Transocean Ltd. (RIG)

Corporate structure

183 entities across 27 jurisdictions, 93 in offshore financial centres. Read directly from the company’s own 10-K EX-21 filed 2026-02-23 — see the exhibit.

Financial health

Two standard screens, computed from the XBRL in FY2025 against FY2024. Every test shows the numbers behind it — a score with its inputs hidden is a number you cannot check.

Six-year record

Ownership flow

15 institutions tracked — 11 added, 3 reduced.

From 13F filings, which cover institutions managing over $100m and are filed up to 45 days after the quarter ends — so this is a considered position, not a live one, and it is not the whole shareholder register.

Other drilling oil & gas wells companies

Transocean Ltd. files under SIC 1381 — all 6 drilling oil & gas wells companies compared on assets and F-score.

Questions about Transocean Ltd.

How many subsidiaries does Transocean Ltd. file with the SEC?

183, listed in its most recent exhibit 21. They are incorporated across 27 jurisdictions, led by Delaware, Bermuda, Norway. 93 of them sit in offshore financial centres. That exhibit is filed with the company's annual report and is the company's own list, not an estimate.

Is Transocean Ltd. financially healthy?

Transocean Ltd. scores 4 out of 7 on the Piotroski F-score. Only 7 of the nine tests could be computed from what it filed; the rest need a prior year it has not reported. Every test and the numbers behind it are shown above, so the arithmetic is checkable rather than something you have to take on trust.

Who are the largest institutional holders of Transocean Ltd.?

Among the managers tracked here, the biggest positions as of the 2026-Q2 13F filings are BlackRock, Inc. (adding), Capital World Investors (adding), GEODE CAPITAL MANAGEMENT, LLC (adding). Direction is the change in share count against that manager's own previous filing; managers with no prior filing are left out rather than counted as new buyers.