OII OCEANEERING INTERNATIONAL INC: institutional ownership and insider trading
408 funds reported holding $4.60B of OCEANEERING INTERNATIONAL INC in their latest 13F filings; in Q2 2026 funds net bought $105M, with 59 new positions and 51 funds selling out; over the last 12 months insiders bought $0 and sold $11.3M on the open market.
Famous investors holding OII
- Izzy Englander (Millennium Management): $6.27M, 0.0% of the portfolio
- Ken Griffin (Citadel Advisors): $2.19M, 0.0% of the portfolio
- Renaissance Technologies (Renaissance Technologies): $1.81M, 0.0% of the portfolio
- Two Sigma (Two Sigma Investments): $595K, 0.0% of the portfolio
- D. E. Shaw (D. E. Shaw & Co.): $367K, 0.0% of the portfolio
Largest institutional holders of OII
- BlackRock, Inc. (BLK) — $665M
- VANGUARD PORTFOLIO MANAGEMENT LLC — $321M
- VANGUARD GROUP INC — $297M
- STATE STREET CORP (STT, STT-PG) — $202M
- BROWN ADVISORY INC — $201M
- VANGUARD CAPITAL MANAGEMENT LLC — $182M
- AMERICAN CENTURY COMPANIES INC — $163M
- EARNEST PARTNERS LLC — $144M
- DIMENSIONAL FUND ADVISORS LP — $144M
- Neuberger Berman Group LLC — $131M
Recent OII insider trades
- Oct 1, 2026: Larson Roderick A. sold 6,000 shares ($265K)
- Aug 7, 2026: Murphy Paul B Jr sold 10,000 shares ($484K)
- Jul 30, 2026: Childress Earl sold 12,701 shares ($593K)
- Jul 30, 2026: Dyer Christopher J sold 1,200 shares ($57.2K)
5%+ owners
- Vanguard Portfolio Management: 7.7% (Schedule 13G, filed Apr 29, 2026)
- Vanguard Capital Management: 5.3% (Schedule 13G, filed Apr 30, 2026)
- STATE STREET CORPORATION: 5.1% (Schedule 13G, filed May 12, 2026)
- BROWN ADVISORY INC: 5.1% (Schedule 13G/A, filed Aug 14, 2026)