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

$33.22-2.22 (-6.26%)EnergyNYSE

Institutional Holders

50

as of Q4 2025

Total Institutional Value

$2.77730257000171e+234T

% of Float Held

Infinity%

QoQ Change in Holders

+15 / -0

Price History

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

OII — Biggest New Institutional Buyers This Quarter

FundActionShares AddedValue Added
Morgan Stanley Institutional Investment Advisors LLCNew Position+3.9M+$94.8M
FORT WASHINGTON INVESTMENT ADVISORS INC /OH/New Position+857K+$20.6M
Ranger Investment Management, L.P.New Position+803K+$19.3M
Bank of New York Mellon CorpNew Position+770K+$17.0M
PRINCIPAL FINANCIAL GROUP INCNew Position+577K+$13.9M
Old West Investment Management, LLCNew Position+543K+$13.1M
Boston Trust Walden CorpNew Position+532K+$12.8M
AGF MANAGEMENT LTDNew Position+375K+$9.0M
KEATING INVESTMENT COUNSELORS INCNew Position+354K+$8.5M
Granite Investment Partners, LLCNew Position+238K+$5.7M
ENVESTNET ASSET MANAGEMENT INCNew Position+229K+$5.0M
NEW YORK STATE TEACHERS RETIREMENT SYSTEMNew Position+164K+$3.9M
ESSEX INVESTMENT MANAGEMENT CO LLCNew Position+155K+$3.7M
SG Americas Securities, LLCNew Position+153K+$3.7M
LEUTHOLD GROUP, LLCNew Position+148K+$3.5M

OII — Institutions Reducing or Closing Positions

FundActionShares SoldValue Sold
BROWN ADVISORY INCDecreased-275K-$190.7B
EARNEST PARTNERS LLCDecreased-225K-$99.4B
AMERICAN CENTURY COMPANIES INCDecreased-35K-$90.2B
Neuberger Berman Group LLCDecreased-204K-$87.6B
Greenhouse Funds LLLPDecreased-24K-$61.7B
LOOMIS SAYLES & CO L PDecreased-66K-$47.0B
GOLDMAN SACHS GROUP INCDecreased-152K-$35.3B
ROYAL BANK OF CANADADecreased-67K-$31.9B
Aristotle Capital Boston, LLCDecreased-393K-$20.9B
JPMORGAN CHASE & CODecreased-256K-$18.9B
Nuveen, LLCDecreased-20K-$17.8B
FRANKLIN RESOURCES INCDecreased-257K-$17.4B
BANK OF AMERICA CORP /DE/Decreased-72K-$17.3B
Invesco Ltd.Decreased-16K-$15.2B
Sagefield Capital LPDecreased-130K-$12.6B

Top Institutional Holders(Q4 2025)

