Who owns RIGWhat RIG owns — n/a

Who owns Transocean Ltd.?

Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.

Institutional ownership of RIG from SEC Form 13F filings across 736 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.

As of the 2026-06-30 reporting period, 736 institutions disclosed 1.25B shares of Transocean Ltd. worth $6.46B; the largest disclosed holder is BlackRock, Inc.. Source: SEC Form 13F filings, parsed by EvidInvest.

736

13F holders

$6.46B

value, 2026 filers

1.25B

shares disclosed

new positions (2026 filers)

Top institutional holders

ordered by shares owned · positions as of 2026-06-30 · % of fund = share of the manager's own book · % of co. = share of RIG's shares outstanding

#	Manager	Shares	Value	% of fund	% of co.	Δ shares QoQ
1	BlackRock, Inc.	88.4M	$585.9M	0.0%	—	—
2	VANGUARD GROUP INC	97.0M	$400.6M	0.0%	—	—
3	BlackRock Inc.	64.9M	$347.0M	0.0%	—	—
4	DIMENSIONAL FUND ADVISORS LP	48.8M	$323.7M	0.1%	—	—
5	TWO SIGMA INVESTMENTS, LP	46.5M	$308.1M	0.2%	—	—
6	VANGUARD CAPITAL MANAGEMENT LLC	44.3M	$293.5M	0.0%	—	—
7	D. E. Shaw & Co., Inc.	39.3M	$260.3M	0.2%	—	—
8	Slate Path Capital LP	30.1M	$199.3M	3.0%	—	—
9	Capital World Investors	29.6M	$196.1M	0.0%	—	—
10	BlackRock Institutional Trust Company, N.A.	11.6M	$171.4M	0.0%	—	—
11	STATE STREET CORP	25.0M	$165.6M	0.0%	—	—
12	Pilgrim Global Advisors LLC	23.9M	$158.5M	20.5%	—	—
13	GEODE CAPITAL MANAGEMENT, LLC	23.5M	$155.6M	0.0%	—	—
14	AMERICAN CENTURY COMPANIES INC	22.8M	$150.9M	0.1%	—	—
15	MORGAN STANLEY	21.7M	$143.8M	0.0%	—	—
16	VAN ECK ASSOCIATES CORP	21.1M	$140.1M	0.1%	—	—
17	Dalal Street, LLC	20.4M	$135.2M	32.0%	—	—
18	VOLORIDGE INVESTMENT MANAGEMENT, LLC	16.5M	$109.7M	0.4%	—	—
19	BlackRock Fund Advisors	7.4M	$109.1M	0.0%	—	—
20	MARSHALL WACE, LLP	16.0M	$106.4M	0.1%	—	—
21	Elliott Investment Management L.P.	15.6M	$103.6M	0.5%	—	—
22	SUSQUEHANNA INTERNATIONAL GROUP, LLP	15.1M	$100.4M	0.0%	—	—
23	TWO SIGMA ADVISERS, LP	22.2M	$91.7M	0.2%	—	—
24	GOLDMAN SACHS GROUP INC	12.9M	$85.5M	0.0%	—	—
25	UBS AG	2.5M	$78.6M	0.1%	—	—

Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.