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RIG · Transocean Ltd.

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$5.80 +0.06 (+1.05%) At close · Aug 28
Market Cap
$6.48B
Shares
1.12B

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 542
Total Value: $5,234,993,114
Total Shares: 1,070,557,965
Showing 1–100 of 585 holdings by value · page 1 of 6

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 542 13F filers · Δ vs Mar 31, 2026
Top Holder
8.6%
Sep 2023 → Jun 2026 · range 8.6% – 12.6%
−0.4 pts
Top 5
26.5%
Sep 2023 → Jun 2026 · range 26.5% – 45.4%
−1.5 pts
Top 10
42.8%
Sep 2023 → Jun 2026 · range 42.8% – 60.2%
−1.4 pts
HHI
272
Sep 2023 → Jun 2026 · range 272 – 521
Broadly held−13

Quarterly Activity

vs Mar 31, 2026
New
75
Increased
191
Decreased
161
Sold Out
85
Unchanged
115
Holder count: -10
Institutional value: -19.4%
Shares held: +9.2%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 585
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 1451505 CUSIP H8817H100 13F (30d) 414 filings 407 filers Visit website Investor relations