613 institutions reported holding $5.36B of TRANSOCEAN LTD (RIG) in SEC 13F filings for 2026-06-30. Largest institutional holders: VANGUARD GROUP INC ($502.2M), BlackRock, Inc. ($449.5M), DIMENSIONAL FUND ADVISORS LP ($249.5M), TWO SIGMA INVESTMENTS, LP ($225.9M), D. E. Shaw & Co., Inc. ($206.3M). Source: SEC Form 13F.
Source: SEC Form 13F filings · as of 2026-06-30