Transocean Ltd.
US ˙ NYSE ˙ CH0048265513

SecurityRIG / Transocean Ltd.
InstitutionHsbc Holdings Plc
Latest Disclosed Ownership2,916,902 shares
Latest Disclosed Value $ 19,237,802
Hsbc Holdings Plc ownership in RIG / Transocean Ltd.

On April 30, 2026 - Hsbc Holdings Plc filed a 13F-HR form disclosing ownership of 2,916,902 shares of Transocean Ltd. (US:RIG) valued at $19,339,060 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on March 20, 2026 disclosing 3,117,030 shares of Transocean Ltd.. This represents a change in shares of -6.42% during the quarter. The current value of the position is $17,355,567 USD.

Hsbc Holdings Plc has a history of taking positions in derivatives of the underlying security (RIG) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD and put options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

RIG / Transocean Ltd. Historical Put/Call Ratio
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)
2026-04-30 2026-03-31 13F TRANSOCEAN REGISTERED SHS H8817H100 2,916,902 -200,128 -6.42 19,238 48.89 0.0100
2026-03-20 2025-12-31 13F/A-1 TRANSOCEAN REGISTERED SHS H8817H100 3,117,030 2,674,466 604.31 12,920 847.91 0.0066
2026-03-06 2025-12-31 13F TRANSOCEAN REGISTERED SHS H8817H100 3,117,030 2,674,466 12,920 0.0073
2025-11-13 2025-09-30 13F TRANSOCEAN REGISTERED SHS H8817H100 442,564 -115,079 -20.64 1,363 -6.71 0.0008
2025-08-13 2025-06-30 13F TRANSOCEAN REGISTERED SHS H8817H100 557,643 472,953 558.45 1,461 445.15 0.0009
2025-05-14 2025-03-31 13F TRANSOCEAN REGISTERED SHS H8817H100 84,690 -227 -0.27 268 -16.25 0.0002
2025-02-14 2024-12-31 13F TRANSOCEAN REGISTERED SHS H8817H100 84,917 -150,226 -63.89 321 -68.44 0.0002
2024-11-14 2024-09-30 13F TRANSOCEAN REGISTERED SHS H8817H100 235,143 235,143 1,015 0.0006
2024-05-15 2024-03-31 13F TRANSOCEAN REG SHS H8817H100 0 -80 -100.00 0 0.0000
2024-02-12 2023-12-31 13F TRANSOCEAN REG SHS H8817H100 80 -145 -64.44 1 -100.00 0.0000
2023-11-13 2023-09-30 13F TRANSOCEAN REG SHS H8817H100 225 0 0.00 2 0.00 0.0000
2023-08-11 2023-06-30 13F TRANSOCEAN REG SHS H8817H100 225 0 0.00 2 0.00 0.0000
2023-05-15 2023-03-31 13F TRANSOCEAN REG SHS H8817H100 225 -15,449 -98.56 1 -98.59 0.0000
2023-02-14 2022-12-31 13F TRANSOCEAN REG SHS H8817H100 15,674 15,674 71 0.0001
2022-11-14 2022-09-30 13F TRANSOCEAN REG SHS H8817H100 0 -40,284 -100.00 0 -100.00
2022-08-11 2022-06-30 13F TRANSOCEAN REG SHS H8817H100 40,284 -31,585 -43.95 135 -59.94 0.0002
2022-05-16 2022-03-31 13F TRANSOCEAN REG SHS H8817H100 71,869 -9,765 -11.96 337 47.81 0.0004
2022-02-11 2021-12-31 13F TRANSOCEAN REG SHS H8817H100 81,634 29,529 56.67 228 17.53 0.0002
