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OII

Oceaneering International Inc
$43.22 +1.12 (+2.66%) At close · Jul 13
Market Cap
$4.32B
Shares
99,745,249

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

The Jun 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out.
Holders: 370
Total Value: $3,420,829,005
Total Shares: 96,179,850
Showing 1–100 of 376 holdings by value · page 1 of 4

Institutional Ownership Trend

26 quarters

Superinvestors Holding OII

All superinvestors →
Mario Gabelli $11,999,430 Joel Greenblatt $2,338,466

Holder Concentration

Across 370 13F filers
Top Holder
17.3%
Jun 2023 → Mar 2026 · range 15.8% – 17.3%
of institutional value
Top 5
37.4%
Jun 2023 → Mar 2026 · range 37.4% – 46.7%
of institutional value
Top 10
54.6%
Jun 2023 → Mar 2026 · range 54.6% – 62.0%
of institutional value
HHI
500
Jun 2023 → Mar 2026 · range 500 – 640
Broadly held
Showing 100 of 376
All Common Calls Puts
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Holder Value (USD) % of 13F Shares Open
Mega BlackRock, Inc. $579,893,420 16.95% 16,348,842
Large BROWN ADVISORY INC $205,321,675 6.00% 5,788,601
Mega STATE STREET CORP $178,562,932 5.22% 5,034,196
Mega VANGUARD CAPITAL MANAGEMENT LLC $158,861,723 4.64% 4,478,763
Mega AMERICAN CENTURY COMPANIES INC $133,603,926 3.91% 3,766,674
Large EARNEST PARTNERS LLC $130,682,582 3.82% 3,684,313
Mega DIMENSIONAL FUND ADVISORS LP $122,788,234 3.59% 3,461,749
Mid Morgan Stanley Institutional Investment Advisors LLC $122,478,087 3.58% 3,453,005
Mega NEUBERGER BERMAN GROUP LLC $114,151,645 3.34% 3,218,259
Mega GEODE CAPITAL MANAGEMENT, LLC $84,293,070 2.46% 2,376,461
Mega VAN ECK ASSOCIATES CORP $73,120,943 2.14% 2,061,487
Mid Greenhouse Funds LLLP $72,092,384 2.11% 2,032,489
Mid REINHART PARTNERS, LLC. $66,794,099 1.95% 1,648,423
Large LOOMIS SAYLES & CO L P $60,309,250 1.76% 1,700,289
Large BARROW HANLEY MEWHINNEY & STRAUSS LLC $50,401,238 1.47% 1,420,954
Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC $49,059,408 1.43% 1,383,124
Mega PRICE T ROWE ASSOCIATES INC /MD/ $45,942,339 1.34% 1,295,245
Mega NORTHERN TRUST CORP Bank $44,973,404 1.31% 1,267,928
Mega ROYAL BANK OF CANADA Bank $37,180,006 1.09% 1,048,210
Mega MORGAN STANLEY $36,900,608 1.08% 1,040,333
Mega GOLDMAN SACHS GROUP INC $35,466,132 1.04% 999,891
Large Boston Partners $30,324,755 0.89% 854,941
Mega FRANKLIN RESOURCES INC $29,382,354 0.86% 828,372
Mid Ranger Investment Management, L.P. $28,255,224 0.83% 796,595
Mega Fisher Asset Management, LLC $28,101,781 0.82% 792,269
Mega Bank of New York Mellon Corp Bank $26,789,457 0.78% 755,271
Mid Goehring & Rozencwajg Associates, LLC $25,310,895 0.74% 713,586
Mega Invesco Ltd. $24,888,055 0.73% 701,665
Small Old West Investment Management, LLC $24,729,435 0.72% 697,193
Mega VANGUARD FIDUCIARY TRUST CO Bank $24,495,865 0.72% 690,608
Large FEDERATED HERMES, INC. $24,411,161 0.71% 688,220
Mega MASSACHUSETTS FINANCIAL SERVICES CO /MA/ $24,176,352 0.71% 681,600
Mega SCHRODER INVESTMENT MANAGEMENT GROUP $21,431,647 0.63% 604,219
Large Qube Research & Technologies Ltd $20,867,816 0.61% 588,323
Mega PRINCIPAL FINANCIAL GROUP INC $20,762,647 0.61% 585,358
Mega JPMORGAN CHASE & CO $18,767,317 0.55% 529,104
Large FORT WASHINGTON INVESTMENT ADVISORS INC /OH/ $18,658,425 0.55% 526,034
Large Boston Trust Walden Corp $18,425,848 0.54% 519,477
Large PANAGORA ASSET MANAGEMENT INC $17,124,064 0.50% 482,776
Mid ALGERT GLOBAL LLC $16,063,830 0.47% 452,885
Large SEI INVESTMENTS CO $15,631,309 0.46% 440,691
Mega FIRST TRUST ADVISORS LP $15,435,692 0.45% 435,176
