Who Owns Oceaneering International, Inc. (OII)?Hedge Fund & Institutional Holders

$33.49+0.16 (+0.48%)EnergyNYSE

Institutional Holders

50

as of Q4 2025

Total Institutional Value

$InfinityT

% of Float Held

Infinity%

QoQ Change in Holders

+10 / -2

Price History

$15.95$21.44$26.94$32.43$37.92Sep 24Jun 25Mar 26

OII — Biggest New Institutional Buyers This Quarter

FundActionShares AddedValue Added
Morgan Stanley Institutional Investment Advisors LLCNew Position+3.9M+$94.8B
FORT WASHINGTON INVESTMENT ADVISORS INC /OH/New Position+857K+$20.6B
Ranger Investment Management, L.P.New Position+803K+$19.3B
PRINCIPAL FINANCIAL GROUP INCNew Position+577K+$13.9B
Point72 Asset Management, L.P.Increased+582K+$13.1B
Old West Investment Management, LLCNew Position+543K+$13.1B
Boston Trust Walden CorpNew Position+532K+$12.8B
KEATING INVESTMENT COUNSELORS INCNew Position+354K+$8.5B
FMR LLCIncreased+118K+$6.0B
Granite Investment Partners, LLCNew Position+238K+$5.7B
Brandywine Global Investment Management, LLCNew Position+228K+$5.0B
Fisher Asset Management, LLCIncreased+153K+$3.1B
Goehring & Rozencwajg Associates, LLCIncreased+103K+$2.1B
JENNISON ASSOCIATES LLCNew Position+88K+$2.1B
FIRST TRUST ADVISORS LPIncreased+119K+$2.0B

OII — Institutions Reducing or Closing Positions

FundActionShares SoldValue Sold
BROWN ADVISORY INCDecreased-275K-$13.9B
Cubist Systematic Strategies, LLCClosed Position-451K-$11.2B
Aristotle Capital Boston, LLCDecreased-393K-$10.1B
EARNEST PARTNERS LLCDecreased-225K-$8.4B
JPMORGAN CHASE & CODecreased-256K-$7.9B
Edgestream Partners, L.P.Decreased-283K-$7.7B
Neuberger Berman Group LLCDecreased-204K-$7.7B
FRANKLIN RESOURCES INCDecreased-257K-$7.4B
SummitTX Capital, L.P.Closed Position-227K-$5.6B
GOLDMAN SACHS GROUP INCDecreased-152K-$5.3B
BALYASNY ASSET MANAGEMENT L.P.Decreased-203K-$5.3B
AMERICAN CENTURY COMPANIES INCDecreased-35K-$4.3B
LOOMIS SAYLES & CO L PDecreased-66K-$4.0B
ExodusPoint Capital Management, LPDecreased-125K-$4.0B
ROYAL BANK OF CANADADecreased-67K-$3.9B

Top Institutional Holders(Q4 2025)

