OII Institutional Ownership
Who owns Oceaneering International Inc and what the big funds did with it last quarter, from every SEC 13F filing. 379 funds reported holding OII at Jun 30, 2026, together owning 104.9% of the company.
- ▲210 buying vs 163 selling
- ▲Held by funds +2.6 pts
- ▲Funds holding +9
- ▼Superinvestors: 1 added, 2 cut
- ●Put/call not meaningful
What the filings show, not a forecast. Positions can be up to 45 days old and leave out short sales.
Funds holding and ownership
8 quartersQuarter over quarter
all 13F filers| Q2 2026 | This quarter | Q1 2026 | Change |
|---|---|---|---|
| Funds holding | 379 | 370 | +2.4% |
| In funds' top 10 | 5 | 5 | 0.0% |
| 13F shares | 104M | 102M | +2.5% |
| Held by funds | 104.9% | 102.3% | +2.6 pts |
| New positions | 61 | 84 | −27.4% |
| Increased | 149 | 133 | +12.0% |
| Reduced | 110 | 103 | +6.8% |
| Sold out | 53 | 33 | +60.6% |
| Calls (shares) | 99K | 49K | +101.4% |
| Puts (shares) | 16K | 35K | −55.0% |
| Put/call ratio | 0.16 | 0.71 | −77.7% |
Buyers vs sellers
adding or new vs cutting or sold outSuperinvestors in OII
All superinvestors →
Who owns OII
share of fund held shares- Index and passive funds45.0%
- Active managers and hedge funds42.8%
- Banks and brokers10.9%
- Pensions, insurers and other1.4%
The top 10 holders own 53.9% of all OII shares that funds reported. Groups are our own grouping of filers by name.
Put/call ratio
funds' options, market makers left outAbove 1 means funds hold more puts than calls, a sign of hedging or bets on a fall. Options are valued at the underlying shares.
Filed so far for Q3 2026
95 funds changed their position- Spire Wealth ManagementNew+72K sh
- Concurrent Investment Advisors, LLCAdded+65K sh
- Y-Intercept (Hong Kong) LtdNew+40K sh
- SummerHaven Investment Management, LLCSold out−36K sh
- New York State Teachers Retirement SystemTrimmed−28K sh
🔒 Free account: see all 20.
Top holders
Q2 2026| # | Fund | Of company | Shares | Value | Change |
|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 16.50% | 16.4M | $665M | +54K |
| 2 | Vanguard Portfolio Management LLC | 7.97% | 7.9M | $321M | +348K |
| 3 | State Street Corp | 5.02% | 5M | $202M | −40K |
| 4 | Brown Advisory Inc | 5.00% | 5M | $201M | −821K |
| 5 | Vanguard Capital Management LLC | 4.51% | 4.5M | $182M | +6,505 |
| 6 | American Century Companies Inc | 4.05% | 4M | $163M | +257K |
| 7 | Earnest Partners LLC | 3.57% | 3.5M | $144M | −137K |
| 8 | Dimensional Fund Advisors LP | 3.57% | 3.5M | $144M | +85K |
| 9 | Neuberger Berman Group LLC | 3.25% | 3.2M | $131M | +10K |
| 10 | Morgan Stanley Institutional Investment Advisors LLC | 3.08% | 3.1M | $124M | −387K |
- Franklin Resources Inc+2.2M sh+$90.5M
- Reinhart Partners, Llc.+1.6M sh+$66.8M
- Nomura Asset Management International Inc.+1.3M sh+$53.9M
- Barrow Hanley Mewhinney & Strauss LLC+852K sh+$34.5M
- Geode Capital Management, LLC+463K sh+$18.8M
- Bank of New York Mellon Corp+372K sh+$15.1M
- Vanguard Portfolio Management LLC+348K sh+$14.1M
- Bessemer Group Inc+329K sh+$13.3M
- Brown Advisory Inc−821K sh−$33.3M
- Boston Partners−855K sh−$30.3M
- Qube Research & Technologies Ltd−588K sh−$20.9M
- Fort Washington Investment Advisors Inc /oh/−526K sh−$18.7M
- Algert Global LLC−399K sh−$16.2M
- Morgan Stanley Institutional Investment Advisors LLC−387K sh−$15.7M
- Agf Management Ltd−366K sh−$13M
- Barclays PLC−282K sh−$11.4M
OII institutional ownership FAQ
Who owns the most OII stock?
In Q2 2026 13F filings the largest holder of OII was BlackRock, Inc., followed by Vanguard Portfolio Management LLC and State Street Corp. Index fund managers are usually the biggest holders of large companies.
What percentage of OII is owned by institutions?
Funds that file 13F reports held 104.9% of OII's shares at Jun 30, 2026, compared with 102.3% a quarter earlier. That counts every manager with more than $100 million in US stocks.
Are hedge funds buying OII?
In Q2 2026, 210 funds bought OII (61 of them new positions) and 163 sold (53 sold out completely). Among well known investors, 1 added and 2 cut. Our fund sentiment for OII is bullish.
What is OII's institutional put/call ratio?
Funds reported $636K of OII puts against $4M of calls, a put/call ratio of 0.16 (0.71 the quarter before). Market makers and bank trading desks are left out, since their options are mostly hedges.
How current is this OII ownership data?
13F filings show holdings at the end of each quarter and are due within 45 days, so positions can be up to six weeks old when they appear. We add each new filing within minutes, and the "filed so far" list shows funds that have already reported the next quarter.
For informational and educational purposes only. Not investment advice, and not a recommendation to buy or sell any security. Fund sentiment summarises what 13F filings show and is not a forecast. Holdings come from SEC Form 13F filings as reported and show positions at the end of the quarter, up to 45 days before the filing. A 13F leaves out short positions, cash, bonds and most foreign holdings. See all hedge fund holdings.