—	$48.6M
WTRGEssential Utils Inc Com	0.5%	0.5%	1,258,246	+4.5%	$48.2M
NOVTUNovanta Inc	0.5%	0.3%	700,563	+40.1%	$47.8M
UNFUnifirst Corp Mass	0.4%	0.5%	174,619	+1.6%	$46.2M
ACAArcosa Inc	0.4%	—	316,267	—	$46.0M
SKYTSkywater Technology Inc	0.4%	0.3%	1,184,635	+0.8%	$41.2M
OGNOrganon & Co	0.4%	—	2,810,019	—	$38.0M
VALValaris Ltd	0.3%	0.5%	494,010	+1.4%	$35.9M
CCXIChurchill Cap Corp Xi	0.3%	0.3%	1,918,525	-28.9%	$33.5M
STELStellar Bancorp Inc	0.3%	0.3%	812,216	+0.0%	$31.9M
SMCIPSuper Micro Computer Inc	0.3%	—	570,680	—	$29.2M
IMXIInternational Money Express	0.3%	0.3%	2,008,234	+4.4%	$29.0M
CXIIChurchill Cap Corp Xii	0.3%	—	2,700,000	—	$28.8M
DMIIDrugs Made in America Acquisition II Cor	0.3%	0.3%	2,700,000	+0.0%	$27.2M
LEGTLeggett & Platt Inc	0.3%	—	2,263,253	—	$26.5M
65339F655NextEra Energy 7.375 15-Feb-2029 PEPS	0.3%	0.2%	550,000	+22.2%	$26.3M
AXTAAxalta Coating Sys Ltd	0.2%	0.2%	747,203	+0.8%	$25.6M
EVACEqv Ventures Ac Corp. II	0.2%	0.3%	2,499,993	+0.0%	$25.4M
GCGRGeneral Ca	0.2%	—	2,500,000	—	$25.2M
LBRDKLiberty Broadband Corp	0.2%	0.4%	735,491	+1.6%	$24.5M
RPTRithm Ppty Tr Inc	0.2%	0.2%	1,639,033	+0.0%	$23.6M
TACHTitan Acquisition Corp	0.2%	0.2%	2,200,000	+0.0%	$22.9M
TALKTalkspace Inc	0.2%	0.2%	4,349,317	+2.1%	$22.6M
CAIICollective Acquisition Corp II	0.2%	—	2,178,000	—	$21.6M
LPBBLaunch Two Acquisition Corp.	0.2%	0.2%	1,980,000	+0.0%	$21.2M

What Magnetar Financial LLC bought and sold in Q2 2026, against Q1 2026.

New positions

Q1 2026's filing was too long to tell new positions apart.

Added to

Oracle Corp+119.3% shares
NOVTU Novanta Inc+40.1% shares
NextEra Energy 7.375 15-Feb-2029 PEPS+22.2% shares

Reduced

CCXI Churchill Cap Corp Xi-28.9% shares
CRWV Coreweave Inc-24.1% shares
Hewlett Packard Enterprise C-17.8% shares
AAUC Allied Gold Corp-16.3% shares
TECK Teck Resources Ltd-11.2% shares
WBD Warner Bros Discovery Inc-8.9% shares

Left the top 50

AL Air Lease Corpwas 0.9%
PRA Proassurance Corpwas 0.8%
MASI Masimo Corpwas 0.8%
CSGS Csg Systems International Incwas 0.7%
FOLD Amicus Therapeuticwas 0.6%
TPH Tri Pointe Homes Incwas 0.6%
ACLX Arcellx Incwas 0.5%
VECO Veeco Instrs Inc Delwas 0.4%

Share counts compared with the Q1 2026 13F; a split also changes share counts. The latest filing lists more than 50 positions, so a position that left the top 50 may still be held.

How the holdings did against the S&P 500.

1 year: +5.0% /yr; S&P 500 +20.1%
3 years: +10.2% /yr; S&P 500 +20.4%
5 years: +8.1% /yr; S&P 500 +14.8%

A portfolio of the filer's 20 largest 13F positions, weighted by value, bought the trading day after each 13F was filed and held until the next one was: what copying this filer could have earned. 13Fs show long US-listed positions only, so this is an estimate of the stock picks, not the fund's reported returns.

Reported 13F value by quarter.

13F value by quarter
Quarter	13F value	Positions
Q2 2026	$10.5B	1,120
Q1 2026	$9.6B	1,122
Q4 2025	$9.7B	881
Q3 2025	$15.8B	832
Q2 2025	$20.0B	846
Q1 2025	$7.1B	696
Q4 2024	$3.7B	562
Q3 2024	$3.9B	475
Q2 2024	$4.2B	458
Q1 2024	$3.9B	321
Q4 2023	$3.3B	308
Q3 2023	$3.4B	398

Questions about Magnetar Financial LLC's portfolio

What stocks does Magnetar Financial LLC own?

Magnetar Financial LLC's latest 13F, for Q2 2026 and filed Aug 14, 2026, lists 1,120 positions worth $10.5B. The largest are Coreweave Inc (CRWV) at 49.5%, Hewlett Packard Enterprise C at 0.8%, Webster Finl Corp (WBS) at 0.8%, Kenvue Inc (KVUE) at 0.8% and Chart Inds Inc (GTLS) at 0.8%.

What did Magnetar Financial LLC buy last quarter?

In Q2 2026, Magnetar Financial LLC added Oracle Corp (+119.3% shares), Novanta Inc (NOVTU) (+40.1% shares) and NextEra Energy 7.375 15-Feb-2029 PEPS (+22.2% shares), compared with its Q1 2026 filing.

What did Magnetar Financial LLC sell last quarter?

In Q2 2026, Magnetar Financial LLC cut from its top 50 Air Lease Corp (AL), cut from its top 50 Proassurance Corp (PRA), cut from its top 50 Masimo Corp (MASI), cut from its top 50 Csg Systems International Inc (CSGS), cut from its top 50 Amicus Therapeutic (FOLD), Churchill Cap Corp Xi (CCXI) (-28.9% shares), Coreweave Inc (CRWV) (-24.1% shares) and Hewlett Packard Enterprise C (-17.8% shares), compared with its Q1 2026 filing.

How has Magnetar Financial LLC's portfolio performed?

A portfolio copying Magnetar Financial LLC's 20 largest 13F holdings each quarter, from the day each filing was public, returned +10.2% a year over the last 3 years, against +20.4% for the S&P 500. Over 1 year: +5.0% against +20.1%. Over 5 years: +8.1% a year against +14.8%.

When is Magnetar Financial LLC's next 13F filing due?

13F filings are due 45 days after each quarter ends. Magnetar Financial LLC's filing for the quarter ending Sep 30, 2026 is due by Nov 14, 2026; this page updates the day after it is published.

How much money does Magnetar Financial LLC manage?

Magnetar Financial LLC reported $32.0B of regulatory assets under management on its latest SEC Form ADV. Its 13F, which covers only US-listed stocks and options, totals $10.5B.