Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in RIG held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 88.4M | $585.9M | +0.3% | 9.784% | 0.01% |
| 2 | DIMENSIONAL FUND ADVISORS LP | 48.8M | $323.7M | +12.3% | 5.405% | 0.07% |
| 3 | VANGUARD PORTFOLIO MANAGEMENT LLC | 46.9M | $310.7M | β | 5.188% | 0.02% |
| 4 | TWO SIGMA INVESTMENTS, LP | 46.5M | $308.1M | +91.7% | 5.144% | 0.25% |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | 44.3M | $293.5M | β | 4.902% | 0.01% |
| 6 | D. E. Shaw & Co., Inc. | 40.5M | $268.8M | +126.5% | 4.488% | 0.25% |
| 7 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 33.6M | $222.9M | +27.5% | 3.721% | 0.03% |
| 8 | Slate Path Capital LP | 30.1M | $199.3M | β | 3.328% | 2.96% |
| 9 | Capital World Investors | 29.6M | $196.1M | +88.8% | 3.274% | 0.03% |
| 10 | STATE STREET CORP | 25.0M | $165.6M | +1.0% | 2.766% | 0.01% |
| 11 | Pilgrim Global Advisors LLC | 23.9M | $158.5M | -24.7% | 2.647% | 20.53% |
| 12 | GEODE CAPITAL MANAGEMENT, LLC | 23.5M | $155.6M | +3.0% | 2.599% | 0.01% |
| 13 | AMERICAN CENTURY COMPANIES INC | 22.8M | $150.9M | -17.2% | 2.520% | 0.08% |
| 14 | MORGAN STANLEY | 21.7M | $143.8M | -12.5% | 2.402% | 0.01% |
| 15 | Dalal Street, LLC | 20.4M | $135.2M | -24.6% | 2.258% | 31.97% |
| 16 | VOLORIDGE INVESTMENT MANAGEMENT, LLC | 16.5M | $109.7M | β | 1.832% | 0.44% |
| 17 | MARSHALL WACE, LLP | 16.0M | $106.4M | +42120.4% | 1.776% | 0.12% |
| 18 | Elliott Investment Management L.P. | 15.6M | $103.6M | β | 1.730% | 0.65% |
| 19 | GOLDMAN SACHS GROUP INC | 13.0M | $86.0M | -23.9% | 1.436% | 0.01% |
| 20 | KEYBANK NATIONAL ASSOCIATION/OH | 12.7M | $83.9M | +3.3% | 1.401% | 0.31% |
| 21 | GENDELL JEFFREY L | 11.7M | $77.6M | +8.4% | 1.295% | 1.06% |
| 22 | FIL Ltd | 11.2M | $74.5M | +58296.9% | 1.244% | 0.06% |
| 23 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 9.8M | $65.0M | -1.9% | 1.086% | 0.01% |
| 24 | CITADEL ADVISORS LLC | 9.1M | $60.1M | -27.8% | 1.004% | 0.03% |
| 25 | BANK OF AMERICA CORP /DE/ | 8.6M | $57.0M | -44.5% | 0.952% | 0.00% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). β% of Fundβ shows how much of that investorβs total 13F portfolio is invested in RIG β a direct measure of their conviction.
Filings activity in RIG during Q1 2026, grouped by how each filer changed its position.
Institutions that opened a new RIG position in Q1 2026
Institutions that fully closed their RIG position in Q1 2026
8 quarters of 13F filings Β· Ξ columns show change vs prior quarter
| Quarter | Inst. Holders | Ξ Holders | Ownership % | Ξ Ownership | Total 13F Value | Ξ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 520 | +14% | 110.15% | +50.63 pp | $6.01B | +85% |
| Q4 2025 | 456 | +3.9% | 59.52% | +16.65 pp | $3.25B | +39% |
| Q3 2025 | 439 | +6.0% | 42.87% | +8.40 pp | $2.34B | +24% |
| Q2 2025 | 414 | +4.3% | 34.47% | 0.01 pp | $1.88B | 0.0% |
| Q1 2025 | 397 | 7.2% | 34.48% | 5.95 pp | $1.88B | 15% |
| Q4 2024 | 428 | +4.6% | 40.43% | 6.44 pp | $2.21B | 14% |
| Q3 2024 | 409 | +1.2% | 46.87% | 17.16 pp | $2.56B | 27% |
| Q2 2024 | 404 | β | 64.03% | β | $3.49B | β |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Ξ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying RIG stock.
Based on Q1 2026 13F filings, institutional ownership of Transocean Ltd. stands at 110.1%, held across 520 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of RIG, with approximately 88,371,248 shares worth $0.59B as of Q1 2026.
Yes β 3 widely-followed marquee investors appear among the top 25 institutional holders of RIG, including TWO SIGMA INVESTMENTS, LP, SUSQUEHANNA INTERNATIONAL GROUP, LLP, CITADEL ADVISORS LLC.
Our composite Smart Money Score for RIG is 79 out of 100 (Bullish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
140 institutions opened new positions in RIG during Q1 2026, while 76 fully exited. 336 added to existing positions and 41 trimmed.
RIG institutional ownership rose by 50.63 percentage points quarter-over-quarter, with a net change of +64 holders.
The top 10 institutions account for 47.8% of all reported 13F value in RIG, and the top 25 account for 73.9%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
Transocean Ltd. (RIG) Institutional Ownership