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Magnetar Financial LLC — 13F Holdings & Portfolio

CIK 1352851 · latest 13F-HR filed 2026-08-14

Backtest portfolio

Magnetar Financial LLC manages $10.96B in 13F-reported U.S. long-equity assets across 1,713 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are CRWV (47.26%), HPEPC (0.59%), JD (0.56%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 496 new positions, exited 492, added to 259, and trimmed 189.

AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.

Filer Information
Address
1603 ORRINGTON AVE.
13TH FLOOR
EVANSTON, IL 60201
Phone
(847) 905-4400
Filing Manager
Magnetar Financial LLC
EVANSTON, IL
Signatory
Hayley Stein
Chief Compliance Officer
Loading holdings…
AUM

$10.96B

Long-equity book

Holdings

1,713

Distinct positions

Period

2026-06-30

Filed 2026-08-14

Q/Q Activity

+496 / −492 / ↑259 / ↓189

vs 2026-03-31

Firm Profile & Key People
Name Title / Status Ownership Type

Top Adds (vs prior quarter)

  • COREWEAVE INC$437.3M +9.2%
  • ROKU INC$69.7M +20210.3%
  • PAYONEER GLOBAL INC$50.6M +79462.2%
  • ORACLE CORP$34.3M +115.0%
  • ALIBABA GROUP HLDG LTD$29.0M +63.7%
Show all 259 →

Top Trims

  • ALLIED GOLD CORP-$28.0M -35.9%
  • PG&E CORP-$23.6M -38.6%
  • VEECO INSTRS INC DEL-$21.9M -51.0%
  • TRIP COM GROUP LTD-$13.9M -19.4%
  • LIBERTY BROADBAND CORP-$11.9M -32.8%
Show all 189 →

New Positions

  • DOMINION ENERGY INC$83.3M
  • ALPHABET INC$75.5M
  • FIRSTENERGY CORP$61.7M
  • GAMESTOP CORP$56.8M
  • BIO-TECHNE CORP$53.8M
Show all 496 →

Exited Positions

  • AIR LEASE CORP$87.2M
  • PROASSURANCE CORP$80.3M
  • MASIMO CORP$76.0M
  • CSG SYS INTL INC$64.5M
  • AMICUS THERAPEUTIC$57.6M
Show all 492 →
All Holdings

Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).

