Transocean
RIG · NYSE
Who owns RIG
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 45.0% of RIG’s shares.
- Perestroika (Cyprus), Ltd.8.7%
- BlackRock Institutional Trust Company, N.A.6.7%
- Dimensional Fund Advisors, L.P.4.6%
- Vanguard Portfolio Management, LLC4.4%
- Next 6 largest institutions20.6%
- All other shareholders55.0%
| Holder | Shares | % of shares |
|---|---|---|
| Perestroika (Cyprus), Ltd. | 96.57M | 8.65% |
| BlackRock Institutional Trust Company, N.A. | 74.89M | 6.71% |
| Dimensional Fund Advisors, L.P. | 51.01M | 4.57% |
| Vanguard Portfolio Management, LLC | 49.30M | 4.42% |
| Two Sigma Investments, LP | 46.34M | 4.15% |
| Vanguard Capital Management, LLC | 45.20M | 4.05% |
| D. E. Shaw & Co., L.P. | 41.79M | 3.74% |
| Slate Path Capital LP | 37.27M | 3.34% |
| Capital World Investors | 30.97M | 2.77% |
| Geode Capital Management, L.L.C. | 28.56M | 2.56% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| Vanguard Total Stock Market Index Fund | 31.97M | 2.86% |
| iShares Russell 2000 ETF | 25.37M | 2.27% |
| Avantis US Small Cap Value ETF | 25.12M | 2.25% |
| AzValor Internacional, FI | 24.24M | 2.17% |
| Vanguard Small-Cap Index Fund | 23.11M | 2.07% |
Insider trades
Form 4 filings by officers, directors and large holders
Over the last 6 months, insiders bought $173.25K (1 trade) and sold $608.97K (1 trade) of RIG on the open market.
| Insider | Type | Shares | Value |
|---|---|---|---|
| DEATON CHAD C | Buy | 35.00K | $173.25K |
| Lacey William F. | Tax withholding | 20.93K | $140.26K |
| Mohn Frederik Wilhelm | Tax withholding | 25.60K | $171.50K |
| DEATON CHAD C | Tax withholding | 20.93K | $140.24K |
| Lacey William F. | Award | 30.43K | — |
| Lacey William F. | Option exercise | 82.35K | $560.82K |
| Mohn Frederik Wilhelm | Award | 30.43K | — |
| Mohn Frederik Wilhelm | Option exercise | 82.35K | $560.82K |
| Curado Frederico F. | Award | 30.43K | — |
| Barker Glyn Anthony | Award | 30.43K | — |
Congressional trades
Disclosed by members of Congress over the last 12 months
| Member | Type | Amount | Traded |
|---|---|---|---|
| Lisa McClainHouse | Purchase | $15K–$50K | Sep 14, 2026 |
Short interest
Settled Sep 30, 2026
- Shares short
- 299.02M
- Days to cover
- 6.88
- % of shares outstanding
- 26.78%
- Average daily volume
- 43.48M
- Change since last report
- +7.7%
Information on this page is provided for informational purposes only and is not a recommendation to buy, sell or hold any security. Investing involves risk, including possible loss of principal. Market data is delayed at least 15 minutes and is provided without warranty. Analyst ratings, price targets and company data come from third-party sources. Past performance does not guarantee future results.