Stock Ownership/MAGN

MAGNERA CORP (MAGN): Ownership & Insider Activity

Hedge funds and institutional managers reporting a position in MAGN · Materials. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.

Reported Holders
12
13F filers
Aggregate Value
$36.2M
Across holders
Last Price
$12.54
2026-09-04
Sector
Materials
GICS
Quarterly fund activity7 increased4 reduced4 exited
Full exits: MILLENNIUM MANAGEMENT LLC, MARSHALL WACE, LLP, Magnetar Financial LLC, Walleye Capital LLC
Institutional Holders of MAGN
↗
12 holders
Manager⇅Type⇅Shares⇅Market Value▼% of Total⇅% of Portfolio⇅Action⇅QoQ Change⇅Quarter⇅
SHAW D E & CO INC
CIK 0001009207
Hedge Fund790K$9.3M25.6%0.0%Reduced$-1.3MQ2 2026
Verition Fund Management LLC
CIK 0001454027
Hedge Fund607K$7.1M19.7%0.0%Added+$2.1MQ2 2026
AQR CAPITAL MANAGEMENT LLC
CIK 0001167557
Hedge Fund480K$5.6M15.6%0.0%Added+$5.6MQ2 2026
Ancora Advisors, LLC
CIK 0001446114
Hedge Fund371K$4.4M12.0%0.1%Added+$4.3MQ2 2026
Squarepoint Ops LLC
CIK 0001642575
Hedge Fund217K$2.6M7.0%0.0%Added+$463KQ2 2026
Man Group plc
CIK 0001637460
Hedge Fund207K$2.4M6.7%0.0%Added+$255KQ2 2026
TUDOR INVESTMENT CORP ET AL
CIK 0000923093
Hedge Fund147K$1.7M4.8%0.0%Reduced$-1.4MQ2 2026
CITADEL ADVISORS LLC
CIK 0001423053
Hedge Fund135K$1.6M4.4%0.0%Reduced$-5.9MQ2 2026
BALYASNY ASSET MANAGEMENT LLC
CIK 0001218710
Hedge Fund81K$955K2.6%0.0%Added—Q2 2026
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
Hedge Fund25K$291K0.8%0.0%Added+$15KQ2 2026
SHAW D E & CO INCReduced
Hedge Fund
$9.3M· 25.6% of total· 0.0% port· 790K sh· $-1.3M QoQ· Q2 2026
Verition Fund Management LLCAdded
Hedge Fund
$7.1M· 19.7% of total· 0.0% port· 607K sh· +$2.1M QoQ· Q2 2026
AQR CAPITAL MANAGEMENT LLCAdded
Hedge Fund
$5.6M· 15.6% of total· 0.0% port· 480K sh· +$5.6M QoQ· Q2 2026
Ancora Advisors, LLCAdded
Hedge Fund
$4.4M· 12.0% of total· 0.1% port· 371K sh· +$4.3M QoQ· Q2 2026
Squarepoint Ops LLCAdded
Hedge Fund
$2.6M· 7.0% of total· 0.0% port· 217K sh· +$463K QoQ· Q2 2026
Man Group plcAdded
Hedge Fund
$2.4M· 6.7% of total· 0.0% port· 207K sh· +$255K QoQ· Q2 2026
TUDOR INVESTMENT CORP ET ALReduced
Hedge Fund
$1.7M· 4.8% of total· 0.0% port· 147K sh· $-1.4M QoQ· Q2 2026
CITADEL ADVISORS LLCReduced
Hedge Fund
$1.6M· 4.4% of total· 0.0% port· 135K sh· $-5.9M QoQ· Q2 2026
BALYASNY ASSET MANAGEMENT LLCAdded
Hedge Fund
$955K· 2.6% of total· 0.0% port· 81K sh· — QoQ· Q2 2026
TWO SIGMA INVESTMENTS, LPAdded
Hedge Fund
$291K· 0.8% of total· 0.0% port· 25K sh· +$15K QoQ· Q2 2026
Brevan Howard Capital Management LPAdded
Hedge Fund
$249K· 0.7% of total· 0.0% port· 21K sh· — QoQ· Q2 2026
Rockefeller Capital Management L.P.Reduced
Hedge Fund
$8K· 0.0% of total· 0.0% port· 686 sh· $-7K QoQ· Q2 2026
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