2021-11-12 2021-09-30 13F TRANSOCEAN REG SHS H8817H100 52,105 -8,304 -13.75 194 -29.96 0.0002
2021-08-13 2021-06-30 13F TRANSOCEAN REG SHS H8817H100 60,409 60,409 277 0.0003
2021-05-14 2021-03-31 13F TRANSOCEAN REG SHS H8817H100 0 -55,145 -100.00 0 -100.00
2021-02-25 2020-12-31 13F/A-1 TRANSOCEAN REG SHS H8817H100 55,145 1,690 3.16 128 197.67 0.0002
2021-02-12 2020-12-31 13F TRANSOCEAN REG SHS H8817H100 55,145 1,690 128 30.3919
2020-11-12 2020-09-30 13F TRANSOCEAN REG SHS H8817H100 53,455 -18,613 -25.83 43 -67.42 0.0001
2020-08-14 2020-06-30 13F TRANSOCEAN REG SHS H8817H100 72,068 -149,400 -67.46 132 -48.64 0.0003
2020-05-15 2020-03-31 13F TRANSOCEAN REG SHS H8817H100 221,468 54,811 32.89 257 -77.73 0.0006
2020-02-14 2019-12-31 13F TRANSOCEAN REG SHS H8817H100 166,657 -423,546 -71.76 1,154 -56.25 0.0020
2019-11-14 2019-09-30 13F TRANSOCEAN REG SHS H8817H100 590,203 403,054 215.37 2,638 120.02 0.0049
2019-08-13 2019-06-30 13F TRANSOCEAN REG SHS H8817H100 187,149 -168,029 -47.31 1,199 -61.25 0.0023
2019-05-15 2019-03-31 13F TRANSOCEAN REG SHS H8817H100 355,178 18,972 5.64 3,094 32.56 0.0056
2019-02-13 2018-12-31 13F TRANSOCEAN REG SHS H8817H100 336,206 244,054 264.84 2,334 81.63 0.0043
2018-11-13 2018-09-30 13F TRANSOCEAN REG SHS H8817H100 92,152 -108,264 -54.02 1,285 -52.30 0.0021
2018-08-10 2018-06-30 13F TRANSOCEAN REG SHS H8817H100 200,416 132,326 194.34 2,694 299.70 0.0048
2018-05-11 2018-03-31 13F TRANSOCEAN REG SHS H8817H100 68,090 -127,306 -65.15 674 -67.70 0.0010
2018-02-14 2017-12-31 13F TRANSOCEAN REG SHS H8817H100 195,396 49,736 34.15 2,087 33.18 0.0030
2017-11-14 2017-09-30 13F TRANSOCEAN REG SHS H8817H100 145,660 -219,680 -60.13 1,567 -47.87 0.0025
2017-08-14 2017-06-30 13F TRANSOCEAN REG SHS H8817H100 365,340 156,762 75.16 3,006 15.75 0.0055
2017-05-15 2017-03-31 13F TRANSOCEAN REG SHS H8817H100 208,578 -252,256 -54.74 2,597 -61.76 0.0054
2017-02-09 2016-12-31 13F TRANSOCEAN REG SHS H8817H100 460,834 -156,789 -25.39 6,792 3.14 0.0158
2016-11-14 2016-09-30 13F TRANSOCEAN REG SHS H8817H100 617,623 -107,332 -14.81 6,585 -23.61 0.0164
2016-08-12 2016-06-30 13F TRANSOCEAN REG SHS H8817H100 724,955 89,464 14.08 8,620 48.42 0.0237
2016-05-13 2016-03-31 13F TRANSOCEAN REG SHS H8817H100 635,491 208,304 48.76 5,808 9.81 0.0164
2016-02-12 2015-12-31 13F TRANSOCEAN REG SHS H8817H100 427,187 -1,114,768 -72.30 5,289 -73.45 0.0127
2015-11-12 2015-09-30 13F TRANSOCEAN REG SHS H8817H100 1,541,955 524,678 51.58 19,922 21.48 0.0502
2015-08-13 2015-06-30 13F TRANSOCEAN REG SHS H8817H100 1,017,277 397,713 64.19 16,400 80.44 0.0335