#FundSharesValue% of PortfolioType
1VANGUARD GROUP INC11,557,663$277.7M0.00%Share
2BlackRock, Inc.10,705,090$257.0M0.00%Share
3BROWN ADVISORY INC7,124,536$171.0M0.24%Share
4STATE STREET CORP4,647,252$111.0M0.00%Share
5Morgan Stanley Institutional Investment Advisors LLC3,947,022$94.8M10.03%Share
6EARNEST PARTNERS LLC3,791,599$91.1M0.39%Share
7AMERICAN CENTURY COMPANIES INC3,608,090$86.0M0.04%Share
8Neuberger Berman Group LLC3,335,121$80.0M0.06%Share
9BlackRock, Inc.3,324,642$79.0M0.00%Share
10DIMENSIONAL FUND ADVISORS LP3,237,179$77.0M0.02%Share
11Greenhouse Funds LLLP2,468,260$59.3M2.14%Share
12GEODE CAPITAL MANAGEMENT, LLC1,982,333$47.0M0.00%Share
13LOOMIS SAYLES & CO L P1,513,327$36.0M0.04%Share
14VAN ECK ASSOCIATES CORP1,463,952$35.0M0.03%Share
15CHARLES SCHWAB INVESTMENT MANAGEMENT INC1,442,874$34.0M0.01%Share
16Qube Research & Technologies Ltd1,165,936$28.0M0.03%Share
17ROYAL BANK OF CANADA960,041$23.0M0.00%Share
18NORTHERN TRUST CORP988,667$23.0M0.00%Share
19FORT WASHINGTON INVESTMENT ADVISORS INC /OH/856,644$20.6M0.11%Share
20Ranger Investment Management, L.P.802,635$19.3M1.32%Share
21Fisher Asset Management, LLC793,098$19.0M0.01%Share
22GOLDMAN SACHS GROUP INC803,666$19.0M0.00%Share
23VANGUARD GROUP INC679,421$16.3M0.00%Share
24ALGERT GLOBAL LLC699,646$16.0M0.25%Share
25Point72 Asset Management, L.P.699,212$16.0M0.02%Share
26Nuveen, LLC635,147$15.0M0.00%Share
27BlackRock, Inc.632,577$15.0M0.00%Share
28PRINCIPAL FINANCIAL GROUP INC571,181$13.7M0.01%Share
29Goehring & Rozencwajg Associates, LLC568,734$13.7M1.35%Share
30Old West Investment Management, LLC543,271$13.1M2.33%Share
31FIRST TRUST ADVISORS LP562,486$13.0M0.01%Share
32Invesco Ltd.511,390$12.3M0.00%Share
33TUDOR INVESTMENT CORP ET AL539,676$12.0M0.02%Share
34GOLDMAN SACHS GROUP INC458,326$11.0M0.00%Share
35Aristotle Capital Boston, LLC450,306$10.8M0.59%Share
36UBS Group AG437,052$10.5M0.00%Share
37BANK OF AMERICA CORP /DE/450,028$10.0M0.00%Share
38FRANKLIN RESOURCES INC441,993$10.0M0.00%Share
39BARCLAYS PLC416,718$10.0M0.00%Share
40SEI INVESTMENTS CO417,931$10.0M0.01%Share
41Boston Trust Walden Corp387,038$9.3M0.07%Share
42PANAGORA ASSET MANAGEMENT INC383,966$9.0M0.03%Share
43MORGAN STANLEY375,054$9.0M0.00%Share
44AGF MANAGEMENT LTD374,718$9.0M0.04%Share
45BlackRock, Inc.387,671$9.0M0.00%Share
46Sagefield Capital LP370,600$8.9M0.75%Share
47KEATING INVESTMENT COUNSELORS INC354,356$8.5M2.36%Share
48GAMCO INVESTORS, INC. ET AL341,840$8.2M0.08%Share
49BlackRock, Inc.345,608$8.0M0.00%Share
50AQR CAPITAL MANAGEMENT LLC362,822$8.0M0.00%Share

OII Institutional Ownership History

QuarterHoldersTotal ValueChange
Q4 2025314$2.3B+98
Q3 2025216$2.2T-28
Q2 2025244$1.4T-39
Q1 2025283$2.0T+15
Q4 2024268$14.5T+50
Q3 2024218$1590.9T+20
Q2 2024198$1168.3T+5
Q1 2024193$1102.3T—

Similar Stocks by Institutional Ownership

XOM

Exxon Mobil Corporation

CVX

Chevron Corporation

SHEL

Shell plc

TTE

TotalEnergies SE

COP

ConocoPhillips

PBR

Petróleo Brasileiro S.A. - Petrobras

ENB

Enbridge Inc.

BP

BP p.l.c.

As of Q4 2025, 50 institutional investors hold OII (Oceaneering International, Inc.). The largest holder is VANGUARD GROUP INC with $277.7M in shares. This quarter, 15 institutions opened new positions and 0 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 VANGUARD GROUP INC with $277.7M in shares.

Is institutional ownership of OII increasing or decreasing?

This quarter, 15 institutions opened new positions in OII and 0 closed their positions.