Transocean Ltd.
US ˙ NYSE ˙ CH0048265513

SecurityRIG / Transocean Ltd.
InstitutionFmr Llc
Latest Disclosed Ownership3,933,339 shares
Latest Disclosed Value $ 26,078,036
Fmr Llc reports 326.61% increase in ownership of RIG / Transocean Ltd.

On May 15, 2026 - Fmr Llc filed a 13F-HR form disclosing ownership of 3,933,339 shares of Transocean Ltd. (US:RIG) valued at $26,078,038 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 922,005 shares of Transocean Ltd.. This represents a change in shares of 326.61% during the quarter. The current value of the position is $24,308,035 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

Upgrade to unlock premium data and export to Excel .

Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F TRANSOCEAN REGISTERED SHS H8817H100 3,933,339 3,011,334 326.61 26,078 585.00 0.0014
2026-02-17 2025-12-31 13F TRANSOCEAN REGISTERED SHS H8817H100 922,005 146,629 18.91 3,808 57.38 0.0002
2025-11-13 2025-09-30 13F TRANSOCEAN REGISTERED SHS H8817H100 775,376 538,299 227.06 2,419 293.97 0.0001
2025-08-14 2025-06-30 13F TRANSOCEAN REGISTERED SHS H8817H100 237,077 -682,234 -74.21 614 -78.93 0.0000
2025-05-12 2025-03-31 13F TRANSOCEAN REGISTERED SHS H8817H100 919,311 408,402 79.94 2,914 52.17 0.0002
2025-02-13 2024-12-31 13F TRANSOCEAN REGISTERED SHS H8817H100 510,909 331,597 184.93 1,916 151.31 0.0001
2024-11-13 2024-09-30 13F TRANSOCEAN REGISTERED SHS H8817H100 179,312 -45,918 -20.39 762 -36.71 0.0000
2024-08-13 2024-06-30 13F TRANSOCEAN REGISTERED SHS H8817H100 225,230 196,588 686.36 1,205 572.63 0.0001
2024-05-13 2024-03-31 13F TRANSOCEAN REGISTERED SHS H8817H100 28,642 5,217 22.27 180 20.95 0.0000
2024-02-13 2023-12-31 13F TRANSOCEAN REG SHS H8817H100 23,425 11,866 102.66 149 57.45 0.0000
2023-11-13 2023-09-30 13F TRANSOCEAN REG SHS H8817H100 11,559 -1,074 -8.50 95 6.82 0.0000
2023-08-11 2023-06-30 13F TRANSOCEAN REG SHS H8817H100 12,633 -12,143 -49.01 89 -43.95 0.0000
2023-08-11 2023-03-31 13F/A-1 TRANSOCEAN REG SHS H8817H100 24,776 11,399 85.21 158 161.67 0.0000
2023-05-11 2023-03-31 13F TRANSOCEAN REG SHS H8817H100 24,776 11,399 158 0.0000
2023-02-13 2022-12-31 13F TRANSOCEAN REG SHS H8817H100 13,377 -6,191 -31.64 61 22.45 0.0000
2022-11-10 2022-09-30 13F TRANSOCEAN REG SHS H8817H100 19,568 11,669 147.73 49 88.46 0.0000
2022-08-12 2022-06-30 13F TRANSOCEAN REG SHS H8817H100 7,899 -2,689 -25.40 26 -45.83 0.0000
2022-05-13 2022-03-31 13F TRANSOCEAN REG SHS H8817H100 10,588 7,886 291.86 48 585.71 0.0000
2022-02-14 2021-12-31 13F TRANSOCEAN REG SHS H8817H100 2,702 -1,554,826 -99.83 7 -99.88 0.0000
2022-02-14 2021-09-30 13F/A-1 TRANSOCEAN REG SHS H8817H100 1,557,528 -388,188 -19.95 5,903 -32.88 0.0005
2021-11-15 2021-09-30 13F TRANSOCEAN REG SHS H8817H100 1,557,528 -388,188 5,903 0.0005
2021-08-13 2021-06-30 13F TRANSOCEAN REG SHS H8817H100 1,945,716 105,395 5.73 8,795 34.62 0.0007
2021-05-14 2021-03-31 13F TRANSOCEAN REG SHS H8817H100 1,840,321 282,686 18.15 6,533 81.57 0.0006
2021-02-08 2020-12-31 13F TRANSOCEAN REG SHS H8817H100 1,557,635 1,202,419 338.50 3,598 1,153.66 0.0003
2020-11-13 2020-09-30 13F TRANSOCEAN REG SHS H8817H100 355,216 -3,033 -0.85 287 -56.25 0.0000