2015-05-14 2015-03-31 13F TRANSOCEAN REG SHS H8817H100 619,564 144,894 30.53 9,089 4.46 0.0175
2015-02-13 2014-12-31 13F TRANSOCEAN REG SHS H8817H100 474,670 142,359 42.84 8,701 -18.11 0.0181
2014-11-18 2014-09-30 13F TRANSOCEAN REG SHS H8817H100 332,311 231,207 228.68 10,625 133.41 0.0222
2014-08-14 2014-06-30 13F TRANSOCEAN REG SHS H8817H100 101,104 -129,955 -56.24 4,552 -52.35 0.0098
2014-05-14 2014-03-31 13F TRANSOCEAN REG SHS H8817H100 231,059 21,011 10.00 9,552 -7.99 0.0228
2014-02-14 2013-12-31 13F TRANSOCEAN REG SHS H8817H100 210,048 36,053 20.72 10,381 34.07 0.0270
2013-11-14 2013-09-30 13F TRANSOCEAN REG SHS H8817H100 173,995 73,554 73.23 7,743 60.74 0.0212
2013-10-10 2013-06-30 13F/A-1 TRANSOCEAN REG SHS H8817H100 100,441 58,550 139.77 4,817 121.37 0.0146
2013-08-14 2013-06-30 13F TRANSOCEAN REG SHS H8817H100 100,441 4,817
2013-10-10 2013-03-31 13F/A-1 TRANSOCEAN REG SHS H8817H100 41,891 -17,198 -29.11 2,176 -17.51 0.0079
2013-05-22 2013-03-31 13F TRANSOCEAN REG SHS H8817H100 41,891 2,176
2013-06-17 2012-12-31 13F/A-1 TRANSOCEAN REG SHS H8817H100 60,885 -115,611 2,717 0.0105
2013-10-10 2012-12-31 13F/A-2 TRANSOCEAN REG SHS H8817H100 59,089 -117,407 -66.52 2,638 -66.75 0.0102
2013-06-21 2012-09-30 13F/A-1 TRANSOCEAN REG SHS H8817H100 176,479 82,324 7,933 0.0311
2013-10-11 2012-09-30 13F/A-2 TRANSOCEAN REG SHS H8817H100 176,496 82,341 87.45 7,934 88.32 0.0313
2013-10-11 2012-06-30 13F/A-1 TRANSOCEAN REG SHS H8817H100 94,155 39,999 73.86 4,213 41.85 0.0191
2013-10-11 2012-03-31 13F/A-1 TRANSOCEAN REG SHS H8817H100 54,156 54,156 2,970 0.0130
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2024-05-15 2024-03-31 13F TRANSOCEAN REG SHS Call 0 -100.00 0 -100.00 n/a n/a n/a
2024-02-12 2023-12-31 13F TRANSOCEAN REG SHS Call 315,000 0.00 2,000 -24.59 n/a n/a n/a
2023-11-13 2023-09-30 13F TRANSOCEAN REG SHS Call 315,000 0.00 2,652 20.11 n/a n/a n/a
2023-08-11 2023-06-30 13F TRANSOCEAN REG SHS Call 315,000 0.00 2,208 8.71 n/a n/a n/a
2023-05-15 2023-03-31 13F TRANSOCEAN REG SHS Call 315,000 2,032 n/a n/a n/a
2020-11-12 2020-09-30 13F TRANSOCEAN REG SHS Call 0 -100.00 0 -100.00 n/a n/a n/a
2020-08-14 2020-06-30 13F TRANSOCEAN REG SHS Call 244,300 447 n/a n/a n/a
2018-08-10 2018-06-30 13F TRANSOCEAN REG SHS Call 0 -100.00 0 -100.00 n/a n/a n/a
2018-05-11 2018-03-31 13F TRANSOCEAN REG SHS Call 31,600 313 n/a n/a n/a
2018-02-14 2017-12-31 13F TRANSOCEAN REG SHS Call 0 -100.00 0 -100.00 n/a n/a n/a
2017-11-14 2017-09-30 13F TRANSOCEAN REG SHS Call 100,000 0.00 1,076 30.74 n/a n/a n/a
