RIG Institutional Ownership
Who owns Transocean Ltd. and what the big funds did with it last quarter, from every SEC 13F filing. 542 funds reported holding RIG at Jun 30, 2026, together owning 91.6% of the company.
- ●263 buying vs 230 selling
- ▲Held by funds +9.4 pts
- ●Funds holding -4
- ▲Superinvestors: 3 added, 2 cut
- ▲Put/call 1.73 to 1.50
What the filings show, not a forecast. Positions can be up to 45 days old and leave out short sales.
Funds holding and ownership
8 quartersQuarter over quarter
all 13F filers| Q2 2026 | This quarter | Q1 2026 | Change |
|---|---|---|---|
| Funds holding | 542 | 546 | −0.7% |
| In funds' top 10 | 8 | 13 | −38.5% |
| 13F shares | 1.02B | 918M | +11.5% |
| Held by funds | 91.6% | 82.2% | +9.4 pts |
| New positions | 74 | 131 | −43.5% |
| Increased | 189 | 171 | +10.5% |
| Reduced | 157 | 134 | +17.2% |
| Sold out | 73 | 63 | +15.9% |
| Calls (shares) | 9.8M | 10.8M | −9.5% |
| Puts (shares) | 15.8M | 17.1M | −8.0% |
| Put/call ratio | 1.50 | 1.73 | −12.9% |
Buyers vs sellers
adding or new vs cutting or sold outSuperinvestors in RIG
All superinvestors →
Who owns RIG
share of fund held shares- Index and passive funds33.6%
- Active managers and hedge funds51.4%
- Banks and brokers13.9%
- Pensions, insurers and other1.1%
The top 10 holders own 43.9% of all RIG shares that funds reported. Groups are our own grouping of filers by name.
Put/call ratio
funds' options, market makers left outAbove 1 means funds hold more puts than calls, a sign of hedging or bets on a fall. Options are valued at the underlying shares.
Filed so far for Q3 2026
131 funds changed their position- Assenagon Asset Management S.A.Trimmed−15.2M sh
- Canoe Financial LPSold out−8.7M sh
- Mackenzie Financial CorpTrimmed−3.5M sh
- Lancaster Investment ManagementNew+3M sh
- Counterpoint Mutual Funds LLCNew+1.7M sh
🔒 Free account: see all 20.
Top holders
Q2 2026| # | Fund | Of company | Shares | Value | Change |
|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 8.23% | 91.9M | $450M | +3.6M |
| 2 | Dimensional Fund Advisors LP | 4.57% | 51M | $249M | +2.2M |
| 3 | Vanguard Portfolio Management LLC | 4.41% | 49.3M | $241M | +2.4M |
| 4 | Two Sigma Investments, LP | 4.14% | 46.2M | $226M | −258K |
| 5 | Vanguard Capital Management LLC | 4.05% | 45.2M | $221M | +928K |
| 6 | D. E. Shaw & Co., Inc. | 3.74% | 41.8M | $204M | +2.5M |
| 7 | Slate Path Capital LP | 3.34% | 37.3M | $182M | +7.2M |
| 8 | Capital World Investors | 2.77% | 31M | $151M | +1.4M |
| 9 | Geode Capital Management, LLC | 2.56% | 28.6M | $140M | +5.1M |
| 10 | State Street Corp | 2.43% | 27.1M | $133M | +2.2M |
- UBS Group AG+20.3M sh+$99.4M
- Assenagon Asset Management S.A.+15.3M sh+$75M
- Renaissance Technologies LLC+11.4M sh+$55.7M
- Castle Hook Partners LP+10.5M sh+$51.2M
- Mackenzie Financial Corp+9.7M sh+$47.6M
- Point72 Asset Management, L.P.+8.8M sh+$42.9M
- Hrt Financial LP+8.1M sh+$39.6M
- Bridgewater Associates, LP+7.5M sh+$36.9M
- Marshall Wace, LLP−15M sh−$73.3M
- Driehaus Capital Management LLC−7.2M sh−$47.8M
- Tudor Investment Corp ET AL−5.3M sh−$35M
- Pilgrim Global Advisors LLC−6.5M sh−$32M
- Empyrean Capital Partners, LP−4.6M sh−$30.3M
- Millennium Management LLC−4.2M sh−$20.6M
- Trexquant Investment LP−3.1M sh−$20.4M
- Quadrature Capital Ltd−2.6M sh−$17.2M
RIG institutional ownership FAQ
Who owns the most RIG stock?
In Q2 2026 13F filings the largest holder of RIG was BlackRock, Inc., followed by Dimensional Fund Advisors LP and Vanguard Portfolio Management LLC. Index fund managers are usually the biggest holders of large companies.
What percentage of RIG is owned by institutions?
Funds that file 13F reports held 91.6% of RIG's shares at Jun 30, 2026, compared with 82.2% a quarter earlier. That counts every manager with more than $100 million in US stocks.
Are hedge funds buying RIG?
In Q2 2026, 263 funds bought RIG (74 of them new positions) and 230 sold (73 sold out completely). Among well known investors, 3 added and 2 cut. Our fund sentiment for RIG is bullish.
What is RIG's institutional put/call ratio?
Funds reported $78.7M of RIG puts against $52.3M of calls, a put/call ratio of 1.50 (1.73 the quarter before). Market makers and bank trading desks are left out, since their options are mostly hedges.
How current is this RIG ownership data?
13F filings show holdings at the end of each quarter and are due within 45 days, so positions can be up to six weeks old when they appear. We add each new filing within minutes, and the "filed so far" list shows funds that have already reported the next quarter.
For informational and educational purposes only. Not investment advice, and not a recommendation to buy or sell any security. Fund sentiment summarises what 13F filings show and is not a forecast. Holdings come from SEC Form 13F filings as reported and show positions at the end of the quarter, up to 45 days before the filing. A 13F leaves out short positions, cash, bonds and most foreign holdings. See all hedge fund holdings.