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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.

Q3 2025 vs. Q2 2025

How the institutions holding Oceaneering International Inc changed between Q2 2025 and Q3 2025.

All holders in Q3 2025All holders in Q2 2025

13F holders of OII: Q2 2025 compared with Q3 2025
MeasureQ2 2025Of which not filed for Q3 2025Q3 2025Change
Holders2884301+17
Shares95.8M108.8K95.6M−133.6K (−0.1%)
Value$1.99B$2.25M$2.37B+$385.4M (+19.4%)

4 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so the changes leave them out.

New holders (46)

Institutions that held Oceaneering International Inc at the end of Q3 2025 but not at the end of Q2 2025.

Institutions new to OII in Q3 2025
InstitutionSharesValue% of portfolio
SIR Capital Management, L.P.272,400$6.75M0.61%
SummitTX Capital, L.P.226,802$5.62M0.23%
AXA Investment Managers S.A.130,217$3.23M0.01%
Bridgeway Capital Management, LLC98,513$2.44M0.05%
Annex Advisory Services, LLC53,597$1.33M0.03%
South Dakota Investment Council41,600$1.03M0.02%
Manatuck Hill Partners, LLC40,000$991.2K0.34%
SummerHaven Investment Management, LLC39,040$967.4K0.56%
Trexquant Investment LP29,954$742.3K0.01%
Horizon Investments, LLC29,058$720.1K0.01%
GWM Advisors LLC19,015$471.2K0.00%
ISAM Funds (UK) Ltd18,887$468.0K0.10%
Alps Advisors Inc18,800$465.9K0.00%
Dynamic Technology Lab Private Ltd18,457$457.0K0.08%
CenterBook Partners LP16,515$409.2K0.02%
Aristeia Capital LLC16,061$398.0K0.01%
Gallacher Capital Management LLC12,836$318.1K0.13%
Aigen Investment Management, LP12,539$310.7K0.05%
Round Rock Advisors, LLC11,374$281.8K0.04%
State of Wyoming10,678$264.6K0.03%
CIBC Bancorp USA Inc.10,023$248.4K0.00%
Blair William & Co9,964$246.9K0.00%
Toroso Investments, LLC9,778$242.3K0.00%
Legacy Capital Group California, Inc.9,397$232.9K0.06%
R Squared Ltd9,259$229.4K0.10%
Commonwealth Equity Services, LLC8,980$223.0K0.00%
Inspire Advisors, LLC8,846$219.2K0.02%
Neo Ivy Capital Management8,372$207.5K0.05%
Omers Administration Corp8,100$200.7K0.00%
Quadrant Capital Group LLC1,797$44.5K0.00%
Point72 Europe (London) LLP1,306$32.4K0.00%
Quarry LP1,229$30.5K0.01%
Salomon & Ludwin, LLC1,068$26.0K0.00%
CX Institutional870$22.0K0.00%
Rockefeller Capital Management L.P.773$19.2K0.00%
Byrne Asset Management LLC625$15.5K0.01%
Root Financial Partners, LLC250$6.20K0.00%
Wealthspire Advisors, LLC216$5.35K0.00%
Sunbelt Securities, Inc.119$2.95K0.00%
Simplex Trading, LLC101$2.00K0.00%
Annis Gardner Whiting Capital Advisors, LLC55$1.36K0.00%
Westfuller Advisors, LLC49$1.21K0.00%
UMA Financial Services, Inc.20$4960.00%
Advisory Services Network, LLC11$2730.00%
JPL Wealth Management, LLC5$1240.00%
Cloud Capital Management, LLC9$00.00%

Sold out (29)

Institutions that held Oceaneering International Inc at the end of Q2 2025 and filed for Q3 2025 without it.

Not filed for Q3 2025 yet (4)

Institutions that held Oceaneering International Inc at the end of Q2 2025 and haven't filed a 13F for Q3 2025. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding OII in Q2 2025 that haven't filed for Q3 2025
InstitutionShares, Q2 2025Value, Q2 2025
Norges Bank71,663$1.48M
EP Wealth Advisors, LLC25,554$529.5K
CIBC World Markets Corp11,585$240.0K
Parkworth Wealth Management, Inc.15$311