Transocean Ltd.
US ˙ NYSE ˙ CH0048265513

SecurityRIG / Transocean Ltd.
InstitutionPrudential Financial Inc
Latest Disclosed Ownership293,680 shares
Latest Disclosed Value $ 1,947,098
Prudential Financial Inc reports 43.92% increase in ownership of RIG / Transocean Ltd.

On May 13, 2026 - Prudential Financial Inc filed a 13F-HR form disclosing ownership of 293,680 shares of Transocean Ltd. (US:RIG) valued at $1,947,098 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 204,060 shares of Transocean Ltd.. This represents a change in shares of 43.92% during the quarter. The current value of the position is $1,814,942 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)
2026-05-13 2026-03-31 13F TRANSOCEAN REGISTERED SHS H8817H100 293,680 89,620 43.92 1,947 131.24 0.0013
2026-02-13 2025-12-31 13F TRANSOCEAN REGISTERED SHS H8817H100 204,060 41,105 25.22 843 65.75 0.0010
2025-11-13 2025-09-30 13F TRANSOCEAN REGISTERED SHS H8817H100 162,955 9,385 6.11 508 27.96 0.0006
2025-08-12 2025-06-30 13F TRANSOCEAN REGISTERED SHS H8817H100 153,570 -255,295 -62.44 398 -69.37 0.0005
2025-05-13 2025-03-31 13F TRANSOCEAN REGISTERED SHS H8817H100 408,865 -86,810 -17.51 1,296 -30.25 0.0018
2025-02-11 2024-12-31 13F TRANSOCEAN REGISTERED SHS H8817H100 495,675 446,100 899.85 1,859 784.76 0.0025
2024-11-14 2024-09-30 13F TRANSOCEAN REGISTERED SHS H8817H100 49,575 -285 -0.57 211 -21.05 0.0003
2024-08-13 2024-06-30 13F TRANSOCEAN REGISTERED SHS H8817H100 49,860 49,860 267 0.0004
2021-08-16 2021-06-30 13F TRANSOCEAN REG SHS H8817H100 0 -39,115 -100.00 0 -100.00
2021-05-12 2021-03-31 13F TRANSOCEAN REG SHS H8817H100 39,115 -8,393 -17.67 139 27.52 0.0002
2021-08-16 2020-12-31 13F/A-1 TRANSOCEAN REG SHS 0002 H8817H100 47,508 -750 -1.55 109 179.49 0.0002
2021-02-16 2020-12-31 13F TRANSOCEAN REG SHS H8817H100 47,508 -750 109 0.0002
2020-11-16 2020-09-30 13F TRANSOCEAN REG SHS H8817H100 48,258 -47,537 -49.62 39 -77.71 0.0001
2020-08-12 2020-06-30 13F TRANSOCEAN REG SHS H8817H100 95,795 -292,595 -75.34 175 -61.20 0.0003
2020-05-12 2020-03-31 13F TRANSOCEAN REG SHS H8817H100 388,390 22,680 6.20 451 -82.07 0.0010
2020-02-11 2019-12-31 13F TRANSOCEAN REG SHS H8817H100 365,710 29,240 8.69 2,516 67.29 0.0037
2019-11-13 2019-09-30 13F TRANSOCEAN REG SHS H8817H100 336,470 31,220 10.23 1,504 -23.15 0.0024
2019-08-08 2019-06-30 13F TRANSOCEAN REG SHS H8817H100 305,250 -154,740 -33.64 1,957 -51.16 0.0030
2019-05-15 2019-03-31 13F TRANSOCEAN REG SHS H8817H100 459,990 175,960 61.95 4,007 103.30 0.0067
2019-02-07 2018-12-31 13F TRANSOCEAN REG SHS H8817H100 284,030 -101,960 -26.42 1,971 -63.40 0.0035
2018-11-07 2018-09-30 13F TRANSOCEAN REG SHS H8817H100 385,990 124,110 47.39 5,385 52.98 0.0079
2018-08-13 2018-06-30 13F TRANSOCEAN REG SHS H8817H100 261,880 760 0.29 3,520 36.17 0.0053
2018-05-04 2018-03-31 13F TRANSOCEAN REG SHS H8817H100 261,120 -1,829,359 -87.51 2,585 -88.42 0.0039
2018-02-13 2017-12-31 13F TRANSOCEAN REG SHS H8817H100 2,090,479 -498,345 -19.25 22,326 -19.85 0.0304
2017-11-02 2017-09-30 13F TRANSOCEAN REG SHS H8817H100 2,588,824 298,151 13.02 27,856 47.75 0.0461
2017-08-07 2017-06-30 13F TRANSOCEAN REG SHS H8817H100 2,290,673 794,927 53.15 18,853 1.24 0.0280
2017-05-10 2017-03-31 13F TRANSOCEAN REG SHS H8817H100 1,495,746 45,783 3.16 18,622 -12.87 0.0290
2017-02-07 2016-12-31 13F TRANSOCEAN REG SHS H8817H100 1,449,963 244,734 20.31 21,373 66.35 0.0344
2016-11-04 2016-09-30 13F TRANSOCEAN REG SHS H8817H100 1,205,229 752,509 166.22 12,848 138.68 0.0212
2016-08-09 2016-06-30 13F TRANSOCEAN REG SHS H8817H100 452,720 59,000 14.99 5,383 49.61 0.0091
2016-05-09 2016-03-31 13F TRANSOCEAN REG SHS H8817H100 393,720 -11,500 -2.84 3,598 -28.28 0.0064
2016-02-12 2015-12-31 13F TRANSOCEAN REG SHS H8817H100 405,220 -196,300 -32.63 5,017 -35.45 0.0091
2015-11-10 2015-09-30 13F TRANSOCEAN REG SHS H8817H100 601,520 -30,700 -4.86 7,772 -23.74 0.0153
2015-08-06 2015-06-30 13F TRANSOCEAN REG SHS H8817H100 632,220 500 0.08 10,192 9.98 0.0181
2015-05-01 2015-03-31 13F TRANSOCEAN REG SHS H8817H100 631,720 -6,700 -1.05 9,267 -20.81 0.0161
2015-02-06 2014-12-31 13F TRANSOCEAN REG SHS H8817H100 638,420 -5,900 -0.92 11,702 -43.19 0.0212
2014-11-12 2014-09-30 13F TRANSOCEAN REG SHS H8817H100 644,320 13,300 2.11 20,599 -27.51 0.0388
2014-08-13 2014-06-30 13F TRANSOCEAN REG SHS H8817H100 631,020 110,450 21.22 28,415 32.03 0.0501
2014-05-14 2014-03-31 13F TRANSOCEAN REG SHS H8817H100 520,570 129,700 33.18 21,521 11.41 0.0401
2014-02-11 2013-12-31 13F TRANSOCEAN REG SHS H8817H100 390,870 390,870 19,317 0.0383
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.