RIG Transocean Ltd.: institutional ownership and insider trading
594 funds reported holding $5.69B of Transocean Ltd. in their latest 13F filings; in Q2 2026 funds net bought $451M, with 72 new positions and 72 funds selling out; over the last 12 months insiders bought $18.3M and sold $5.04M on the open market.
Famous investors holding RIG
- Mohnish Pabrai (Pabrai Investment Funds): $99.7M, 30.5% of the portfolio
- Paul Singer (Elliott Investment Management): $76.4M, 0.3% of the portfolio
- Two Sigma (Two Sigma Investments): $226M, 0.2% of the portfolio
- Ray Dalio (Bridgewater Associates): $38.9M, 0.2% of the portfolio
- D. E. Shaw (D. E. Shaw & Co.): $206M, 0.1% of the portfolio
- Renaissance Technologies (Renaissance Technologies): $71.0M, 0.1% of the portfolio
- Ken Griffin (Citadel Advisors): $30.9M, 0.0% of the portfolio
- Izzy Englander (Millennium Management): $2.80M, 0.0% of the portfolio
Largest institutional holders of RIG
- BlackRock, Inc. (BLK) — $450M
- VANGUARD GROUP INC — $401M
- DIMENSIONAL FUND ADVISORS LP — $249M
- VANGUARD PORTFOLIO MANAGEMENT LLC — $241M
- TWO SIGMA INVESTMENTS, LP — $226M
- VANGUARD CAPITAL MANAGEMENT LLC — $221M
- D. E. Shaw & Co., Inc. — $206M
- Slate Path Capital LP — $182M
- SUSQUEHANNA INTERNATIONAL GROUP, LLP — $175M
- Capital World Investors — $151M
Recent RIG insider trades
- Jul 2, 2026: Deaton Chad C bought 35,000 shares ($173K)
- May 21, 2026: Long Brady K sold 81,741 shares ($609K)
- Mar 4, 2026: Mackenzie Roderick James sold 78,370 shares ($498K)
- Jan 27, 2026: Long Brady K sold 115,378 shares ($577K)
Members of Congress trading RIG
- Sep 14, 2026: Lisa C. McClain bought $15.0K–$50.0K
5%+ owners
- Frederik W. Mohn: 8.8% (Schedule 13D/A, filed Feb 11, 2026)
- BlackRock, Inc.: 6.4% (Schedule 13G/A, filed Apr 23, 2025)