Transocean Ltd. (RIG) ownership: Top institutional holder: BlackRock, Inc. ($585.90M). Insider activity: Net Seller (5 buys, 15 sells). SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| BlackRock, Inc. | 88371248.00 | $585.90M | 2026-03-31 |
| VANGUARD GROUP INC | 97006263.00 | $400.64M | 2025-12-31 |
| DIMENSIONAL FUND ADVISORS LP | 48819576.00 | $323.68M | 2026-03-31 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 46862730.00 | $310.70M | 2026-03-31 |
| TWO SIGMA INVESTMENTS, LP | 46463736.00 | $308.05M | 2026-03-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 44272423.00 | $293.53M | 2026-03-31 |
| D. E. Shaw & Co., Inc. | 39262599.00 | $260.31M | 2026-03-31 |
| Slate Path Capital LP | 30062100.00 | $199.31M | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Buy | null | 2026-05-26 | |
| Buy | null | 2026-05-26 | |
| Buy | null | 2026-05-26 | |
| Sell | null | 2026-05-22 | |
| Sell | null | 2026-05-22 | |
| Sell | null | 2026-05-22 | |
| Sell | null | 2026-05-22 | |
| Sell | null | 2026-05-22 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.