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

13F Institutional Holders and Ownership History from Q1 2014 to Q4 2025

Type / Class
Equity / Shares, $0.10 par value
Symbol
RIG on NYSE
Shares outstanding
1,101,344,330
Price per share
$4.92
All holders as of 31 Dec 2025
Q4 2025
Total 13F shares
768,523,341
Total reported value
$3,174,106,586
% of total 13F portfolios
0.01%
Share change
+20,089,935
Value change
+$140,366,682
Number of holders
453
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of Transocean Ltd. - Shares, $0.10 par value (RIG) based on Schedule 13D/G filings

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 31 Dec 2025, 453 institutional investors reported holding 768,523,341 shares of Transocean Ltd. - Shares, $0.10 par value (RIG). This represents 70% of the company’s total 1,101,344,330 outstanding shares.

Top 25 Institutional Shareholders

The largest institutional shareholders of Transocean Ltd. - Shares, $0.10 par value (RIG) together control 54% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.

Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
VANGUARD GROUP INC 8.8% 97,006,263 +2.6% 0.01% $400,635,866
BlackRock, Inc. 8% 88,142,959 +3.4% 0.01% $364,030,423
DIMENSIONAL FUND ADVISORS LP 3.9% 43,470,312 +21% 0.04% $179,531,409
PILGRIM GLOBAL ADVISORS LLC 2.9% 31,759,346 0% 24% $131,166,099
AMERICAN CENTURY COMPANIES INC 2.5% 27,488,687 +3.9% 0.06% $113,528,284
Dalal Street, LLC 2.5% 27,040,133 +11% 28% $111,675,749
MORGAN STANLEY 2.3% 24,790,325 +9.4% 0.01% $102,384,045
STATE STREET CORP 2.2% 24,725,897 +13% 0% $102,117,955
TWO SIGMA INVESTMENTS, LP 2.2% 24,235,919 +30% 0.15% $100,094,345
GEODE CAPITAL MANAGEMENT, LLC 2.1% 22,797,180 +7.1% 0.01% $94,168,064
TWO SIGMA ADVISERS, LP 2% 22,213,154 +19% 0.18% $91,740,326
VAN ECK ASSOCIATES CORP 1.5% 16,824,069 +15% 0.06% $69,483,000
D. E. Shaw & Co., Inc. 1.5% 16,425,031 +483% 0.05% $67,835,378
GOLDMAN SACHS GROUP INC 1.5% 16,045,959 -27% 0.01% $66,269,812
Capital World Investors 1.4% 15,665,736 -16% 0.01% $64,699,490
BANK OF AMERICA CORP /DE/ 1.4% 15,504,361 +338% 0% $64,033,012
KEYBANK NATIONAL ASSOCIATION/OH 1.1% 12,251,077 +8.7% 0.18% $50,596,964
BARCLAYS PLC 0.98% 10,802,664 +231% 0.02% $44,615,003
GENDELL JEFFREY L 0.98% 10,789,833 +34% 0.78% $44,562,010
CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.91% 9,997,978 -3.3% 0.01% $41,291,649
RENAISSANCE TECHNOLOGIES LLC 0.82% 9,035,328 +417% 0.06% $37,315,905
SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.81% 8,867,750 -25% 0.05% $36,623,808
NORTHERN TRUST CORP 0.72% 7,897,577 +0.01% 0% $32,616,992
MILLENNIUM MANAGEMENT LLC 0.69% 7,596,497 -8.2% 0.02% $31,373,533
CITADEL ADVISORS LLC 0.64% 7,005,529 +54% 0.02% $28,932,835

Institutional Holders of Transocean Ltd. - Shares, $0.10 par value (RIG) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2025 Q4 768,523,341 $3,174,106,586 +$140,366,682 $4.13 453
2025 Q3 748,831,983 $2,336,378,040 +$469,974,952 $3.12 445
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
2020 Q2 352,989,993 $645,998,226 -$87,947,928 $1.83 258
2020 Q1 435,016,463 $504,398,932 -$135,837,904 $1.16 275
2019 Q4 433,867,027 $2,985,185,489 -$8,988,990 $6.88 347
2019 Q3 439,748,899 $1,965,212,212 -$73,906,203 $4.47 357
2019 Q2 445,466,511 $2,854,464,163 +$58,493,519 $6.41 362
2019 Q1 435,676,560 $3,795,651,520 -$187,695,698 $8.71 417
2018 Q4 464,518,562 $3,224,181,096 +$451,884,837 $6.94 398
2018 Q3 380,419,550 $5,306,071,109 +$662,584,642 $13.95 415
2018 Q2 331,585,200 $4,456,062,304 -$63,259,934 $13.44 412
2018 Q1 339,159,904 $3,358,007,294 +$454,555,865 $9.90 405
2017 Q4 292,126,022 $3,120,330,356 -$46,583,566 $10.68 402
2017 Q3 288,269,834 $3,101,333,477 +$237,320,538 $10.76 382
2017 Q2 267,762,674 $2,203,307,165 -$73,864,989 $8.23 397
2017 Q1 266,778,871 $3,320,025,370 +$465,383,875 $12.45 419
2016 Q4 248,782,899 $3,666,738,914 +$55,081,175 $14.74 403
2016 Q3 253,252,768 $2,696,095,406 -$184,123,994 $10.66 383
2016 Q2 265,796,444 $3,159,803,512 -$97,860,206 $11.89 372
2016 Q1 273,351,208 $2,496,301,320 +$115,498,059 $9.14 359
2015 Q4 260,578,049 $3,227,317,181 +$31,041,074 $12.38 359
2015 Q3 258,593,652 $3,339,672,341 +$351,348,791 $12.92 381
2015 Q2 230,663,735 $3,718,289,106 -$26,913,700 $16.12 391
2015 Q1 232,356,114 $3,406,754,345 -$295,116,392 $14.67 390
2014 Q4 249,485,388 $4,572,162,856 +$96,003,435 $18.33 427
2014 Q3 241,824,012 $7,724,392,123 +$519,861,623 $31.97 478
2014 Q2 223,350,961 $10,058,418,621 +$237,420,073 $45.03 498
2014 Q1 220,857,657 $9,109,191,060 +$318,917,861 $41.34 498