OII
Oceaneering International, Inc. · Energy · Oil & Gas Equipment & Services
Momentum inputs (comparable managers):
holder breadth -6.2% ·
share flow +1.4% ·
net new positions -6.7%
— formula
Concentrated accumulation — rising shares among fewer holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 2025
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 114 | +3 | 70.59M | $2.86B | +13 | −10 |
| Q1 2026 | 114 | +9 | 69.23M | $2.45B | +14 | −5 |
| Q4 2025 | 104 | +1 | 76.40M | $1.84B | +1 | — |
| Q3 2025 | 17 | 0 | 40.72M | $1.01B | — | −1 |
| Q2 2025 | 15 | -1 | 38.01M | $787.64M | +1 | −2 |
| Q1 2025 | 13 | +2 | 9.06M | $197.65M | +2 | — |
| Q4 2024 | 11 | +1 | 8.61M | $224.68M | +3 | −2 |
| Q3 2024 | 9 | +1 | 3.59M | $89.35M | +1 | — |
| Q2 2024 | 8 | — | 3.61M | $85.51M | — | — |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 15.76M | — | $326.49M | 0.0% | n/c | 1 | SEC ↗ |
| 2 | BlackRock ✦ (passive) | 15.76M | — | $326.49M | 0.0% | n/c | 1 | SEC ↗ |
| 3 | BlackRock ✦ (passive) | 15.76M | — | $326.49M | 0.0% | n/c | 1 | SEC ↗ |
| 4 | BlackRock ✦ (passive) | 15.76M | — | $326.49M | 0.0% | n/c | 1 | SEC ↗ |
| 5 | BlackRock ✦ (passive) | 15.76M | — | $326.49M | 0.0% | n/c | 1 | SEC ↗ |
| 6 | BlackRock ✦ (passive) | 15.76M | — | $326.49M | 0.0% | n/c | 1 | SEC ↗ |
| 7 | BlackRock ✦ (passive) | 15.76M | — | $326.49M | 0.0% | n/c | 1 | SEC ↗ |
| 8 | BlackRock ✦ (passive) | 15.76M | — | $326.49M | 0.0% | n/c | 1 | SEC ↗ |
| 9 | BlackRock ✦ (passive) | 15.76M | — | $326.49M | 0.0% | n/c | 1 | SEC ↗ |
| 10 | BlackRock ✦ (passive) | 15.76M | — | $326.49M | 0.0% | n/c | 1 | SEC ↗ |
| 11 | BlackRock ✦ (passive) | 15.76M | — | $326.49M | 0.0% | n/c | 1 | SEC ↗ |
| 12 | BlackRock ✦ (passive) | 15.76M | — | $326.49M | 0.0% | n/c | 1 | SEC ↗ |
| 13 | BlackRock ✦ (passive) | 15.76M | — | $326.49M | 0.0% | n/c | 1 | SEC ↗ |
| 14 | BlackRock ✦ (passive) | 15.76M | — | $326.49M | 0.0% | n/c | 1 | SEC ↗ |
| 15 | The Vanguard Group ✦ (passive) | 12.39M | — | $256.75M | 0.0% | n/c | 1 | SEC ↗ |
| 16 | The Vanguard Group ✦ (passive) | 12.39M | — | $256.75M | 0.0% | n/c | 1 | SEC ↗ |
| 17 | The Vanguard Group ✦ (passive) | 12.39M | — | $256.75M | 0.0% | n/c | 1 | SEC ↗ |
| 18 | The Vanguard Group ✦ (passive) | 12.39M | — | $256.75M | 0.0% | n/c | 1 | SEC ↗ |
| 19 | The Vanguard Group ✦ (passive) | 12.39M | — | $256.75M | 0.0% | n/c | 1 | SEC ↗ |
| 20 | State Street Global Advisors ✦ (passive) | 4.81M | -0.8% | $99.68M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 21 | Geode Capital Management ✦ (passive) | 2.25M | -3.3% | $46.61M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 22 | Geode Capital Management ✦ (passive) | 2.25M | -3.3% | $46.61M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 23 | Millennium Management ✦ | 732.37K | +619.2% | $15.17M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 24 | Fisher Asset Management ✦ | 573.33K | +8.1% | $11.88M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 25 | GAMCO Investors ✦ | 350.44K | -5.3% | $7.26M | 0.1% | ▼ Trim | 5 | SEC ↗ |
| 26 | Fidelity (FMR) ✦ | 284.77K | — | $5.90M | 0.0% | n/c | 1 | SEC ↗ |
| 27 | Fidelity (FMR) ✦ | 284.77K | — | $5.90M | 0.0% | n/c | 1 | SEC ↗ |
| 28 | Fidelity (FMR) ✦ | 284.77K | — | $5.90M | 0.0% | n/c | 1 | SEC ↗ |
| 29 | Fidelity (FMR) ✦ | 284.77K | — | $5.90M | 0.0% | n/c | 1 | SEC ↗ |
| 30 | AQR Capital Management ✦ | 280.18K | +72.5% | $5.81M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 31 | AQR Capital Management ✦ | 280.18K | +72.5% | $5.81M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 32 | AQR Capital Management ✦ | 280.18K | +72.5% | $5.81M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 33 | AQR Capital Management ✦ | 280.18K | +72.5% | $5.81M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 34 | Point72 Asset Management ✦ | 175.00K | New | $3.63M | 0.0% | New | 1 | SEC ↗ |
| 35 | D. E. Shaw & Co. ✦ | 94.13K | -38.5% | $1.95M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 36 | T. Rowe Price ✦ | 88.95K | +2.9% | $1.84M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 37 | Renaissance Technologies ✦ | 85.60K | +58.2% | $1.77M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 38 | Norges Bank ✦ (passive) | 71.66K | -22.0% | $1.48M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 39 | Citadel Advisors ✦ | 67.92K | -45.3% | $1.41M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 40 | Citadel Advisors ✦ | 67.92K | -45.3% | $1.41M | 0.0% | ▼ Trim | 2 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Point72 Asset Management | $3.63M | 0.0% |
Exited
| Marshall Wace | $3.88M | was 0.0% |
| Gotham Asset Management | $723,460 | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 362 holders, 101.15M shares, $3.43B reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.
Open-market purchases (P)
No open-market insider purchases in our coverage window.
Open-market sales (S)
Director · 10.00K sh · $483,690
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology