Stock Ownership/OII

OCEANEERING INTL INC (OII): Ownership & Insider Activity

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

Reported Holders
17
13F filers
Aggregate Value
$80.7M
Across holders
Last Price
$50.46
2026-08-24
Sector
Energy
GICS
Quarterly fund activity12 increased5 reduced4 exited
Full exits: BALYASNY ASSET MANAGEMENT LLC, CITADEL ADVISORS LLC, Qube Research & Technologies Ltd, Man Group plc
Institutional Holders of OII
↗
17 holders
Manager⇅Type⇅Shares⇅Market Value▼% of Total⇅% of Portfolio⇅Action⇅QoQ Change⇅Quarter⇅
Fisher Asset Management, LLC
CIK 0000850529
Institutional Manager635K$25.7M31.9%0.0%Reduced$-6.4MQ2 2026
AQR CAPITAL MANAGEMENT LLC
CIK 0001167557
Hedge Fund449K$18.2M22.5%0.0%Added+$16.3MQ2 2026
GAMCO INVESTORS, INC. ET AL
CIK 0000807249
Institutional Manager304K$12.3M15.3%0.1%Reduced$-1.4MQ2 2026
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
Hedge Fund155K$6.3M7.8%0.0%Added—Q2 2026
MARSHALL WACE, LLP
CIK 0001318757
Hedge Fund105K$4.2M5.3%0.0%Added—Q2 2026
Gotham Asset Management, LLC
CIK 0001510387
Hedge Fund79K$3.2M4.0%0.0%Added+$522KQ2 2026
Squarepoint Ops LLC
CIK 0001642575
Hedge Fund62K$2.5M3.1%0.0%Added+$1.1MQ2 2026
RENAISSANCE TECHNOLOGIES LLC
CIK 0001037389
Hedge Fund45K$1.8M2.2%0.0%Reduced$-1.6MQ2 2026
CAXTON ASSOCIATES LLP
CIK 0002051323
Hedge Fund33K$1.3M1.6%0.0%Added+$193KQ2 2026
Fulcrum Asset Management LLP
CIK 0001353395
Hedge Fund34K$1.3M1.6%0.1%Reduced$-209KQ2 2026
Fisher Asset Management, LLCReduced
Institutional Manager
$25.7M· 31.9% of total· 0.0% port· 635K sh· $-6.4M QoQ· Q2 2026
AQR CAPITAL MANAGEMENT LLCAdded
Hedge Fund
$18.2M· 22.5% of total· 0.0% port· 449K sh· +$16.3M QoQ· Q2 2026
GAMCO INVESTORS, INC. ET ALReduced
Institutional Manager
$12.3M· 15.3% of total· 0.1% port· 304K sh· $-1.4M QoQ· Q2 2026
MILLENNIUM MANAGEMENT LLCAdded
Hedge Fund
$6.3M· 7.8% of total· 0.0% port· 155K sh· — QoQ· Q2 2026
MARSHALL WACE, LLPAdded
Hedge Fund
$4.2M· 5.3% of total· 0.0% port· 105K sh· — QoQ· Q2 2026
Gotham Asset Management, LLCAdded
Hedge Fund
$3.2M· 4.0% of total· 0.0% port· 79K sh· +$522K QoQ· Q2 2026
Squarepoint Ops LLCAdded
Hedge Fund
$2.5M· 3.1% of total· 0.0% port· 62K sh· +$1.1M QoQ· Q2 2026
RENAISSANCE TECHNOLOGIES LLCReduced
Hedge Fund
$1.8M· 2.2% of total· 0.0% port· 45K sh· $-1.6M QoQ· Q2 2026
CAXTON ASSOCIATES LLPAdded
Hedge Fund
$1.3M· 1.6% of total· 0.0% port· 33K sh· +$193K QoQ· Q2 2026
Fulcrum Asset Management LLPReduced
Hedge Fund
$1.3M· 1.6% of total· 0.1% port· 34K sh· $-209K QoQ· Q2 2026
Holocene Advisors, LPAdded
Hedge Fund
$1.0M· 1.3% of total· 0.0% port· 25K sh· — QoQ· Q2 2026
CAPSTONE INVESTMENT ADVISORS, LLCAdded
Hedge Fund
$1.0M· 1.3% of total· 0.0% port· 25K sh· — QoQ· Q2 2026
TWO SIGMA INVESTMENTS, LPAdded
Hedge Fund
$595K· 0.7% of total· 0.0% port· 15K sh· — QoQ· Q2 2026
SHAW D E & CO INCAdded
Hedge Fund
$367K· 0.5% of total· 0.0% port· 9K sh· — QoQ· Q2 2026
Grantham, Mayo, Van Otterloo & Co. LLCAdded
Institutional Manager
$293K· 0.4% of total· 0.0% port· 7K sh· — QoQ· Q2 2026
ExodusPoint Capital Management, LPAdded
Hedge Fund
$277K· 0.3% of total· 0.0% port· 7K sh· — QoQ· Q2 2026
Rockefeller Capital Management L.P.Reduced
Hedge Fund
$210K· 0.3% of total· 0.0% port· 5K sh· +$203K QoQ· Q2 2026
1–10 of 17
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