2017-08-14 2017-06-30 13F TRANSOCEAN REG SHS Call 100,000 0.00 823 -23.51 n/a n/a n/a
2016-08-12 2016-06-30 13F TRANSOCEAN REG SHS Call 0 -100.00 0 -100.00 n/a n/a n/a
2016-05-13 2016-03-31 13F TRANSOCEAN REG SHS Call 585,000 13.26 5,347 -16.37 n/a n/a n/a
2016-02-12 2015-12-31 13F TRANSOCEAN REG SHS Call 516,500 10,230.00 6,394 9,736.92 n/a n/a n/a
2015-11-12 2015-09-30 13F TRANSOCEAN REG SHS Call 5,000 -99.03 65 -98.98 n/a n/a n/a
2015-08-13 2015-06-30 13F TRANSOCEAN REG SHS Call 0 -100.00 0 -100.00 n/a n/a n/a
2015-05-14 2015-03-31 13F TRANSOCEAN REG SHS Call 295,000 0.00 4,328 -19.96 n/a n/a n/a
2015-02-13 2014-12-31 13F TRANSOCEAN REG SHS Call 295,000 -1.37 5,407 -43.45 n/a n/a n/a
2014-11-18 2014-09-30 13F TRANSOCEAN REG SHS Call 299,100 0.03 9,562 -28.98 n/a n/a n/a
2014-08-14 2014-06-30 13F TRANSOCEAN REG SHS Call 299,000 7,375.00 13,463 8,059.39 n/a n/a n/a
2014-05-14 2014-03-31 13F TRANSOCEAN REG SHS Call 4,000 165 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2018-11-13 2018-09-30 13F TRANSOCEAN REG SHS Put 0 -100.00 0 -100.00 n/a n/a n/a
2018-08-10 2018-06-30 13F TRANSOCEAN REG SHS Put 164,000 2,204 n/a n/a n/a
2018-05-11 2018-03-31 13F TRANSOCEAN REG SHS Put 0 -100.00 0 -100.00 n/a n/a n/a
2018-02-14 2017-12-31 13F TRANSOCEAN REG SHS Put 1,500 0.00 16 0.00 n/a n/a n/a
2017-11-14 2017-09-30 13F TRANSOCEAN REG SHS Put 1,500 0.00 16 0.00 n/a n/a n/a
2017-05-15 2017-03-31 13F TRANSOCEAN REG SHS Put 0 -100.00 0 -100.00 n/a n/a n/a
2017-02-09 2016-12-31 13F TRANSOCEAN REG SHS Put 75,000 0.00 1,106 38.25 n/a n/a n/a
2016-11-14 2016-09-30 13F TRANSOCEAN REG SHS Put 75,000 0.00 800 -27.67 n/a n/a n/a
2016-08-12 2016-06-30 13F TRANSOCEAN REG SHS Put 0 -100.00 0 -100.00 n/a n/a n/a
2016-05-13 2016-03-31 13F TRANSOCEAN REG SHS Put 34,900 598.00 319 414.52 n/a n/a n/a
2016-02-12 2015-12-31 13F TRANSOCEAN REG SHS Put 5,000 -85.67 62 -80.56 n/a n/a n/a
2015-08-13 2015-06-30 13F TRANSOCEAN REG SHS Put 0 -100.00 0 -100.00 n/a n/a n/a
2015-05-14 2015-03-31 13F TRANSOCEAN REG SHS Put 5,000 0.00 73 -20.65 n/a n/a n/a
2015-02-13 2014-12-31 13F TRANSOCEAN REG SHS Put 5,000 -60.00 92 -77.00 n/a n/a n/a
2014-11-18 2014-09-30 13F TRANSOCEAN REG SHS Put 12,500 0.00 400 -28.57 n/a n/a n/a
2014-08-14 2014-06-30 13F TRANSOCEAN REG SHS Put 12,500 -45.41 560 -40.68 n/a n/a n/a
2014-05-14 2014-03-31 13F TRANSOCEAN REG SHS Put 22,900 83.20 944 68.57 n/a n/a n/a
2013-10-11 2012-06-30 13F/A TRANSOCEAN REG SHS Put 0 -100.00 0 -100.00 n/a n/a n/a
2013-10-11 2012-03-31 13F/A TRANSOCEAN REG SHS Put 450,000 24,677 n/a n/a n/a
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.