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Oceaneering International (OII) Institutional Ownership

Oceaneering International logo
$24.41 +0.25 (+1.02%)
Closing price 10/3/2025 03:59 PM Eastern
Extended Trading
$25.31 +0.91 (+3.72%)
As of 10/3/2025 06:52 PM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more.
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Institutional Ownership Changes (13F Filings) for Oceaneering International (NYSE:OII)

Current
Institutional Ownership
Percentage
93.93%
Number of
Institutional Buyers
(last 12 months)
181
Total
Institutional Inflows
(last 12 months)
$421.85M
Number of
Institutional Sellers
(last 12 months)
125
Total
Institutional Outflows
(last 12 months)
$232.96M
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OII Institutional Buying and Selling by Quarter

Oceaneering International Major Shareholders & Ownership History

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Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
9/26/2025Corient Private Wealth LLC10,185$211K0.0%N/A0.010%
9/24/2025Texas Permanent School Fund Corp95,419$1.98M0.0%+11.0%0.095%
9/4/2025Osaic Holdings Inc.31,093$644K0.0%+7.7%0.031%
8/19/2025Ranger Investment Management L.P.614,225$12.73M0.9%-31.2%0.613%
8/16/2025Nikko Asset Management Americas Inc.27,135$562K0.0%-2.0%0.027%
8/16/2025Public Sector Pension Investment Board342,944$7.11M0.0%+7.0%0.342%
8/16/2025Headlands Technologies LLC4,418$92K0.0%N/A0.004%
8/15/2025CANADA LIFE ASSURANCE Co83,103$1.72M0.0%-3.4%0.083%
8/15/2025Tower Research Capital LLC TRC 13,206$274K0.0%+432.1%0.013%
8/15/2025Corient Private Wealth LLC10,185$211K0.0%N/A0.010%
8/15/2025State of Tennessee Department of Treasury46,429$962K0.0%+88.6%0.046%
8/15/2025Captrust Financial Advisors17,896$371K0.0%+18.3%0.018%
8/15/2025Teza Capital Management LLC12,613$261K0.2%-35.4%0.013%
8/15/2025Smartleaf Asset Management LLC2,995$62K0.0%+33.2%0.003%
8/15/2025Oxford Asset Management LLP20,896$433K0.2%N/A0.021%
8/15/2025Man Group plc17,800$369K0.0%-2.6%0.018%
8/15/2025HRT Financial LP100,457$2.08M0.0%N/A0.100%
8/15/2025Engineers Gate Manager LP83,590$1.73M0.0%+11.9%0.083%
8/15/2025Cubist Systematic Strategies LLC473,228$9.81M0.0%+15.7%0.472%
8/15/2025BNP Paribas Financial Markets28,430$589K0.0%+66.8%0.028%
8/15/2025Brevan Howard Capital Management LP42,453$880K0.0%+42.9%0.042%
8/15/2025Balyasny Asset Management L.P.1,361,917$28.22M0.0%+916.6%1.359%
8/15/2025Bank of America Corp DE540,191$11.19M0.0%-5.3%0.539%
8/15/2025Ameriprise Financial Inc.220,320$4.57M0.0%-7.2%0.220%
8/15/2025AQR Capital Management LLC280,175$5.81M0.0%+72.5%0.280%
8/14/2025California State Teachers Retirement System93,342$1.93M0.0%+0.7%0.093%
8/14/2025Raymond James Financial Inc.56,185$1.16M0.0%-19.7%0.056%
8/14/2025MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.51,530$1.07M0.0%-14.3%0.051%
8/14/2025The Manufacturers Life Insurance Company 50,974$1.06M0.0%-10.9%0.051%
8/14/2025Sei Investments Co.459,733$9.53M0.0%+19.0%0.459%
8/14/2025Integrated Investment Consultants LLC12,093$251K0.0%-38.5%0.012%
8/14/2025Qube Research & Technologies Ltd812,325$16.83M0.0%+29.0%0.811%
8/14/2025AXA S.A.15,796$327K0.0%N/A0.016%
8/14/2025State Street Corp4,810,834$99.68M0.0%-0.8%4.801%
8/14/2025WINTON GROUP Ltd31,312$649K0.0%-32.3%0.031%
8/14/2025Cerity Partners LLC9,732$202K0.0%N/A0.010%
8/14/2025Federated Hermes Inc.116,146$2.41M0.0%-19.4%0.116%
8/13/2025Gabelli Funds LLC182,865$3.79M0.0%+5.1%0.182%
8/13/2025Gamco Investors INC. ET AL350,440$7.26M0.1%-5.3%0.350%
8/13/2025Brown Advisory Inc.7,345,637$152.20M0.2%+12.2%7.330%
8/13/2025First Trust Advisors LP537,860$11.14M0.0%-0.4%0.537%
8/13/2025EverSource Wealth Advisors LLC1,442$30K0.0%+335.6%0.001%
