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Oceaneering International Inc

OII
Exchange
NYSE
Industry
Oil & Gas Field Services, NEC
SEC CIK
0000073756

In the last 90 days, Oceaneering International Inc insiders filed 0 open-market purchases and 4 sales; 376 institutions reported holding it in 13F filings for Q2 2026, worth $4.22B in total; no superinvestor holds it.

Q2 2026 vs. Q1 2026

How the institutions holding Oceaneering International Inc changed between Q1 2026 and Q2 2026.

All holders in Q2 2026All holders in Q1 2026

13F holders of OII: Q1 2026 compared with Q2 2026
MeasureQ1 2026Of which not filed for Q2 2026Q2 2026Change
Holders3675376+14
Shares101.7M321.4K104.3M+2.88M (+2.8%)
Value$3.61B$11.4M$4.22B+$628.9M (+17.5%)

5 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so the changes leave them out.

New holders (67)

Institutions that held Oceaneering International Inc at the end of Q2 2026 but not at the end of Q1 2026.

Institutions new to OII in Q2 2026
InstitutionSharesValue% of portfolio
Reinhart Partners, Inc.1,648,423$66.8M1.53%
Nomura Asset Management International Inc.1,330,080$53.9M0.08%
Hennessy Advisors Inc267,086$10.8M0.35%
Jupiter Topco LLC156,318$6.33M0.00%
Millennium Management LLC154,688$6.27M0.00%
Marshall Wace, LLP104,778$4.25M0.00%
Dockside LLC38,430$1.56M0.36%
Stifel Financial Corp35,208$1.43M0.00%
Mutual Advisors, LLC30,555$1.24M0.02%
Riverwater Partners LLC25,798$1.05M0.31%
Holocene Advisors, LP25,369$1.03M0.00%
Capstone Investment Advisors, LLC25,094$1.02M0.01%
Weiss Asset Management LP23,694$960.1K0.01%
Diametric Capital, LP23,592$955.9K0.10%
Zions Bancorporation, National Association17,888$724.8K0.04%
Evolve Private Wealth, LLC17,116$693.5K0.04%
Steel Peak Wealth Management LLC16,508$668.9K0.02%
Interval Partners, LP16,443$666.3K0.02%
Vise Technologies, Inc.16,231$657.7K0.01%
IMC-Chicago, LLC16,202$656.5K0.01%
Aquatic Capital Management LLC15,685$635.6K0.02%
Two Sigma Investments, LP14,681$594.9K0.00%
Massar Capital Management, LP11,420$462.7K0.16%
Sigma Planning Corp11,376$461.0K0.01%
Inceptionr LLC9,288$376.4K0.09%
D. E. Shaw & Co., Inc.9,049$366.7K0.00%
Stonebridge Financial Group, LLC8,400$340.0K0.05%
Grantham, Mayo, Van Otterloo & Co. LLC7,224$292.7K0.00%
Nykredit A/S7,092$287.4K0.00%
ExodusPoint Capital Management, LP6,827$276.6K0.00%
Brighton Jones LLC6,649$269.4K0.01%
Virginia Retirement Systems Et Al6,600$267.4K0.00%
Compass Financial Management LLC4,984$251.3K0.03%
Savant Capital, LLC6,199$234.8K0.00%
CIBC Bancorp USA Inc.5,788$234.5K0.00%
Sawgrass Asset Management LLC5,647$228.8K0.03%
Sequoia Financial Advisors, LLC5,528$224.0K0.00%
Prelude Capital Management, LLC5,473$221.8K0.02%
Verus Capital Partners, LLC5,420$219.6K0.01%
Commonwealth Equity Services, LLC5,155$208.9K0.00%
Bayforest Capital Ltd1,873$75.9K0.07%
Persistent Asset Partners Ltd1,635$66.3K0.02%
Optiver Holding B.V.876$35.5K0.00%
Graticule Asia Macro Advisors LLC315$12.8K0.00%
NBH Bank261$10.6K0.00%
Bryn Mawr Trust Co146$5.92K0.00%
Cassaday & Co Wealth Management LLC111$4.50K0.00%
Action Point Financial Planning, LLC111$4.42K0.00%
Global Retirement Partners, LLC100$4.05K0.00%
Silver Grove Financial Group, Inc.97$3.93K0.00%
Valued Wealth Advisors LLC83$3.36K0.00%
Clearstead Advisors, LLC46$1.86K0.00%
Toth Financial Advisory Corp40$1.62K0.00%
Creative Capital Management Investments LLC30$1.22K0.00%
Noble Wealth Management PBC29$1.18K0.00%
Plante Moran Financial Advisors, LLC16$6480.00%
Bogart Wealth, LLC13$5270.00%
Hollencrest Capital Management12$4860.00%
Quarry LP8$3240.00%
Davis Capital Management6$2430.00%
LRI Investments, LLC6$2430.00%
1 North Wealth Services LLC3$1220.00%
DecisionPoint Financial, LLC3$1190.00%
Maryland Capital Advisors Inc.1$410.00%
Avion Wealth14$00.00%
Evolution Advisers, Inc.18$00.00%
Navigoe, LLC6$00.00%

