Transocean Ltd.
US ˙ NYSE ˙ CH0048265513

SecurityRIG / Transocean Ltd.
InstitutionAdvisory Services Network, LLC
Latest Disclosed Ownership332,171 shares
Latest Disclosed Value $ 2,202,292
Advisory Services Network, LLC reports 0.57% increase in ownership of RIG / Transocean Ltd.

On May 15, 2026 - Advisory Services Network, LLC filed a 13F-HR form disclosing ownership of 332,171 shares of Transocean Ltd. (US:RIG) valued at $2,202,294 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 330,281 shares of Transocean Ltd.. This represents a change in shares of 0.57% during the quarter. The current value of the position is $2,052,817 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 Stock H8817H100 332,171 1,890 0.57 2,202 61.44 0.0203
2026-02-17 2025-12-31 13F TRANSOCEAN Stock H8817H100 330,281 -32,981 -9.08 1,364 20.39 0.0193
2025-11-18 2025-09-30 13F TRANSOCEAN Stock H8817H100 363,262 61,625 20.43 1,133 28.75 0.0166
2025-08-19 2025-06-30 13F TRANSOCEAN Stock H8817H100 301,637 16,753 5.88 881 -2.55 0.0142
2025-05-15 2025-03-31 13F TRANSOCEAN Stock H8817H100 284,884 49,661 21.11 903 2.38 0.0174
2025-02-13 2024-12-31 13F TRANSOCEAN Stock H8817H100 235,223 30,629 14.97 882 -19.38 0.0164
2024-11-14 2024-09-30 13F TRANSOCEAN Stock H8817H100 204,594 0 0.00 1,095 0.00 0.0226
2024-08-13 2024-06-30 13F TRANSOCEAN Stock H8817H100 204,594 1,400 0.69 1,095 -14.26 0.0226
2024-05-06 2024-03-31 13F TRANSOCEAN Stock H8817H100 203,194 -46,237 -18.54 1,276 -19.39 0.0283
2024-02-09 2023-12-31 13F TRANSOCEAN Stock H8817H100 249,431 24,130 10.71 1,584 -14.39 0.0387
2023-11-14 2023-09-30 13F TRANSOCEAN Stock H8817H100 225,301 -29,398 -11.54 1,850 3.59 0.0497
2023-08-09 2023-06-30 13F TRANSOCEAN Stock H8817H100 254,699 46,671 22.43 1,785 34.92 0.0476
2023-05-17 2023-03-31 13F TRANSOCEAN Stock H8817H100 208,028 -5,491 -2.57 1,323 35.97 0.0367
2023-02-13 2022-12-31 13F TRANSOCEAN Stock H8817H100 213,519 -2,122 -0.98 974 82.55 0.0298
2022-11-14 2022-09-30 13F TRANSOCEAN Stock H8817H100 215,641 31,164 16.89 533 -13.19 0.0188
2022-08-02 2022-06-30 13F TRANSOCEAN Stock H8817H100 184,477 -1,250 -0.67 614 -27.68 0.0210
2022-05-23 2022-03-31 13F TRANSOCEAN Stock H8817H100 185,727 35,615 23.73 849 105.07 0.0250
2022-02-14 2021-12-31 13F TRANSOCEAN Stock H8817H100 150,112 -8,404 -5.30 414 -31.11 0.0119
2021-11-05 2021-09-30 13F TRANSOCEAN Stock H8817H100 158,516 -3,273 -2.02 601 -17.78 0.0191
2021-08-12 2021-06-30 13F TRANSOCEAN Stock H8817H100 161,789 -94,350 -36.84 731 -19.58 0.0231
2021-05-24 2021-03-31 13F TRANSOCEAN Stock H8817H100 256,139 42,615 19.96 909 84.38 0.0338
