Transocean Ltd.
US ˙ NYSE ˙ CH0048265513

SecurityRIG / Transocean Ltd.
InstitutionProShare Advisors LLC
Latest Disclosed Ownership134,726 shares
Latest Disclosed Value $ 893,234
ProShare Advisors LLC reports 20.69% decrease in ownership of RIG / Transocean Ltd.

On April 24, 2026 - ProShare Advisors LLC filed a 13F-HR form disclosing ownership of 134,726 shares of Transocean Ltd. (US:RIG) valued at $893,233 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 169,883 shares of Transocean Ltd.. This represents a change in shares of -20.69% during the quarter. The current value of the position is $832,607 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)
2026-04-24 2026-03-31 13F TRANSOCEAN REGISTERED SHS H8817H100 134,726 -35,157 -20.69 893 27.39 0.0013
2026-02-06 2025-12-31 13F TRANSOCEAN REGISTERED SHS H8817H100 169,883 23,963 16.42 702 54.07 0.0012
2025-11-06 2025-09-30 13F TRANSOCEAN REGISTERED SHS H8817H100 145,920 -6,931 -4.53 455 15.19 0.0010
2025-08-07 2025-06-30 13F TRANSOCEAN REGISTERED SHS H8817H100 152,851 -5,043 -3.19 396 -21.00 0.0008
2025-05-08 2025-03-31 13F TRANSOCEAN REGISTERED SHS H8817H100 157,894 -47,510 -23.13 501 -35.06 0.0011
2025-02-14 2024-12-31 13F TRANSOCEAN REGISTERED SHS H8817H100 205,404 67,583 49.04 770 31.62 0.0018
2024-11-14 2024-09-30 13F TRANSOCEAN REGISTERED SHS H8817H100 137,821 137,821 586 0.0014
2021-08-13 2021-06-30 13F TRANSOCEAN REG SHS H8817H100 0 -156,787 -100.00 0 -100.00
2021-05-14 2021-03-31 13F TRANSOCEAN REG SHS H8817H100 156,787 26,472 20.31 557 85.05 0.0018
2021-02-09 2020-12-31 13F TRANSOCEAN REG SHS H8817H100 130,315 57,945 80.07 301 418.97 0.0011
2020-11-13 2020-09-30 13F TRANSOCEAN REG SHS H8817H100 72,370 -116,192 -61.62 58 -83.19 0.0003
2020-08-03 2020-06-30 13F TRANSOCEAN REG SHS H8817H100 188,562 126,547 204.06 345 379.17 0.0018
2020-05-15 2020-03-31 13F TRANSOCEAN REG SHS H8817H100 62,015 -16,657 -21.17 72 -86.69 0.0005
2020-02-12 2019-12-31 13F TRANSOCEAN REG SHS H8817H100 78,672 3,188 4.22 541 60.53 0.0025
2019-11-12 2019-09-30 13F TRANSOCEAN REG SHS H8817H100 75,484 6,256 9.04 337 -24.10 0.0019
2019-08-13 2019-06-30 13F TRANSOCEAN REG SHS H8817H100 69,228 -3,678 -5.04 444 -30.08 0.0027
2019-05-15 2019-03-31 13F TRANSOCEAN REG SHS H8817H100 72,906 6,575 9.91 635 38.04 0.0038
2019-02-14 2018-12-31 13F TRANSOCEAN REG SHS H8817H100 66,331 8,295 14.29 460 -43.21 0.0032
2018-11-14 2018-09-30 13F TRANSOCEAN REG SHS H8817H100 58,036 -5,509 -8.67 810 -5.15 0.0055
2018-08-13 2018-06-30 13F TRANSOCEAN REG SHS H8817H100 63,545 -3,680 -5.47 854 28.23 0.0057
2018-05-14 2018-03-31 13F TRANSOCEAN REG SHS H8817H100 67,225 3,506 5.50 666 -2.20 0.0043
2018-02-14 2017-12-31 13F TRANSOCEAN REG SHS H8817H100 63,719 5,271 9.02 681 8.27 0.0047
2017-11-13 2017-09-30 13F TRANSOCEAN REG SHS H8817H100 58,448 -7,340 -11.16 629 16.27 0.0058
2017-08-11 2017-06-30 13F TRANSOCEAN REG SHS H8817H100 65,788 -1,224 -1.83 541 -35.13 0.0054
2017-05-12 2017-03-31 13F/A-2 TRANSOCEAN REG SHS H8817H100 67,012 -27,924 -29.41 834 -40.39 0.0087
2017-05-08 2017-03-31 13F/A-1 TRANSOCEAN REG SHS H8817H100 67,012 0 834 0.0087
2017-04-25 2017-03-31 13F TRANSOCEAN REG SHS H8817H100 67,012 834
2017-02-13 2016-12-31 13F TRANSOCEAN REG SHS H8817H100 94,936 28,544 42.99 1,399 97.60 0.0155
2016-11-10 2016-09-30 13F TRANSOCEAN REG SHS H8817H100 66,392 -10,273 -13.40 708 -22.37 0.0099
2016-08-12 2016-06-30 13F TRANSOCEAN REG SHS H8817H100 76,665 5,910 8.35 912 40.96 0.0117
2016-05-06 2016-03-31 13F TRANSOCEAN REG SHS H8817H100 70,755 -5,778 -7.55 647 -31.68 0.0089
2016-02-05 2015-12-31 13F TRANSOCEAN REG SHS H8817H100 76,533 4,158 5.75 947 1.28 0.0115
2015-11-06 2015-09-30 13F TRANSOCEAN REG SHS H8817H100 72,375 5,274 7.86 935 -13.59 0.0131
2015-08-11 2015-06-30 13F TRANSOCEAN REG SHS H8817H100 67,101 -62,207 -48.11 1,082 -42.96 0.0150
2015-05-08 2015-03-31 13F TRANSOCEAN REG SHS H8817H100 129,308 129,308 0.00 1,897 0.0223
2015-01-30 2014-12-31 13F TRANSOCEAN REG SHS H8817H100 0 -102,766 -100.00 0 -100.00
2014-11-06 2014-09-30 13F TRANSOCEAN REG SHS H8817H100 102,766 28,716 38.78 3,285 -1.47 0.0435
2014-08-08 2014-06-30 13F TRANSOCEAN REG SHS H8817H100 74,050 -2,127 -2.79 3,334 5.87 0.0432
2014-05-07 2014-03-31 13F TRANSOCEAN REG SHS H8817H100 76,177 3,305 4.54 3,149 -12.55 0.0394
2014-02-04 2013-12-31 13F TRANSOCEAN REG SHS H8817H100 72,872 58,678 413.40 3,601 469.78 0.0537
2013-11-07 2013-09-30 13F TRANSOCEAN REG SHS H8817H100 14,194 -7,352 -34.12 632 -38.82 0.0150
2013-07-25 2013-06-30 13F TRANSOCEAN REG SHS H8817H100 21,546 21,546 1,033 0.0203
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.