8/13/2025Invesco Ltd.650,188$13.47M0.0%+8.0%0.649%
8/13/2025Greenhouse Funds LLLP2,491,803$51.63M2.1%+9.9%2.487%
8/13/2025Isthmus Partners LLC89,822$1.86M0.2%+1.5%0.090%
8/13/2025Fisher Asset Management LLC573,330$11.88M0.0%+8.0%0.572%
8/13/2025Edgestream Partners L.P.403,247$8.36M0.2%+74.6%0.402%
8/13/2025Panagora Asset Management Inc.205,773$4.26M0.0%+28.2%0.205%
8/13/2025Schroder Investment Management Group448,394$9.29M0.0%+27.5%0.447%
8/13/2025Loomis Sayles & Co. L P1,926,047$39.91M0.1%-6.9%1.922%
8/13/2025Norges Bank71,663$1.49M0.0%N/A0.072%
8/13/2025Hsbc Holdings PLC38,425$799K0.0%-22.2%0.038%
8/13/2025Capital Fund Management S.A.11,610$241K0.0%N/A0.012%
8/13/2025Carlson Capital L.P.27,700$574K0.2%N/A0.028%
8/13/2025Russell Investments Group Ltd.115,515$2.39M0.0%-24.7%0.115%
8/12/2025Inceptionr LLC23,333$483K0.1%N/A0.023%
8/12/2025XTX Topco Ltd25,620$531K0.0%+46.2%0.026%
8/12/2025Ameritas Investment Partners Inc.9,600$199K0.0%-9.2%0.010%
8/12/2025Prudential Financial Inc.204,673$4.24M0.0%-1.8%0.204%
8/12/2025American Century Companies Inc.3,370,206$69.83M0.0%+8.2%3.363%
8/12/2025Rhumbline Advisers239,590$4.96M0.0%-7.3%0.239%
8/12/2025Franklin Resources Inc.1,236,193$25.61M0.0%-7.0%1.234%
8/12/2025Legal & General Group Plc277,047$5.74M0.0%-0.2%0.276%
8/12/2025JPMorgan Chase & Co.392,321$8.13M0.0%-33.7%0.391%
8/12/2025Magnetar Financial LLC17,181$356K0.0%N/A0.017%
8/12/2025Swiss National Bank193,048$4M0.0%-1.4%0.193%
8/8/2025Intech Investment Management LLC79,258$1.64M0.0%-15.3%0.079%
8/8/2025Creative Planning16,255$337K0.0%-17.6%0.016%
8/8/2025SG Americas Securities LLC10,599$220K0.0%+129.1%0.011%
8/8/2025Commonwealth of Pennsylvania Public School Empls Retrmt SYS25,827$535K0.0%+6.8%0.026%
8/8/2025Old West Investment Management LLC196,637$4.07M1.3%-25.3%0.196%
8/8/2025Geode Capital Management LLC2,248,864$46.61M0.0%-3.3%2.244%
8/8/2025PNC Financial Services Group Inc.9,939$206K0.0%-10.5%0.010%
8/8/2025KBC Group NV3,726$77K0.0%-30.3%0.004%
8/7/2025ProShare Advisors LLC21,105$437K0.0%-11.3%0.021%
8/7/2025Profund Advisors LLC17,032$353K0.0%+3.4%0.017%
8/7/2025CSM Advisors LLC14,027$291K0.0%N/A0.014%
8/7/2025Campbell & CO Investment Adviser LLC20,012$415K0.0%N/A0.020%
8/7/2025Mitsubishi UFJ Asset Management Co. Ltd.87,004$1.80M0.0%+31.4%0.087%
8/7/2025Los Angeles Capital Management LLC35,036$726K0.0%-26.1%0.035%
8/6/2025Fox Run Management L.L.C.29,657$614K0.1%-67.6%0.030%
8/6/2025EFG Asset Management North America Corp.179,408$3.72M0.5%+16.9%0.179%
8/5/2025Bank of New York Mellon Corp644,035$13.34M0.0%-1.3%0.643%
8/5/2025Corton Capital Inc.13,675$283K0.3%N/A0.014%
8/5/2025Bank of Montreal Can24,207$502K0.0%-3.9%0.024%
8/5/2025Versor Investments LP15,327$318K0.1%-28.0%0.015%
8/1/2025Jennison Associates LLC71,342$1.48M0.0%+24.2%0.071%
8/1/2025Teacher Retirement System of Texas41,611$862K0.0%+36.4%0.042%
8/1/2025Envestnet Asset Management Inc.273,680$5.67M0.0%-16.3%0.273%
7/31/2025Oppenheimer Asset Management Inc.67,398$1.40M0.0%-3.9%0.067%
7/31/2025State of New Jersey Common Pension Fund D99,181$2.06M0.0%+13.3%0.099%
7/31/2025AlphaQuest LLC84,475$1.75M0.2%+29.0%0.084%
7/31/2025Sumitomo Mitsui Trust Group Inc.27,135$562K0.0%-2.0%0.027%
7/30/2025Bleakley Financial Group LLC15,947$330K0.0%+54.3%0.016%
7/29/2025Mutual of America Capital Management LLC12,922$268K0.0%-12.2%0.013%
7/28/2025New York State Teachers Retirement System166,252$3.45M0.0%-3.4%0.165%
7/28/2025Boston Trust Walden Corp526,125$10.90M0.1%N/A0.523%
7/25/2025CWM LLC13,680$283K0.0%+276.4%0.014%
7/25/2025Vanguard Personalized Indexing Management LLC14,265$296K0.0%+12.5%0.014%
7/25/2025Concurrent Investment Advisors LLC141,837$2.94M0.1%+10.1%0.141%
(Data available from 1/1/2016 forward)

