13F reference period
Q2 2026
Security Snapshot
Transocean Ltd. - Shares, $0.10 par value (RIG) Institutional Ownership
CUSIP: H8817H100
13F Institutional Holders and Ownership History from Q1 2014 to Q3 2026
Institutions Reporting
538
Shares (Excl. Options)
997.58M
Full value: 997,584,005 · shares · 30 Jun 2026Price
$4.89
The headline uses the Q2 2026 reference period after its reporting deadline. Available reports may still be incomplete or amended. Newer periods in the history table contain incoming reports and may be incomplete.
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- Security type / class
- Equity / Shares, $0.10 par value
- Symbol
- RIG on NYSE
- All holders as of 30 Jun 2026
- Q2 2026
- Total 13F shares
- 997,584,005
- Total 13F value
- $4,883,488,460
- Portfolio coverage rank
- 0.01%
- Share change
- +94,624,660
- Value change
- +$404,442,459
- Number of holders
- 538
- Shares outstanding
- 1,101,344,330
- SEC-reported price per share
- $5.65
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
2 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Filing notes and source
Key facts
- RIG - Transocean Ltd. - Shares, $0.10 par value is tracked under CUSIP H8817H100.
- 538 institutions reported positions in Q2 2026.
- 4 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 539 to 538 between Q1 2026 and Q2 2026.
- SEC-reported value moved from to
$6.01B
Full value: $6,013,062,343 · USD · 31 Mar 2026.$4.88B
Full value: $4,883,488,460 · USD · 30 Jun 2026
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 538 institutions filings for Q2 2026.
Security key
H8817H100
13F reference period
Q2 2026
13F holders
538
13D/G owners
4
CIK / CUSIP context first
Open Q2 2026 holders
RIG full holder history
Transocean Ltd. SEC filings
Transocean Ltd. company facts
Transocean Ltd. insider transactions
Transocean Ltd. 13D/G history
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP H8817H100:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
4
Security
RIG
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| Mohn Frederik Wilhelm | 8.8% | -13% | $400,272,583 | +$6,195,000 | 96,918,301 | +1.6% | Frederik W. Mohn | 09 Feb 2026 |
| BlackRock, Inc. | 6.4% | $123,458,727 | 56,117,603 | BlackRock, Inc. | 31 Mar 2025 | |||
| Capital World Investors | 4.6% | -15% | $88,489,751 | -$17,683,721 | 40,222,614 | -17% | Capital World Investors | 31 Dec 2024 |
| PRIMECAP MANAGEMENT CO/CA/ | 1.5% | $37,542,425 | 13,126,722 | PRIMECAP MANAGEMENT CO/CA/ | 30 Jun 2025 |
As of 30 Jun 2026,
538
institutional investors reported holding
shares of
Transocean Ltd. - Shares, $0.10 par value (RIG).
This represents
91%
of the company’s total
outstanding shares.
997.58M
Full value: 997,584,005 · shares · 30 Jun 20261.1B
Full value: 1,101,344,330 · shares · Stored outstanding share count13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
64%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| BlackRock, Inc. | 8.3% | 91,927,924 | +4% | 0.01% | $449,527,549 |
| DIMENSIONAL FUND ADVISORS LP | 4.6% | 51,009,878 | +4.5% | 0.05% | $249,450,767 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 4.5% | 49,296,587 | +5.2% | 0.01% | $241,060,310 |
| TWO SIGMA INVESTMENTS, LP | 4.2% | 46,205,304 | -0.56% | 0.17% | $225,943,937 |
| VANGUARD CAPITAL MANAGEMENT LLC | 4.1% | 45,200,594 | +2.1% | 0% | $221,030,905 |
| D. E. Shaw & Co., Inc. | 3.8% | 41,793,600 | +6.4% | 0.13% | $204,370,704 |