# Issuer Symbol CUSIP Value Weight Shares Type
1 COREWEAVE INC CRWV 21873S108 $5.18B 47.26% 52,062,927 SH
2 HEWLETT PACKARD ENTERPRISE C HPEPC 42824C208 $65.0M 0.59% 555,276 SH
3 JD.COM INC JD 47215PAJ5 $61.8M 0.56% 62,842,000 PRN
4 KENVUE INC KVUE 49177J102 $60.9M 0.56% 3,189,035 SH
5 WEBSTER FINL CORP WBS 947890109 $60.7M 0.55% 793,833 SH
6 CHART INDS INC GTLS 16115Q308 $60.2M 0.55% 288,061 SH
7 ALPHABET INC GOOGM 02079K404 $59.2M 0.54% 1,173,731 SH
8 NORFOLK SOUTHN CORP NSC 655844108 $58.8M 0.54% 186,836 SH
9 DOMINION ENERGY INC D 25746U109 $57.8M 0.53% 846,088 SH
10 TXNM ENERGY INC TXNM 69349H107 $56.4M 0.51% 993,884 SH
11 PENUMBRA INC PEN 70975L107 $56.3M 0.51% 178,318 SH
12 ALIBABA GROUP HLDG LTD BABAF 01609WBG6 $56.1M 0.51% 47,570,000 PRN
13 TECK RESOURCES LTD TECK 878742204 $54.4M 0.50% 914,492 SH
14 WARNER BROS DISCOVERY INC WBD 934423104 $51.5M 0.47% 1,932,537 SH
15 MICROCHIP TECHNOLOGY INC. MCHPP 595017302 $51.0M 0.47% 662,455 SH
16 ORACLE CORP ORCLPD 68389X204 $50.3M 0.46% 1,118,180 SH
17 ROKU INC ROKU 77543R102 $48.3M 0.44% 349,403 SH
18 DIGITALBRIDGE GROUP INC DBRG 25401T603 $46.9M 0.43% 2,971,134 SH
19 TRIP COM GROUP LTD TRPCF 89677QAB3 $43.9M 0.40% 44,473,000 PRN
20 FIRSTENERGY CORP FE 337932AT4 $43.2M 0.39% 39,515,000 PRN
21 NATIONAL STORAGE AFFILIATES NSA 637870106 $37.9M 0.35% 852,748 SH
22 GAMESTOP CORP GME 36467WAE9 $37.8M 0.34% 36,976,000 PRN
23 SILICON LABORATORIES INC SLAB 826919102 $37.4M 0.34% 171,317 SH
24 BIO-TECHNE CORP TECH 09073M104 $37.1M 0.34% 524,994 SH
25 ESSENTIAL UTILS INC WTRG 29670G102 $36.7M 0.34% 959,086 SH
26 APOGEE THERAPEUTICS INC APGE 03770N101 $36.5M 0.33% 275,015 SH
27 LIVERAMP HLDGS INC RAMP 53815P108 $36.0M 0.33% 957,386 SH
28 QORVO INC QRVO 74736K101 $35.9M 0.33% 385,399 SH
29 PAYONEER GLOBAL INC PAYO 70451X104 $34.9M 0.32% 4,899,059 SH
30 CAESARS ENTERTAINMENT INC NE CZR 12769G100 $34.6M 0.32% 1,145,249 SH
31 ALLIED GOLD CORP AAUC 01921D204 $34.1M 0.31% 1,436,801 SH
32 CHURCHILL CAP CORP XI CCXI G2131A108 $33.5M 0.31% 1,918,525 SH
33 UNIFIRST CORP MASS UNF 904708104 $32.1M 0.29% 121,275 SH
34 ARCOSA INC ACA 039653100 $31.7M 0.29% 217,927 SH
35 ALLIANT ENERGY CORP LNT 018802AE8 $31.0M 0.28% 28,323,000 PRN
36 SKYWATER TECHNOLOGY INC SKYT 83089J108 $29.1M 0.27% 835,465 SH
37 CHURCHILL CAP CORP XII CXII G2131M102 $28.8M 0.26% 2,700,000 SH
38 NORFOLK SOUTHN CORP NSC 655844108 $27.8M 0.25% 88,379 SH
39 WEBSTER FINL CORP WBS 947890109 $27.7M 0.25% 362,865 SH
40 KENVUE INC KVUE 49177J102 $27.3M 0.25% 1,426,309 SH
41 CHART INDS INC GTLS 16115Q308 $27.2M 0.25% 130,249 SH
42 DRUGS MADE IN AMER ACQ II CO DMII G2851K104 $27.2M 0.25% 2,700,000 SH
43 ORGANON & CO OGN 68622V106 $26.5M 0.24% 1,957,077 SH
44 TXNM ENERGY INC TXNM 69349H107 $25.8M 0.24% 454,336 SH
45 DOMINION ENERGY INC D 25746U109 $25.5M 0.23% 373,306 SH
46 EQV VENTURES AC CORP. II EVAC G3106Q102 $25.4M 0.23% 2,499,993 SH
47 NOVANTA INC NOVTU 67000B203 $25.4M 0.23% 371,388 SH
48 GENERAL CATALYST GBL RESIL M GCGR G3793T104 $25.2M 0.23% 2,500,000 SH
49 BRUKER CORP BRKRP 116794207 $25.0M 0.23% 55,918 SH
50 VALARIS LTD VAL G9460G101 $24.9M 0.23% 342,552 SH
Filing History
Period Filed AUM Holdings Accession
2026-06-30 2026-08-14 $10.96B 1,713 0001104659-26-096490
2026-03-31 2026-05-13 $9.84B 1,755 0001104659-26-059841
2025-12-31 2026-02-17 $10.21B 1,486 0001104659-26-015538
2025-09-30 2025-11-13 $16.50B 1,474 0001104659-25-111094