Sold out (53)

Institutions that held Oceaneering International Inc at the end of Q1 2026 and filed for Q2 2026 without it.

Institutions that sold out of OII in Q2 2026
InstitutionShares, Q1 2026Value, Q1 2026
Boston Partners854,941$30.3M
Qube Research & Technologies Ltd588,323$20.9M
Fort Washington Investment Advisors Inc526,034$18.7M
Agf Management Ltd365,938$13.0M
EAM Investors, LLC127,269$4.51M
Citadel Advisors LLC78,377$2.78M
Y-Intercept (Hong Kong) Ltd62,516$2.22M
Connor, Clark & Lunn Investment Management Ltd.48,333$1.71M
Lord, Abbett & Co. LLC45,000$1.60M
Melqart Asset Management (UK) Ltd42,922$1.52M
Jane Street Group, LLC41,029$1.46M
Carlson Capital L P32,800$1.16M
Man Group plc24,178$857.6K
Engineers Gate Manager LP24,050$853.1K
Towarzystwo Funduszy Inwestycyjnych Pzu SA21,000$744.9K
Oldfield Partners LLP28,729$690.4K
XTX Topco Ltd18,018$639.1K
Andina Capital Management, LLC14,766$523.8K
Balyasny Asset Management LLC14,762$523.6K
Ieq Capital, LLC14,394$510.6K
Campbell & CO Investment Adviser LLC13,862$491.7K
Elo Mutual Pension Insurance Co11,964$424.4K
K.J. Harrison & Partners Inc11,600$411.5K
Gallacher Capital Management LLC10,231$362.9K
HSBC Holdings PLC8,669$310.9K
Mozayyx Management LLC8,180$290.1K
Abacus Wealth Partners, LLC8,091$287.0K
Twinbeech Capital LP6,600$234.1K
Dynamic Technology Lab Private Ltd6,449$228.7K
Fieldview Capital Management, LLC5,841$207.2K
Quadrature Capital Ltd5,797$205.6K
CIBC World Markets Inc.5,665$200.9K
Nkcfo LLC2,500$89.0K
Lloyd Advisory Services, LLC.1,000$35.5K
Kingdom Financial Group LLC.1,000$35.5K
Nomura Asset Management Co Ltd900$31.9K
CX Institutional870$31.0K
Byrne Asset Management LLC470$16.7K
Root Financial Partners, LLC451$16.0K
Bank of Jackson Hole Trust261$9.26K
Spire Wealth Management203$7.20K
Twin Peaks Wealth Advisors, LLC188$6.67K
MAI Capital Management183$6.49K
Sound Income Strategies, LLC140$4.81K
Elequin Capital LP120$4.26K
Thompson Investment Management, Inc.105$3.72K
Wealth Preservation Advisors, LLC50$1.77K
MCF Advisors LLC38$1.35K
Annis Gardner Whiting Capital Advisors, LLC36$1.28K
Bruce G. Allen Investments, LLC20$709
Advisory Services Network, LLC11$390
Vermillion Wealth Management, Inc.11$390
Curio Wealth, LLC1$35

Not filed for Q2 2026 yet (5)

Institutions that held Oceaneering International Inc at the end of Q1 2026 and haven't filed a 13F for Q2 2026. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding OII in Q1 2026 that haven't filed for Q2 2026
InstitutionShares, Q1 2026Value, Q1 2026
Janus Henderson Group PLC217,255$7.71M
Corigliano Investment Advisers, LLC82,600$2.93M
CWM, LLC20,810$738.1K
USA Financial Portformulas Corp574$20.4K
Sunbelt Securities, Inc.119$4.22K