| Slate Path Capital LP | 3.4% | 37,266,300 | +24% | 2.5% | $182,232,207 |
| Capital World Investors | 2.8% | 30,973,850 | +4.7% | 0.02% | $151,462,127 |
| GEODE CAPITAL MANAGEMENT, LLC | 2.6% | 28,561,101 | +22% | 0.01% | $139,686,758 |
| STATE STREET CORP | 2.5% | 27,148,850 | +8.7% | 0% | $132,757,877 |
| MORGAN STANLEY | 2.4% | 26,692,648 | +23% | 0.01% | $130,527,057 |
| UBS Group AG | 2.4% | 26,372,754 | +336% | 0.02% | $128,962,768 |
| AMERICAN CENTURY COMPANIES INC | 2.1% | 22,939,135 | +0.79% | 0.05% | $112,172,371 |
| Dalal Street, LLC | 1.9% | 20,398,659 | +0.03% | 31% | $99,749,443 |
| VAN ECK ASSOCIATES CORP | 1.8% | 19,794,432 | -6.4% | 0.06% | $96,794,773 |
| PILGRIM GLOBAL ADVISORS LLC | 1.6% | 17,377,307 | -27% | 18% | $84,975,031 |
| GOLDMAN SACHS GROUP INC | 1.5% | 16,798,179 | +30% | 0.01% | $82,143,095 |
| Elliott Investment Management L.P. | 1.4% | 15,626,834 | 0% | 0.53% | $76,415,218 |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC | 1.3% | 14,795,082 | -11% | 0.31% | $72,347,951 |
| RENAISSANCE TECHNOLOGIES LLC | 1.3% | 14,527,153 | +363% | 0.1% | $71,037,778 |
| Point72 Asset Management, L.P. | 1.3% | 14,172,810 | +162% | 0.11% | $69,305,041 |
| GENDELL JEFFREY L | 1.3% | 13,853,533 | +18% | 0.61% | $67,743,777 |
| KEYBANK NATIONAL ASSOCIATION/OH | 1.2% | 13,040,146 | +3% | 0.21% | $63,766,343 |
| FIL Ltd | 1.1% | 11,603,322 | +3.2% | 0.04% | $56,740,245 |
| BANK OF AMERICA CORP /DE/ | 1% | 11,108,135 | +29% | 0% | $54,318,780 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
51
Headline period
Q2 2026
Rows shown
1-25 of 51
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q3 | 147,484,201 | $773,538,467 | -$34,359,869 | $5.24 | 192 |
| 2026 Q2 | 997,584,005 | $4,883,488,460 | +$404,442,459 | $4.89 | 538 |
| 2026 Q1 | 907,331,915 | $6,013,062,343 | +$987,115,445 | $6.63 | 539 |
| 2025 Q4 | 771,829,300 | $3,187,808,247 | +$151,201,850 | $4.13 | 466 |
| 2025 Q3 | 748,843,862 | $2,336,415,102 | +$470,012,014 | $3.12 | 446 |
| 2025 Q2 | 600,402,432 | $1,555,215,783 | -$26,519,287 | $2.59 | 418 |
| 2025 Q1 | 605,500,336 | $1,919,496,140 | -$14,393,262 | $3.17 | 402 |
| 2024 Q4 | 609,720,063 | $2,286,338,730 | -$10,536,398 | $3.75 | 438 |
| 2024 Q3 | 605,032,090 | $2,570,118,382 | -$18,923,418 | $4.25 | 417 |
| 2024 Q2 | 602,231,084 | $3,223,214,035 | +$276,475,185 | $5.35 | 411 |
| 2024 Q1 | 548,361,294 | $3,443,769,240 | -$5,648,253 | $6.28 | 419 |
| 2023 Q4 | 547,216,208 | $3,474,784,440 | -$36,782,804 | $6.35 | 423 |
| 2023 Q3 | 539,993,633 | $4,431,352,889 | +$218,553,775 | $8.21 | 422 |
| 2023 Q2 | 509,700,039 | $3,572,411,033 | -$102,290,964 | $7.01 | 384 |
| 2023 Q1 | 525,695,763 | $3,343,549,352 | +$400,351,452 | $6.36 | 392 |
| 2022 Q4 | 463,083,127 | $2,111,673,406 | +$316,189,137 | $4.56 | 362 |
| 2022 Q3 | 397,277,077 | $981,353,984 | +$39,402,605 | $2.47 | 285 |
| 2022 Q2 | 381,315,055 | $1,269,865,701 | -$766,289 | $3.33 | 286 |
| 2022 Q1 | 379,347,582 | $1,733,881,945 | +$254,683,979 | $4.57 | 303 |
| 2021 Q4 | 325,364,612 | $898,136,470 | -$3,376,313 | $2.76 | 275 |
| 2021 Q3 | 322,720,420 | $1,222,983,895 | -$78,703,928 | $3.79 | 260 |
| 2021 Q2 | 342,122,590 | $1,546,427,015 | +$60,965,835 | $4.52 | 276 |
| 2021 Q1 | 329,199,307 | $1,168,532,551 | +$119,839,668 | $3.55 | 250 |
| 2020 Q4 | 293,634,044 | $678,350,900 | +$31,015,574 | $2.31 | 223 |
| 2020 Q3 | 294,245,615 | $237,459,540 | -$64,814,605 | $0.81 | 219 |