#FundSharesValue% of PortfolioType
1BROWN ADVISORY INC7,124,536$171.0B238.57%Share
2Morgan Stanley Institutional Investment Advisors LLC3,947,022$94.8B10.03%Share
3EARNEST PARTNERS LLC3,791,599$91.1B390.44%Share
4AMERICAN CENTURY COMPANIES INC3,608,090$86.0B43.22%Share
5Neuberger Berman Group LLC3,335,121$80.0B59.55%Share
6DIMENSIONAL FUND ADVISORS LP3,237,179$77.0B16.15%Share
7Greenhouse Funds LLLP2,468,260$59.3B2.14%Share
8LOOMIS SAYLES & CO L P1,513,327$36.0B43.40%Share
9CHARLES SCHWAB INVESTMENT MANAGEMENT INC1,442,874$34.0B5.28%Share
10ROYAL BANK OF CANADA960,041$23.0B3.74%Share
11NORTHERN TRUST CORP988,667$23.0B2.93%Share
12FORT WASHINGTON INVESTMENT ADVISORS INC /OH/856,644$20.6B109.62%Share
13Ranger Investment Management, L.P.802,635$19.3B1.32%Share
14GOLDMAN SACHS GROUP INC803,666$19.0B2.34%Share
15Fisher Asset Management, LLC793,098$19.0B6.48%Share
16Point72 Asset Management, L.P.699,212$16.0B17.89%Share
17Nuveen, LLC635,147$15.0B3.93%Share
18PRINCIPAL FINANCIAL GROUP INC571,181$13.7B7.01%Share
19Goehring & Rozencwajg Associates, LLC568,734$13.7B1.35%Share
20Old West Investment Management, LLC543,271$13.1B2.33%Share
21FIRST TRUST ADVISORS LP562,486$13.0B9.45%Share
22Invesco Ltd.511,390$12.3B1.88%Share
23GOLDMAN SACHS GROUP INC458,326$11.0B1.36%Share
24Aristotle Capital Boston, LLC450,306$10.8B0.59%Share
25UBS Group AG437,052$10.5B1.70%Share
26BANK OF AMERICA CORP /DE/450,028$10.0B0.73%Share
27BARCLAYS PLC416,718$10.0B2.40%Share
28FRANKLIN RESOURCES INC441,993$10.0B2.45%Share
29SEI INVESTMENTS CO417,931$10.0B9.87%Share
30Boston Trust Walden Corp387,038$9.3B70.19%Share
31PANAGORA ASSET MANAGEMENT INC383,966$9.0B31.90%Share
32Sagefield Capital LP370,600$8.9B0.75%Share
33KEATING INVESTMENT COUNSELORS INC354,356$8.5B2.36%Share
34GAMCO INVESTORS, INC. ET AL341,840$8.2B78.90%Share
35AQR CAPITAL MANAGEMENT LLC362,822$8.0B4.20%Share
36PUBLIC SECTOR PENSION INVESTMENT BOARD345,270$8.0B26.86%Share
37JPMORGAN CHASE & CO350,877$8.0B0.50%Share
38SCHRODER INVESTMENT MANAGEMENT GROUP304,469$7.0B5.31%Share
39LOOMIS SAYLES & CO L P318,107$7.0B8.44%Share
40FMR LLC266,020$6.0B0.31%Share
41STATE OF WISCONSIN INVESTMENT BOARD261,453$6.0B13.41%Share
42Granite Investment Partners, LLC238,380$5.7B0.34%Share
43RHUMBLINE ADVISERS226,623$5.0B4.04%Share
44ROYAL BANK OF CANADA225,540$5.0B0.81%Share
45PRUDENTIAL FINANCIAL INC248,211$5.0B6.04%Share
46BROWN ADVISORY INC232,788$5.0B6.98%Share
47Brandywine Global Investment Management, LLC228,424$5.0B33.53%Share
48DIMENSIONAL FUND ADVISORS LP197,463$4.0B0.84%Share
49SCHRODER INVESTMENT MANAGEMENT GROUP197,445$4.0B3.03%Share
50AMERIPRISE FINANCIAL INC203,599$4.0B0.90%Share

OII Institutional Ownership History

QuarterHoldersTotal ValueChange
Q4 2025311$1.3T+95
Q3 2025216$1.2T-28
Q2 2025244$719.3B-39
Q1 2025283$1.6T+15
Q4 2024268$9.1T+51
Q3 2024217$88.1T+20
Q2 2024197$99.4T+7
Q1 2024190$802.3T—

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As of Q4 2025, 50 institutional investors hold OII (Oceaneering International, Inc.). The largest holder is BROWN ADVISORY INC with $171.0B in shares. This quarter, 10 institutions opened new positions and 2 closed their positions.

Frequently Asked Questions

How many hedge funds own OII?

As of Q4 2025, 50 institutional investors report holding OII (Oceaneering International, Inc.) in their 13F filings.

Who is the largest institutional holder of OII?

The largest institutional holder of OII is BROWN ADVISORY INC with $171.0B in shares.

Is institutional ownership of OII increasing or decreasing?

This quarter, 10 institutions opened new positions in OII and 2 closed their positions.