Ranked by reported Q2 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. | 91.9M | $449.5M | +4.0% | 9.044% | 0.01% |
| 2 | DIMENSIONAL FUND ADVISORS LP | 51.0M | $249.5M | +4.5% | 5.018% | 0.05% |
| 3 | VANGUARD PORTFOLIO MANAGEMENT LLC | 49.3M | $241.1M | +5.2% | 4.850% | 0.01% |
| 4 | TWO SIGMA INVESTMENTS, LP | 46.2M | $225.9M | -0.6% | 4.546% | 0.16% |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | 45.2M | $221.0M | +2.1% | 4.447% | 0.00% |
| 6 | D. E. Shaw & Co., Inc. | 42.2M | $206.3M | +4.1% | 4.152% | 0.10% |
| 7 | Slate Path Capital LP | 37.3M | $182.2M | +24.0% | 3.666% | 2.52% |
| 8 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 35.7M | $174.8M | +6.3% | 3.517% | 0.01% |
| 9 | Capital World Investors | 31.0M | $151.5M | +4.7% | 3.047% | 0.02% |
| 10 | GEODE CAPITAL MANAGEMENT, LLC | 28.6M | $139.7M | +21.7% | 2.810% | 0.01% |
| 11 | STATE STREET CORP | 27.1M | $132.8M | +8.7% | 2.671% | 0.00% |
| 12 | MORGAN STANLEY | 26.7M | $130.5M | +23.1% | 2.626% | 0.01% |
| 13 | UBS Group AG | 26.7M | $130.4M | +319.8% | 2.624% | 0.02% |
| 14 | AMERICAN CENTURY COMPANIES INC | 22.9M | $112.2M | +0.8% | 2.257% | 0.05% |
| 15 | Dalal Street, LLC | 20.4M | $99.7M | +0.0% | 2.007% | 30.53% |
| 16 | VAN ECK ASSOCIATES CORP | 19.8M | $96.8M | -6.3% | 1.947% | 0.06% |
| 17 | GOLDMAN SACHS GROUP INC | 18.1M | $88.4M | +39.3% | 1.779% | 0.01% |
| 18 | Pilgrim Global Advisors LLC | 17.4M | $85.0M | -27.3% | 1.710% | 18.23% |
| 19 | Elliott Investment Management L.P. | 15.6M | $76.4M | 0.0% | 1.537% | 0.34% |
| 20 | VOLORIDGE INVESTMENT MANAGEMENT, LLC | 14.8M | $72.3M | -10.6% | 1.456% | 0.31% |
| 21 | RENAISSANCE TECHNOLOGIES LLC | 14.5M | $71.0M | +363.4% | 1.429% | 0.10% |
| 22 | Point72 Asset Management, L.P. | 14.3M | $70.1M | +149.6% | 1.411% | 0.08% |
| 23 | GENDELL JEFFREY L | 13.9M | $67.7M | +18.4% | 1.363% | 0.60% |
| 24 | KEYBANK NATIONAL ASSOCIATION/OH | 13.0M | $63.8M | +3.0% | 1.283% | 0.21% |
| 25 | FIL Ltd | 11.6M | $56.7M | +3.2% | 1.142% | 0.04% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in RIG — a direct measure of their conviction.
Filings activity in RIG during Q2 2026, grouped by how each filer changed its position.
8 quarters of 13F filings · Δ columns show change vs prior quarter
| Quarter | Inst. Holders | Δ Holders | Ownership % | Δ Ownership | Total 13F Value | Δ Value |
|---|---|---|---|---|---|---|
| Q2 2026 | 543 | +0.6% | 105.31% | +9.13 pp | $5.20B | 17% |
| Q1 2026 | 540 | +16% | 96.18% | +14.85 pp | $6.22B | +90% |
| Q4 2025 | 467 | +3.8% | 81.33% | +2.55 pp | $3.27B | +38% |
| Q3 2025 | 450 | +8.7% | 78.78% | +3.79 pp | $2.37B | +26% |
| Q2 2025 | 414 | +4.3% | 74.99% | 1.39 pp | $1.88B | 0.0% |
| Q1 2025 | 397 | 7.2% | 76.38% | 0.78 pp | $1.88B | 15% |
| Q4 2024 | 428 | +4.6% | 77.16% | 0.80 pp | $2.21B | 14% |
| Q3 2024 | 409 | — | 77.96% | — | $2.56B | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying RIG stock.
Based on Q2 2026 13F filings, institutional ownership of Transocean Ltd. stands at 105.3%, held across 543 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of RIG, with approximately 91,927,924 shares worth $0.45B as of Q2 2026.
Yes — 4 widely-followed marquee investors appear among the top 25 institutional holders of RIG, including TWO SIGMA INVESTMENTS, LP, SUSQUEHANNA INTERNATIONAL GROUP, LLP, RENAISSANCE TECHNOLOGIES LLC, Point72 Asset Management, L.P..
Our composite Smart Money Score for RIG is 71 out of 100 (Bullish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
72 institutions opened new positions in RIG during Q2 2026, while 71 fully exited. 68 added to existing positions and 384 trimmed.
RIG institutional ownership rose by 9.13 percentage points quarter-over-quarter, with a net change of +3 holders.
The top 10 institutions account for 43.1% of all reported 13F value in RIG, and the top 25 account for 69.2%.
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