Transocean Ltd.
US ˙ NYSE ˙ CH0048265513

SecurityRIG / Transocean Ltd.
InstitutionProspera Financial Services Inc
Latest Disclosed Ownership146,545 shares
Latest Disclosed Value $ 971,588
Prospera Financial Services Inc reports 1.67% decrease in ownership of RIG / Transocean Ltd.

On April 14, 2026 - Prospera Financial Services Inc filed a 13F-HR form disclosing ownership of 146,545 shares of Transocean Ltd. (US:RIG) valued at $971,593 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 9, 2026 disclosing 149,035 shares of Transocean Ltd.. This represents a change in shares of -1.67% during the quarter. The current value of the position is $915,906 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)
2026-04-14 2026-03-31 13F TRANSOCEAN REGISTERED SHS H8817H100 146,545 -2,490 -1.67 972 57.89 0.0156
2026-02-09 2025-12-31 13F TRANSOCEAN REGISTERED SHS H8817H100 149,035 -11,240 -7.01 616 23.00 0.0101
2025-11-06 2025-09-30 13F TRANSOCEAN REGISTERED SHS H8817H100 160,275 -1,065 -0.66 500 19.90 0.0085
2025-08-06 2025-06-30 13F TRANSOCEAN REGISTERED SHS H8817H100 161,340 -2,425 -1.48 418 -19.65 0.0078
2025-05-15 2025-03-31 13F TRANSOCEAN REGISTERED SHS H8817H100 163,765 3,710 2.32 519 -13.50 0.0119
2025-02-13 2024-12-31 13F TRANSOCEAN REGISTERED SHS H8817H100 160,055 -1,010 -0.63 600 -12.28 0.0140
2024-11-07 2024-09-30 13F TRANSOCEAN REGISTERED SHS H8817H100 161,065 -9,250 -5.43 685 -24.92 0.0175
2024-08-13 2024-06-30 13F TRANSOCEAN REGISTERED SHS H8817H100 170,315 11,455 7.21 911 -8.63 0.0253
2024-08-13 2024-03-31 13F TRANSOCEAN REGISTERED SHS H8817H100 158,860 41,750 35.65 998 34.19 0.0297
2024-02-14 2023-12-31 13F TRANSOCEAN REG SHS H8817H100 117,110 -68,983 -37.07 744 -51.34 0.0246
2023-11-13 2023-09-30 13F TRANSOCEAN REG SHS H8817H100 186,093 100,394 117.15 1,528 154.50 0.0591
2023-08-08 2023-06-30 13F TRANSOCEAN REG SHS H8817H100 85,699 32,950 62.47 601 79.10 0.0230
2023-05-12 2023-03-31 13F TRANSOCEAN REG SHS H8817H100 52,749 29,850 130.36 335 222.12 0.0138
2023-02-08 2022-12-31 13F TRANSOCEAN REG SHS H8817H100 22,899 22,899 104 0.0052
2022-08-08 2022-06-30 13F TRANSOCEAN REG SHS H8817H100 0 -20,274 -100.00 0 -100.00
2022-05-04 2022-03-31 13F TRANSOCEAN REG SHS H8817H100 20,274 3,000 17.37 93 93.75 0.0039
2022-02-10 2021-12-31 13F TRANSOCEAN REG SHS H8817H100 17,274 2,780 19.18 48 -12.73 0.0021
2021-11-12 2021-09-30 13F TRANSOCEAN REG SHS H8817H100 14,494 3,172 28.02 55 7.84 0.0027
2021-08-16 2021-06-30 13F/A-1 TRANSOCEAN REG SHS H8817H100 11,322 0 0.00 51 24.39 0.0026
2021-08-12 2021-06-30 13F TRANSOCEAN REG SHS H8817H100 11,322 0 51 0.0026
2021-05-06 2021-03-31 13F TRANSOCEAN REG SHS H8817H100 11,322 11,322 41 0.0024
2021-02-12 2020-12-31 13F TRANSOCEAN REG SHS H8817H100 0 -7,497 -100.00 0 -100.00
2020-11-04 2020-09-30 13F TRANSOCEAN REG SHS H8817H100 7,497 7,497 6 0.0023
2019-10-22 2019-09-30 13F TRANSOCEAN REG SHS H8817H100 0 -32,549 -100.00 0 -100.00
2019-08-14 2019-06-30 13F TRANSOCEAN REG SHS H8817H100 32,549 32,549 245 0.0494
2019-05-02 2019-03-31 13F TRANSOCEAN REG SHS H8817H100 0 -32,549 -100.00 0 -100.00
2019-02-13 2018-12-31 13F TRANSOCEAN REG SHS H8817H100 32,549 0 0.00 245 -44.94 0.0494
2018-10-25 2018-09-30 13F TRANSOCEAN REG SHS H8817H100 32,549 8,475 35.20 445 40.82 0.0830
2018-07-18 2018-06-30 13F TRANSOCEAN REG SHS H8817H100 24,074 1,372 6.04 316 42.99 0.0428
2018-04-12 2018-03-31 13F TRANSOCEAN REG SHS H8817H100 22,702 7,850 52.85 221 30.77 0.0309
2018-01-23 2017-12-31 13F TRANSOCEAN REG SHS H8817H100 14,852 -11,400 -43.43 169 -38.99 0.0258
2017-10-11 2017-09-30 13F TRANSOCEAN REG SHS H8817H100 26,252 5,300 25.30 277 62.94 0.0421
2017-07-19 2017-06-30 13F TRANSOCEAN REG SHS H8817H100 20,952 2,450 13.24 170 -26.09 0.0273
2017-04-13 2017-03-31 13F TRANSOCEAN REG SHS H8817H100 18,502 -800 -4.14 230 -20.96 0.0415
2017-01-11 2016-12-31 13F TRANSOCEAN REG SHS H8817H100 19,302 -30 -0.16 291 41.26 0.0570
2016-10-12 2016-09-30 13F TRANSOCEAN REG SHS H8817H100 19,332 3,845 24.83 206 11.96 0.0414
2016-07-26 2016-06-30 13F TRANSOCEAN REG SHS H8817H100 15,487 0 0.00 184 29.58 0.0380
2016-04-12 2016-03-31 13F TRANSOCEAN REG SHS H8817H100 15,487 1,040 7.20 142 -20.67 0.0316
2016-01-12 2015-12-31 13F TRANSOCEAN REG SHS H8817H100 14,447 700 5.09 179 0.56 0.0393
2015-10-16 2015-09-30 13F TRANSOCEAN REG SHS H8817H100 13,747 282 2.09 178 -17.97 0.0450
2015-08-07 2015-06-30 13F TRANSOCEAN REG SHS H8817H100 13,465 897 7.14 217 17.93 0.0516
2015-04-22 2015-03-31 13F TRANSOCEAN REG SHS H8817H100 12,568 12,568 0.00 184 0.0410
2015-01-14 2014-12-31 13F TRANSOCEAN REG SHS H8817H100 0 -9,771 -100.00 0 -100.00
2014-10-16 2014-09-30 13F TRANSOCEAN REG SHS H8817H100 9,771 2,098 27.34 312 -9.83 0.0841
2014-07-07 2014-06-30 13F TRANSOCEAN REG SHS H8817H100 7,673 2,583 50.75 346 64.76 0.0936
2014-04-04 2014-03-31 13F TRANSOCEAN REG SHS H8817H100 5,090 5,090 210 0.0663
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.