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Of the 11 tracked institutions holding OII, 6 have a 3-year clone track record — 5 of them beat the S&P. Average holder's clone alpha: +3.6pt. It's a gauge of who owns the name, not just how many.
Among the 11 tracked institutional investors we monitor, OII (OCEANEERING INTL INC) is held with a combined value of $1.29B across 36,808,737 shares. The largest holder is BlackRock, Inc. with a position worth $664.66M. 2 funds opened new positions in the most recent quarter. 6 funds increased their holdings. 3 funds reduced their position.
Total Institutional Value
$1.29B
Total Shares Held
36,808,737
Institutional Holders
11
Ranked by estimated dollars moved (share change × implied price). 13F data lags up to 45 days.
| # | Fund | Value↓ | Portfolio % | Change |
|---|---|---|---|---|
| 1 | BlackRock, Inc. | $664.66M | 0.01% | +0.3% |
| 2 | VANGUARD GROUP INC | $297.28M | 0.00% | +1.5% |
| 3 | STATE STREET CORP | $202.37M | 0.01% | -0.8% |
| 4 | PRICE T ROWE ASSOCIATES INC /MD/ | $53.52M | 0.01% | +2.0% |
| 5 | Fisher Asset Management, LLC | $25.74M | 0.01% | -19.8% |
| 6 | AQR CAPITAL MANAGEMENT LLC | $18.20M | 0.01% | +14.5% |
| 7 | FMR LLC | $14.16M | 0.00% | +1.1% |
| 8 | MILLENNIUM MANAGEMENT LLC | $6.27M | 0.00% | New |
| 9 | Gotham Asset Management, LLC | $3.19M | 0.01% | +19.6% |
| 10 | RENAISSANCE TECHNOLOGIES LLC | $1.81M | 0.00% | -47.3% |
SEC Schedule 13D (activist) and 13G (passive) filings for OII. Filed when an investor acquires 5%+ ownership.
As of the latest SEC 13F filings, BlackRock, Inc. is the largest institutional holder of OII with a position worth $664.66M, representing 0.01% of their portfolio. In total, 11 institutional investors hold OII with a combined value of $1.29B.
In the most recent quarter, 2 funds opened a new position in OII. Additionally, 6 increased their holdings and 3 reduced their positions.
Institutional investors hold $1.29B worth of OII stock across 11 positions. The largest institutional holder is BlackRock, Inc. with $664.66M in holdings.
A 13F filing is a quarterly report required by the SEC from institutional investment managers with over $100 million in assets. It discloses their holdings in U.S. equities. For OII, these filings reveal which major funds are accumulating or reducing positions, providing insights into institutional sentiment.
Get notified when hedge funds change their OII positions.
Alpha = the manager's 3-year clone return minus the S&P 500. A skilled roster is a stronger tell than a crowded one — though even skilled managers' edge doesn't reliably survive the 13F disclosure lag. Why →
Last Close
$44.09
2026-10-21
YTD
+77.4%
68% of 52-week range