Stock Ownership/OSG

OCTAVE SPECIALTY (OSG): Ownership & Insider Activity

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

Reported Holders
9
13F filers
Aggregate Value
$14.1M
Across holders
Last Price
$4.53
2026-08-24
Sector
Financials
GICS
Quarterly fund activity3 increased5 reduced5 exited
Full exits: Verition Fund Management LLC, Point72 Asset Management, L.P., Squarepoint Ops LLC, Brevan Howard Capital Management LP, Walleye Capital LLC
Institutional Holders of OSG
↗
9 holders
Manager⇅Type⇅Shares⇅Market Value▼% of Total⇅% of Portfolio⇅Action⇅QoQ Change⇅Quarter⇅
MARSHALL WACE, LLP
CIK 0001318757
Hedge Fund602K$3.8M26.6%0.0%Reduced$-8.9MQ2 2026
Bracebridge Capital, LLC
CIK 0001426486
Hedge Fund579K$3.6M25.6%0.1%Unchanged+$0Q2 2026
CITADEL ADVISORS LLC
CIK 0001423053
Hedge Fund423K$2.6M18.7%0.0%Reduced+$1.7MQ2 2026
AQR CAPITAL MANAGEMENT LLC
CIK 0001167557
Hedge Fund230K$1.4M10.1%0.0%Added$-59KQ2 2026
TUDOR INVESTMENT CORP ET AL
CIK 0000923093
Hedge Fund216K$1.4M9.5%0.0%Added+$352KQ2 2026
RENAISSANCE TECHNOLOGIES LLC
CIK 0001037389
Hedge Fund117K$731K5.2%0.0%Reduced$-690KQ2 2026
Man Group plc
CIK 0001637460
Hedge Fund67K$415K2.9%0.0%Added—Q2 2026
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
Hedge Fund20K$122K0.9%0.0%Reduced$-721KQ2 2026
SHAW D E & CO INC
CIK 0001009207
Hedge Fund12K$76K0.5%0.0%Reduced$-4KQ2 2026
MARSHALL WACE, LLPReduced
Hedge Fund
$3.8M· 26.6% of total· 0.0% port· 602K sh· $-8.9M QoQ· Q2 2026
Bracebridge Capital, LLCUnchanged
Hedge Fund
$3.6M· 25.6% of total· 0.1% port· 579K sh· +$0 QoQ· Q2 2026
CITADEL ADVISORS LLCReduced
Hedge Fund
$2.6M· 18.7% of total· 0.0% port· 423K sh· +$1.7M QoQ· Q2 2026
AQR CAPITAL MANAGEMENT LLCAdded
Hedge Fund
$1.4M· 10.1% of total· 0.0% port· 230K sh· $-59K QoQ· Q2 2026
TUDOR INVESTMENT CORP ET ALAdded
Hedge Fund
$1.4M· 9.5% of total· 0.0% port· 216K sh· +$352K QoQ· Q2 2026
RENAISSANCE TECHNOLOGIES LLCReduced
Hedge Fund
$731K· 5.2% of total· 0.0% port· 117K sh· $-690K QoQ· Q2 2026
Man Group plcAdded
Hedge Fund
$415K· 2.9% of total· 0.0% port· 67K sh· — QoQ· Q2 2026
MILLENNIUM MANAGEMENT LLCReduced
Hedge Fund
$122K· 0.9% of total· 0.0% port· 20K sh· $-721K QoQ· Q2 2026
SHAW D E & CO INCReduced
Hedge Fund
$76K· 0.5% of total· 0.0% port· 12K sh· $-4K QoQ· Q2 2026
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