Mega Nuveen, LLC $15,434,769 0.45% 435,150
Mega AQR CAPITAL MANAGEMENT LLC $13,909,558 0.41% 392,150
Large STOREBRAND ASSET MANAGEMENT AS $12,988,688 0.38% 366,188
Large AGF MANAGEMENT LTD $12,979,820 0.38% 365,938
Large Public Sector Pension Investment Board Pension $12,662,187 0.37% 356,983
Mega FMR LLC $12,256,019 0.36% 345,532
Small KEATING INVESTMENT COUNSELORS INC $12,004,395 0.35% 338,438
Mid GAMCO INVESTORS, INC. ET AL $11,999,430 0.35% 338,298
Mid Granite Investment Partners, LLC $11,600,569 0.34% 327,053
Mega UBS Group AG $11,202,418 0.33% 315,828
Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC $10,625,851 0.31% 299,573
Mega BARCLAYS PLC $10,595,207 0.31% 298,709
Mega ENVESTNET ASSET MANAGEMENT INC $9,921,349 0.29% 279,711
Mid Aristotle Capital Boston, LLC $9,629,750 0.28% 271,490
Mega BANK OF AMERICA CORP /DE/ Bank $9,265,861 0.27% 261,231
Large Russell Investments Group, Ltd. $8,706,535 0.25% 245,462
Mid Sagefield Capital LP $8,660,355 0.25% 244,160
Mega Legal & General Group Plc $8,297,354 0.24% 233,926
Mega RHUMBLINE ADVISERS $8,294,056 0.24% 233,833
Large PRUDENTIAL FINANCIAL INC $7,834,294 0.23% 220,871
Mega JANUS HENDERSON GROUP PLC $7,706,034 0.23% 217,255
Small Archon Capital Management LLC $7,377,760 0.22% 208,000
Mega BNP PARIBAS ARBITRAGE, SA $7,354,207 0.21% 207,336
Mega AMERIPRISE FINANCIAL INC $7,128,228 0.21% 200,965
Mega Swiss National Bank Bank $7,007,027 0.20% 197,548
Mega WELLS FARGO & COMPANY/MN $6,480,900 0.19% 182,715
Large GABELLI FUNDS LLC $6,456,426 0.19% 182,025
Mid Curi Capital, LLC $5,897,844 0.17% 166,277
Mid Cannell & Spears LLC $5,834,034 0.17% 164,478
Small Manatuck Hill Partners, LLC $5,696,482 0.17% 160,600
Large NEW YORK STATE TEACHERS RETIREMENT SYSTEM Pension $5,627,812 0.16% 158,664
Small ESSEX INVESTMENT MANAGEMENT CO LLC $5,617,525 0.16% 158,374
Small LEUTHOLD GROUP, LLC $5,326,600 0.16% 150,172
Mega ALLIANCEBERNSTEIN L.P. $5,162,020 0.15% 145,532
Large Empowered Funds, LLC $4,704,279 0.14% 132,627
Small Informed Momentum Co LLC $4,514,231 0.13% 127,269
Small GeoSphere Capital Management, LLC $4,256,400 0.12% 120,000
Large CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM Pension $4,242,956 0.12% 119,621
Mid EFG International AG $4,190,389 0.12% 118,139
Large BNP PARIBAS ASSET MANAGEMENT Holding S.A. $4,176,733 0.12% 117,754
Mid Concurrent Investment Advisors, LLC $4,133,922 0.12% 116,547
Mid Edgestream Partners, L.P. $4,133,815 0.12% 116,544
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $4,103,879 0.12% 115,700
Large STATE OF WISCONSIN INVESTMENT BOARD $3,983,919 0.12% 112,318
Large PEAK6 LLC $3,646,316 0.11% 102,800
Mega Mitsubishi UFJ Asset Management Co., Ltd. $3,587,116 0.10% 101,131
Mid INTECH INVESTMENT MANAGEMENT LLC $3,451,904 0.10% 97,319
Small ISTHMUS PARTNERS, LLC $3,418,031 0.10% 96,364
Mega CITADEL ADVISORS LLC $3,270,334 0.10% 92,200
Large NEW YORK STATE COMMON RETIREMENT FUND Pension $3,247,916 0.09% 91,568
Mega DEUTSCHE BANK AG\ Bank $3,124,835 0.09% 88,098
Large RENAISSANCE TECHNOLOGIES LLC $3,014,950 0.09% 85,000
Mid ROYCE & ASSOCIATES LP $2,944,612 0.09% 83,017
Small Corigliano Investment Advisers, LLC $2,929,822 0.09% 82,600
Large CANADA LIFE ASSURANCE Co Insurance $2,880,696 0.08% 81,215
Mega CITADEL ADVISORS LLC $2,780,031 0.08% 78,377
Mid Annex Advisory Services, LLC $2,727,077 0.08% 67,302
Mega VANGUARD ASSET MANAGEMENT, Ltd $2,658,405 0.08% 74,948
Key facts CIK 73756 CUSIP 675232102 13F (30d) 23 filings 23 filers Visit website Investor relations

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