Transocean Ltd.
US ˙ NYSE ˙ CH0048265513

SecurityRIG / Transocean Ltd.
InstitutionAmeriprise Financial Inc
Latest Disclosed Ownership166,634 shares
Latest Disclosed Value $ 1,104,786
Ameriprise Financial Inc reports 9.29% decrease in ownership of RIG / Transocean Ltd.

On May 15, 2026 - Ameriprise Financial Inc filed a 13F-HR form disclosing ownership of 166,634 shares of Transocean Ltd. (US:RIG) valued at $1,104,783 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 183,708 shares of Transocean Ltd.. This represents a change in shares of -9.29% during the quarter. The current value of the position is $991,472 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.

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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 COM H8817H100 166,634 -17,074 -9.29 1,105 45.65 0.0000
2026-02-17 2025-12-31 13F TRANSOCEAN COM H8817H100 183,708 100,248 120.12 759 191.54 0.0002
2025-11-14 2025-09-30 13F TRANSOCEAN COM H8817H100 83,460 57,876 226.22 260 293.94 0.0001
2025-08-14 2025-06-30 13F TRANSOCEAN COM H8817H100 25,584 7,116 38.53 66 13.79 0.0000
2025-05-14 2025-03-31 13F TRANSOCEAN COM H8817H100 18,468 -7,077 -27.70 59 -38.95 0.0000
2025-02-14 2024-12-31 13F TRANSOCEAN COM H8817H100 25,545 103 0.40 96 -12.04 0.0000
2024-11-14 2024-09-30 13F TRANSOCEAN COM H8817H100 25,442 -15,528 -37.90 108 -50.68 0.0000
2024-08-14 2024-06-30 13F TRANSOCEAN COM H8817H100 40,970 -10,581 -20.53 219 -32.20 0.0001
2024-05-15 2024-03-31 13F TRANSOCEAN COM H8817H100 51,551 -1,638,060 -96.95 324 -96.99 0.0001
2024-02-14 2023-12-31 13F TRANSOCEAN COM H8817H100 1,689,611 -1,413,120 -45.54 10,729 -57.88 0.0032
2023-11-14 2023-09-30 13F TRANSOCEAN COM H8817H100 3,102,731 -691,267 -18.22 25,473 -4.22 0.0084
2023-08-14 2023-06-30 13F TRANSOCEAN COM H8817H100 3,793,998 330,809 9.55 26,596 20.75 0.0083
2023-05-22 2023-03-31 13F/A-1 TRANSOCEAN COM H8817H100 3,463,189 3,386,167 4,396.36 22,026 6,174.93 0.0072
2023-05-15 2023-03-31 13F TE CONNECTIVITY COM H8817H100 3,463,189 3,386,167 22,026 0.0013
2023-02-14 2022-12-31 13F TRANSOCEAN COM H8817H100 77,022 8,065 11.70 351 106.47 0.0001
2022-11-14 2022-09-30 13F TRANSOCEAN COM H8817H100 68,957 260 0.38 170 -26.09 0.0001
2022-08-15 2022-06-30 13F TRANSOCEAN COM H8817H100 68,697 15,790 29.84 230 -4.56 0.0001
2022-05-16 2022-03-31 13F TRANSOCEAN COM H8817H100 52,907 -14,358 -21.35 241 30.98 0.0001
2022-02-14 2021-12-31 13F TRANSOCEAN COM H8817H100 67,265 -28,421 -29.70 184 -49.17 0.0001
2021-11-15 2021-09-30 13F TRANSOCEAN COM H8817H100 95,686 -21,576 -18.40 362 -31.57 0.0001
2021-08-16 2021-06-30 13F TRANSOCEAN COM H8817H100 117,262 35,965 44.24 529 83.68 0.0002
2021-05-17 2021-03-31 13F TRANSOCEAN COM H8817H100 81,297 36,223 80.36 288 176.92 0.0001
2021-02-12 2020-12-31 13F TRANSOCEAN COM H8817H100 45,074 -1,132 -2.45 104 188.89 0.0000
2020-11-16 2020-09-30 13F TRANSOCEAN COM H8817H100 46,206 -1,100,760 -95.97 36 -98.28 0.0000