2021-02-09 2020-12-31 13F TRANSOCEAN Stock H8817H100 213,524 71,866 50.73 493 332.46 0.0198
2020-11-16 2020-09-30 13F TRANSOCEAN Stock H8817H100 141,658 8,336 6.25 114 -53.28 0.0054
2020-08-10 2020-06-30 13F TRANSOCEAN Stock H8817H100 133,322 21,210 18.92 244 87.69 0.0134
2020-05-15 2020-03-31 13F TRANSOCEAN Stock H8817H100 112,112 11,914 11.89 130 -81.13 0.0085
2020-02-04 2019-12-31 13F TRANSOCEAN Stock H8817H100 100,198 13,775 15.94 689 24.37 0.0362
2019-11-04 2019-09-30 13F TRANSOCEAN Stock H8817H100 86,423 0 0.00 554 0.00 0.0339
2019-08-01 2019-06-30 13F TRANSOCEAN Stock H8817H100 86,423 27,959 47.82 554 8.84 0.0340
2019-05-20 2019-03-31 13F TRANSOCEAN Stock H8817H100 58,464 31,358 115.69 509 170.74 0.0358
2019-02-15 2018-12-31 13F TRANSOCEAN Stock H8817H100 27,106 -4,823 -15.11 188 -57.75 0.0164
2018-11-02 2018-09-30 13F TRANSOCEAN Stock H8817H100 31,929 55 0.17 445 7.23 0.0325
2018-07-27 2018-06-30 13F TRANSOCEAN Stock H8817H100 31,874 2,005 6.71 415 40.20 0.0316
2018-04-23 2018-03-31 13F TRANSOCEAN Stock H8817H100 29,869 19,791 196.38 296 174.07 0.0236
2018-02-08 2017-12-31 13F TRANSOCEAN Stock H8817H100 10,078 -1,150 -10.24 108 -10.74 0.0094
2017-10-12 2017-09-30 13F TRANSOCEAN Stock H8817H100 11,228 -1,014 -8.28 121 19.80 0.0139
2017-08-17 2017-06-30 13F TRANSOCEAN LTD REG SHS Stock H8817H100 12,242 -928 -7.05 101 -38.41 0.0132
2017-04-28 2017-03-31 13F TRANSOCEAN LTD REG SHS Stock H8817H100 13,170 -2,633 -16.66 164 -2.38 0.0238
2016-10-07 2016-09-30 13F TRANSOCEAN Stock H8817H100 15,803 1,696 12.02 168 0.00 0.0316
2016-07-27 2016-06-30 13F TRANSOCEAN Stock H8817H100 14,107 1,750 14.16 168 48.67 0.0382
2016-04-21 2016-03-31 13F TRANSOCEAN Stock H8817H100 12,357 10,515 570.85 113 391.30 0.0309
2016-01-27 2015-12-31 13F TRANSOCEAN LTD REG SHS Stock H8817H100 1,842 -700 -27.54 23 -30.30 0.0074
2015-10-01 2015-09-30 13F TRANSOCEAN Stock H8817H100 2,542 -3,641 -58.89 33 -65.98 0.0100
2015-07-02 2015-06-30 13F TRANSOCEAN Stock H8817H100 6,183 -632 -9.27 97 -14.16 0.0286
2015-04-08 2015-03-31 13F TRANSOCEAN Stock H8817H100 6,815 2,715 66.22 113 79.37 0.0312
2015-01-23 2014-12-31 13F TRANSOCEAN Stock H8817H100 4,100 -5,750 -58.38 63 -80.00 0.0197
2014-10-07 2014-09-30 13F TRANSOCEAN LTD REG SHS Stock H8817H100 9,850 -2,813 -22.21 315 -44.74 0.1152
2014-07-10 2014-06-30 13F TRANSOCEAN Stock H8817H100 12,663 6,733 113.54 570 132.65 0.2413
2014-04-09 2014-03-31 13F TRANSOCEAN LTD REG SHS Stock H8817H100 5,930 5,074 592.76 245 483.33 0.1263
2014-02-13 2013-12-31 13F TRANSOCEAN Stock H8817H100 856 856 42 0.0211
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.