What does CUSIP H8817H100 represent in this 13F holders report?

CUSIP H8817H100 is the security identifier for RIG - Transocean Ltd. - Shares, $0.10 par value used to aggregate holder disclosures.

How many institutions held RIG - Transocean Ltd. - Shares, $0.10 par value in Q2 2025?

418 institutional investors reported RIG - Transocean Ltd. - Shares, $0.10 par value for Q2 2025. Use the holders table for investor-level position and value details.

Transocean Ltd. - Shares, $0.10 par value (RIG)

CUSIP: H8817H100

Q2 2025 13F Holders as of 30 Jun 2025

Security type / class: Equity / Shares, $0.10 par value
Total 13F shares: 600,402,432
Total 13F value: $1,555,215,783
Share change: -5,429,742
Put/Call ratio: 155%
SEC-reported price per share: $2.59
Number of holders: 418
Value change: -$26,519,287
Number of buys: 218
Number of sells: 146
Shares outstanding: 1,101,344,330

Security key

H8817H100

Report period

Q2 2025

Institutions

418

Top holders

RIG full security history Ownership snapshot Full 13F holder table Transocean Ltd. SEC filings Transocean Ltd. company facts Transocean Ltd. 13D/G history

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Ownership snapshot

Top reported holders of RIG - Transocean Ltd. - Shares, $0.10 par value (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader

BlackRock, Inc.

Disclosed value leader

VANGUARD GROUP INC

Comparable rows

15/15

Latest evidence

31 Mar 2025

13F 13D/G Lead comparable stake: 6.4% 13D/G row: BlackRock, Inc. Showing 1-6 of 15 holder rows.

Quick read

BlackRock, Inc. leads the comparable SEC ownership view at 6.4%.

15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens BlackRock, Inc.'s linked filing trail.

Comparable ownership Top 5

BlackRock, Inc. 6.4%

Capital World Investors 4.6%

PRIMECAP MANAGEMENT CO/CA/ 1.5%

VANGUARD GROUP INC 7.1%

DIMENSIONAL FUND ADVISORS LP 3.7%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-6 of 15 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
BlackRock, Inc.	13F 13D/G Company 13F 13D/G	6.4% from 13D/G	$229,201,892 72,303,437 shares	—	31 Mar 2025
Capital World Investors	13F 13D/G Company 13F 13D/G	4.6% from 13D/G	$116,178,725 36,649,440 shares	—	31 Mar 2025
PRIMECAP MANAGEMENT CO/CA/	13F 13D/G Company 13F 13D/G	1.5% from 13D/G	$170,660,346 53,836,071 shares	—	31 Mar 2025
VANGUARD GROUP INC	13F Company 13F	7.1%	$249,075,782 78,572,802 shares	—	31 Mar 2025
DIMENSIONAL FUND ADVISORS LP	13F Company 13F	3.7%	$128,893,779 40,660,439 shares	—	31 Mar 2025
AMERICAN CENTURY COMPANIES INC	13F Company 13F	1.9%	$67,673,464 21,348,095 shares	—	31 Mar 2025

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q2 2025

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

418

600,402,432

Rows available

418

Investor	Option	Weight %	Change %	SEC-reported value	* Price	Shares	Share Change	Activity	Report Period

^* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q2 2025 vs Q1 2025 Across Filers

Q1 2025 holders

402

Q2 2025 holders

418

Holder diff

Investor	Q1 2025 Shares	Q2 2025 Shares	Share Diff	Share Chg %	Q1 2025 value	Q2 2025 value	Value change	Value Chg %