Stocks/Funds/CIK 1352851

Magnetar Financial LLC

index-like (500+ pos)
Quarterly 13F filings · Latest period 2026-03-31 · CIK 1352851
Assets
$9.54B
+32.4% YoY
Holdings
1,120
Lifetime alpha vs market
-3.27% annual
Average hold time
1.3 yr
median 0.8 yr

Quarterly history

Cum return +37% vs S&P +49% · α -13% lifetimeAUM $9.5B · peak $20.0BFlow $-465M (-5%)2016-062017-122019-062020-122022-062023-122025-062026-03
AUM ($B)fundS&P 500(gap = α)/ Flow in/out

Behavior signals (lifetime)

Dip response
-12.30%
trims when stocks drop
when a holding falls −10%+
Middle response
-8.66%
baseline attrition
Rally response
-25.45%
trims into rallies
when a holding rises +10%+

Top positions · 30

Ticker$ value% portYoYHold time
CRWVCoreWeave, Inc. Class A $4.74B49.7%+108.9%1.3 yr
ALAir Lease Corporation$87M0.9%+36.3%0.8 yr
GTLSChart Industries, Inc.$87M0.9%+43.2%1.8 yr
TXNMTXNM Energy, Inc.$86M0.9%+12.5%4.3 yr
PENPenumbra, Inc.$83M0.9%+22.8%2.3 yr
WBDWarner Bros. Discovery, $82M0.9%+155.9%1.3 yr
PRAProAssurance Corporation$80M0.8%+5.9%1.8 yr
KVUEKenvue Inc.$79M0.8%-25.0%1.3 yr
WBSWebster Financial Corpor$79M0.8%+38.5%1.5 yr
$78M0.8%0.3 yr
NSCNorfolk Southern Corpora$78M0.8%+23.6%5.0 yr
TECKTeck Resources Limited$78M0.8%+43.3%1.8 yr
MASIMasimo Corporation$76M0.8%+6.8%2.0 yr
0YY7.LDigitalBridge Group, Inc$65M0.7%1.0 yr
CSGSCSG Systems Internationa$65M0.7%+34.6%1.0 yr

Portfolio composition (YoY)

Industry mix
Software - Infrastructure50.9%+1.2pp$4.86B
Unknown15.3%+5.1pp$1.46B
Shell Companies6.0%+4.2pp$570M
Asset Management2.0%+1.5pp$191M
Semiconductors2.0%+1.1pp$187M
Biotechnology1.9%+1.1pp$181M
Financial - Conglomerates1.8%+1.6pp$170M
Medical - Devices1.8%+1.4pp$169M
Industrial - Machinery1.5%+0.6pp$141M
Banks - Regional1.3%+0.4pp$123M
Country
US80.4%-6.5pp
Unknown15.3%+5.1pp
KY1.3%+1.1pp
CA1.3%+0.8pp
BM0.6%+0.5pp
IL0.2%+0.1pp
GB0.2%-0.0pp
HK0.2%
Top 5: 53.3% · Top 10: 57.5% · Top 25: 66.6%

Winners

TickerPrev $PnLYoY %
CRWV$3.55B+3.87B108.9%
PRA$54M+0.00B5.9%
FOLD$0M+0.00B77.2%
TPH$0M+0.00B46.4%

Losers

TickerPrev $PnLYoY %

Top buys this quarter · 15

PEN Penumbra, Inc.+$81M
WBS Webster Financial Corporation+$78M
MASI Masimo Corporation+$75M
TPH Tri Pointe Homes, Inc.+$52M
SLAB Silicon Laboratories Inc.+$50M
VAL Valaris Limited+$47M
NSA National Storage Affiliates Tr+$46M
UNF UniFirst Corporation+$42M
THR Thermon Group Holdings, Inc.+$38M
APLS Apellis Pharmaceuticals, Inc.+$35M

Top sells this quarter · 15

TGNA TEGNA Inc.exit$87M
CFLT Confluent, Inc.exit$82M
EXAS Exact Sciences Corporationexit$74M
NGD New Gold Inc.exit$46M
CVS CVS Health Corporation$24M
TECK Teck Resources Limited$20M
NSC Norfolk Southern Corporation$20M
CCIX Churchill Capital Corp IX Ordiexit$20M
GTLS Chart Industries, Inc.$17M
AL Air Lease Corporation$16M

Quarterly history (TTM returns)

PeriodAUM# PosReturn (1yr)SPY (1yr)Alpha (1yr)Flow
2026-03-31$9.54B1120+5.43%-4.37%+9.80%-0.46B
2025-12-31$9.49B850-38.22%+2.66%-40.89%-0.24B
2025-09-30$15.76B831-13.48%+8.12%-21.60%-1.57B
2025-06-30$20.03B845+10.78%+12.82B
2025-03-31$7.21B696-4.65%+8.30%-12.95%+3.52B
2024-12-31$3.82B565+7.76%+24.89%-17.12%+0.18B
2024-09-30$3.88B471+21.83%+36.04%-14.20%-0.79B
2024-06-30$4.37B466+11.15%+24.49%-13.34%+0.57B
2024-03-31$3.87B318+23.58%+29.62%-6.04%+0.08B
2023-12-31$3.46B317+9.10%+26.18%-17.07%-0.35B
2023-09-30$3.59B405+11.74%+21.57%-9.83%-0.45B
2023-06-30$4.15B433+57.71%+19.42%+38.29%-1.11B
2023-03-31$4.81B559+33.39%-7.82%+41.21%-0.58B
2022-12-31$5.57B728+8.70%+7.56%+1.14%-1.90B
2022-09-30$6.88B1314+37.36%-4.93%+42.29%-4.48B
2022-06-30$8.27B1608-7.51%-16.11%+8.60%-0.02B