OII Institutional Ownership - Frequently Asked Questions

Who are the largest shareholders of OII shares?

During the previous two years, 286 institutional investors and hedge funds held shares of Oceaneering International. The most heavily invested institutionals were Vanguard Group Inc. ($269.61M), Brown Advisory Inc. ($152.20M), State Street Corp ($99.68M), Earnest Partners LLC ($91.98M), FMR LLC ($72.02M), American Century Companies Inc. ($69.83M), and Dimensional Fund Advisors LP ($69.50M).Learn more on Oceaneering International's institutional investors.

What percentage of Oceaneering International's stock is owned by institutional investors?

93.93% of Oceaneering International's stock is owned by institutional investors. Learn more on OII's institutional investor holdings.

Which institutional investors have been buying Oceaneering International's stock?

Of the 241 institutional investors that purchased Oceaneering International's stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Brown Advisory Inc. ($3.16M), Hennessy Advisors Inc. ($1.84M), Congress Asset Management Co. ($1.79M), Loomis Sayles & Co. L P ($1.67M), Earnest Partners LLC ($1.55M), Balyasny Asset Management L.P. ($1.23M), and American Century Companies Inc. ($1.22M).

How much institutional buying is happening at Oceaneering International?

Institutional investors have bought a total of 17,934,439 shares in the last 24 months. This purchase volume represents approximately $421.85M in transactions.

Which of Oceaneering International's major shareholders have been selling company stock?

Of the 125 institutional investors that sold Oceaneering International's stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: New York State Common Retirement Fund ($1.91M), Earnest Partners LLC ($1.72M), Bank of New York Mellon Corp ($1.55M), Janus Henderson Group PLC ($569.39K), Greenhouse Funds LLLP ($421.72K), Victory Capital Management Inc. ($362.14K), and Ranger Investment Management L.P. ($278.89K).

How much institutional selling is happening at Oceaneering International?

Institutional investors have sold a total of 10,067,215 shares in the last 24 months. This volume of shares sold represents approximately $232.96M in transactions.


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This page (NYSE:OII) was last updated on 10/5/2025 by MarketBeat.com Staff
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