2020-08-24 2020-06-30 13F/A-1 TRANSOCEAN REG SHS H8817H100 358,249 35,517 11.01 656 75.40 0.0001
2020-08-13 2020-06-30 13F TRANSOCEAN REG SHS H8817H100 358,249 35,517 656 16.1160
2020-05-14 2020-03-31 13F TRANSOCEAN REG SHS H8817H100 322,732 -9,369,744 -96.67 374 -99.44 0.0001
2020-02-07 2019-12-31 13F TRANSOCEAN REG SHS H8817H100 9,692,476 160,363 1.68 66,685 56.51 0.0074
2019-11-13 2019-09-30 13F TRANSOCEAN REG SHS H8817H100 9,532,113 -21,045 -0.22 42,608 -30.42 0.0051
2019-08-13 2019-06-30 13F TRANSOCEAN REG SHS H8817H100 9,553,158 7,229 0.08 61,235 -26.35 0.0072
2019-05-13 2019-03-31 13F TRANSOCEAN REG SHS H8817H100 9,545,929 -1,767,181 -15.62 83,146 5.90 0.0100
2019-02-13 2018-12-31 13F TRANSOCEAN REG SHS H8817H100 11,313,110 3,488,128 44.58 78,513 -28.07 0.0108
2018-11-09 2018-09-30 13F TRANSOCEAN REG SHS H8817H100 7,824,982 2,721,171 53.32 109,158 59.13 0.0123
2018-08-10 2018-06-30 13F TRANSOCEAN REG SHS H8817H100 5,103,811 4,727,168 1,255.08 68,595 1,739.99 0.0081
2018-05-14 2018-03-31 13F TRANSOCEAN REG SHS H8817H100 376,643 351,946 1,425.06 3,728 1,312.12 0.0004
2018-02-12 2017-12-31 13F TRANSOCEAN REG SHS H8817H100 24,697 -2,445 -9.01 264 -9.59 0.0000
2017-11-13 2017-09-30 13F TRANSOCEAN REG SHS H8817H100 27,142 -214,954 -88.79 292 -85.34 0.0000
2017-08-29 2017-06-30 13F/A-1 TRANSOCEAN REG SHS H8817H100 242,096 24,420 11.22 1,992 -26.49 0.0002
2017-08-11 2017-06-30 13F TRANSOCEAN REG SHS H8817H100 242,096 24,420 1,992
2017-05-11 2017-03-31 13F TRANSOCEAN REG SHS H8817H100 217,676 49,283 29.27 2,710 9.19 0.0003
2017-02-10 2016-12-31 13F TRANSOCEAN REG SHS H8817H100 168,393 21,218 14.42 2,482 58.19 0.0003
2016-11-14 2016-09-30 13F TRANSOCEAN REG SHS H8817H100 147,175 -11,862 -7.46 1,569 -17.03 0.0002
2016-08-11 2016-06-30 13F TRANSOCEAN REG SHS H8817H100 159,037 8,972 5.98 1,891 37.93 0.0003
2016-05-16 2016-03-31 13F TRANSOCEAN REG SHS H8817H100 150,065 -50,183 -25.06 1,371 -44.70 0.0002
2016-02-12 2015-12-31 13F TRANSOCEAN REG SHS H8817H100 200,248 -715,565 -78.13 2,479 -79.05 0.0003
2015-11-10 2015-09-30 13F TRANSOCEAN REG SHS H8817H100 915,813 -45,252 -4.71 11,832 -23.63 0.0017
2015-08-25 2015-06-30 13F/A-1 TRANSOCEAN REG SHS H8817H100 961,065 36,753 3.98 15,493 14.26 0.0020
2015-08-13 2015-06-30 13F TRANSOCEAN REG SHS H8817H100 961,065 15,493
2015-05-14 2015-03-31 13F TRANSOCEAN REG SHS H8817H100 924,312 38,780 4.38 13,560 -16.46 0.0017
2015-02-17 2014-12-31 13F TRANSOCEAN REG SHS H8817H100 885,532 51,363 6.16 16,232 -39.13 0.0021
2014-11-14 2014-09-30 13F TRANSOCEAN REG SHS H8817H100 834,169 -48,776 -5.52 26,668 -32.92 0.0036
2014-08-14 2014-06-30 13F TRANSOCEAN REG SHS H8817H100 882,945 77,168 9.58 39,753 19.34 0.0053
2014-05-15 2014-03-31 13F TRANSOCEAN REG SHS H8817H100 805,777 -1,575,211 -66.16 33,311 -71.46 0.0046
2014-02-13 2013-12-31 13F TRANSOCEAN REG SHS H8817H100 2,380,988 -470,416 -16.50 116,710 -7.92 0.0165
2013-11-14 2013-09-30 13F TRANSOCEAN REG SHS H8817H100 2,851,404 -567,831 -16.61 126,754 -22.83 0.0194
2013-09-24 2013-06-30 13F/A-1 TRANSOCEAN REG SHS H8817H100 3,419,235 3,419,235 164,252 0.0269
2013-08-14 2013-06-30 13F TRANSOCEAN REG SHS H8817H100 3,419,235 164,252 0.0269
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.