2020-08-14 2020-06-30 13F TRANSOCEAN COM H8817H100 1,146,966 -488,945 -29.89 2,099 10.65 0.0009
2020-05-15 2020-03-31 13F TRANSOCEAN COM H8817H100 1,635,911 136,790 9.12 1,897 -81.61 0.0010
2020-02-14 2019-12-31 13F TRANSOCEAN COM H8817H100 1,499,121 -144,512 -8.79 10,316 40.41 0.0043
2019-11-14 2019-09-30 13F TRANSOCEAN COM H8817H100 1,643,633 245,498 17.56 7,347 -17.92 0.0033
2019-08-14 2019-06-30 13F TRANSOCEAN COM H8817H100 1,398,135 -683,038 -32.82 8,951 -50.62 0.0040
2019-05-15 2019-03-31 13F TRANSOCEAN COM H8817H100 2,081,173 43,770 2.15 18,127 28.20 0.0083
2019-02-14 2018-12-31 13F TRANSOCEAN COM H8817H100 2,037,403 99,742 5.15 14,140 -47.69 0.0071
2018-11-14 2018-09-30 13F TRANSOCEAN COM H8817H100 1,937,661 -11,608 -0.60 27,030 3.17 0.0094
2018-08-14 2018-06-30 13F TRANSOCEAN COM H8817H100 1,949,269 159,187 8.89 26,199 47.92 0.0116
2018-05-14 2018-03-31 13F TRANSOCEAN COM H8817H100 1,790,082 150,623 9.19 17,712 1.15 0.0080
2018-02-12 2017-12-31 13F TRANSOCEAN COM H8817H100 1,639,459 424,743 34.97 17,511 33.97 0.0080
2017-11-07 2017-09-30 13F TRANSOCEAN COM H8817H100 1,214,716 1,015,284 509.09 13,071 696.04 0.0062
2017-08-10 2017-06-30 13F TRANSOCEAN COM H8817H100 199,432 -75,974 -27.59 1,642 -52.11 0.0008
2017-05-05 2017-03-31 13F TRANSOCEAN COM H8817H100 275,406 -45,419 -14.16 3,429 -27.49 0.0018
2017-02-03 2016-12-31 13F TRANSOCEAN COM H8817H100 320,825 -16,519 -4.90 4,729 31.51 0.0026
2016-11-08 2016-09-30 13F TRANSOCEAN COM H8817H100 337,344 -5,528,819 -94.25 3,596 -94.84 0.0020
2016-08-08 2016-06-30 13F TRANSOCEAN COM H8817H100 5,866,163 -2,193,852 -27.22 69,748 -5.33 0.0409
2016-05-12 2016-03-31 13F TRANSOCEAN COM H8817H100 8,060,015 -3,153,052 -28.12 73,671 -46.93 0.0440
2016-02-11 2015-12-31 13F TRANSOCEAN COM H8817H100 11,213,067 2,966,126 35.97 138,818 30.28 0.0815
2015-11-12 2015-09-30 13F TRANSOCEAN COM H8817H100 8,246,941 8,018,472 3,509.65 106,550 2,793.02 0.0660
2015-08-13 2015-06-30 13F TRANSOCEAN COM H8817H100 228,469 21,082 10.17 3,683 21.11 0.0021
2015-05-14 2015-03-31 13F TRANSOCEAN COM H8817H100 207,387 9,406 4.75 3,041 -16.62 0.0017
2015-02-13 2014-12-31 13F TRANSOCEAN COM H8817H100 197,981 -326,149 -62.23 3,647 -78.24 0.0021
2014-11-14 2014-09-30 13F TRANSOCEAN COM H8817H100 524,130 349,097 199.45 16,758 112.53 0.0101
2014-08-13 2014-06-30 13F TRANSOCEAN COM H8817H100 175,033 10,720 6.52 7,885 16.09 0.0047
2014-05-14 2014-03-31 13F TRANSOCEAN COM H8817H100 164,313 62,519 61.42 6,792 35.27 0.0041
2014-02-14 2013-12-31 13F TRANSOCEAN COM H8817H100 101,794 96,740 1,914.13 5,021 2,131.56 0.0030
2013-11-14 2013-09-30 13F TRANSOCEAN COM H8817H100 5,054 193 3.97 225 -3.43 0.0001
2013-11-14 2013-09-30 13F TRANSOCEAN COM 004826551 566,423 0 25,206 0.0165
2013-08-14 2013-06-30 13F TRANSOCEAN COM H8817H100 4,861 4,861 233 0.0002
2013-08-14 2013-06-30 13F TRANSOCEAN COM 004826551 566,423 561,562 27,160 0.0188
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.