Transocean Ltd.
US ˙ NYSE ˙ CH0048265513

SecurityRIG / Transocean Ltd.
InstitutionVerition Fund Management LLC
Latest Disclosed Ownership187,780 shares
Latest Disclosed Value $ 1,244,981
Verition Fund Management LLC ownership in RIG / Transocean Ltd.

On May 15, 2026 - Verition Fund Management LLC filed a 13F-HR form disclosing ownership of 187,780 shares of Transocean Ltd. (US:RIG) valued at $1,244,981 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 1,142,433 shares of Transocean Ltd.. This represents a change in shares of -83.56% during the quarter. The current value of the position is $1,117,291 USD.

Verition Fund Management LLC 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 252,700 of underlying shares valued at $1,675,401 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.

Upgrade to unlock premium data and export to Excel .

Institutional Put/Call Ratios
(Premium Subscription Required)

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)
2026-05-15 2026-03-31 13F TRANSOCEAN REGISTERED SHS H8817H100 187,780 -954,653 -83.56 1,245 -73.63 0.0081
2026-02-13 2025-12-31 13F TRANSOCEAN REGISTERED SHS H8817H100 1,142,433 -452,295 -28.36 4,718 -5.17 0.0185
2025-11-14 2025-09-30 13F TRANSOCEAN REGISTERED SHS H8817H100 1,594,728 132,964 9.10 4,976 31.44 0.0205
2025-08-14 2025-06-30 13F TRANSOCEAN REGISTERED SHS H8817H100 1,461,764 879,128 150.89 3,786 105.04 0.0169
2025-05-15 2025-03-31 13F TRANSOCEAN REGISTERED SHS H8817H100 582,636 509,651 698.30 1,847 576.19 0.0086
2025-02-14 2024-12-31 13F TRANSOCEAN REGISTERED SHS H8817H100 72,985 -460,027 -86.31 274 -87.95 0.0011
2024-11-14 2024-09-30 13F TRANSOCEAN REGISTERED SHS H8817H100 533,012 393,565 282.23 2,265 203.62 0.0114
2024-08-14 2024-06-30 13F TRANSOCEAN REGISTERED SHS H8817H100 139,447 35,469 34.11 746 14.42 0.0041
2024-05-14 2024-03-31 13F TRANSOCEAN REGISTERED SHS H8817H100 103,978 30,876 42.24 653 40.52 0.0045
2024-02-14 2023-12-31 13F TRANSOCEAN REG SHS H8817H100 73,102 73,102 464 0.0036
2023-11-14 2023-09-30 13F TRANSOCEAN REG SHS H8817H100 0 -69,800 -100.00 0 -100.00
2023-08-14 2023-06-30 13F TRANSOCEAN REG SHS H8817H100 69,800 58,300 506.96 489 569.86 0.0065
2023-05-15 2023-03-31 13F TRANSOCEAN REG SHS H8817H100 11,500 11,500 73 0.0010
2021-11-15 2021-09-30 13F TRANSOCEAN REG SHS H8817H100 0 -19,245 -100.00 0 -100.00
2021-08-16 2021-06-30 13F TRANSOCEAN REG SHS H8817H100 19,245 19,245 87 0.0008
2020-08-14 2020-06-30 13F TRANSOCEAN REG SHS H8817H100 0 -356,603 -100.00 0 -100.00
2020-05-15 2020-03-31 13F TRANSOCEAN REG SHS H8817H100 356,603 22,802 6.83 414 -81.98 0.0163
2020-02-14 2019-12-31 13F TRANSOCEAN REG SHS H8817H100 333,801 -40,830 -10.90 2,297 37.13 0.0418
2019-11-14 2019-09-30 13F TRANSOCEAN REG SHS H8817H100 374,631 -124,648 -24.97 1,675 -47.66 0.0462
2019-08-14 2019-06-30 13F TRANSOCEAN REG SHS H8817H100 499,279 -178,428 -26.33 3,200 -45.79 0.0900
2019-05-15 2019-03-31 13F TRANSOCEAN REG SHS H8817H100 677,707 109,954 19.37 5,903 49.82 0.2300
2019-02-14 2018-12-31 13F TRANSOCEAN REG SHS H8817H100 567,753 567,753 -16.22 3,940 -33.25 0.2826
2018-11-14 2018-09-30 13F TRANSOCEAN REG SHS H8817H100 0 -12,420 -100.00 0 -100.00
2018-08-15 2018-06-30 13F TRANSOCEAN REG SHS H8817H100 12,420 12,420 167 0.0102
2018-05-15 2018-03-31 13F TRANSOCEAN REG SHS H8817H100 0 -18,415 -100.00 0 -100.00
2018-02-14 2017-12-31 13F TRANSOCEAN REG SHS H8817H100 18,415 18,415 197 0.0182
2017-08-15 2017-06-30 13F TRANSOCEAN REG SHS H8817H100 0 -61,820 -100.00 0 -100.00
2017-05-12 2017-03-31 13F TRANSOCEAN REG SHS H8817H100 61,820 61,820 770 0.0718
2016-11-15 2016-09-30 13F TRANSOCEAN REG SHS H8817H100 0 -35,551 -100.00 0 -100.00
2016-08-15 2016-06-30 13F TRANSOCEAN REG SHS H8817H100 35,551 35,551 0.00 423 0.0540
2015-02-13 2014-12-31 13F TRANSOCEAN REG SHS H8817H100 0 -9,336 -100.00 0 -100.00
2014-11-14 2014-09-30 13F TRANSOCEAN REG SHS H8817H100 9,336 -3,966 -29.82 298 -50.25 0.0420
2014-08-14 2014-06-30 13F TRANSOCEAN REG SHS H8817H100 13,302 -5,191 -28.07 599 -21.70 0.0640
2014-05-14 2014-03-31 13F TRANSOCEAN REG SHS H8817H100 18,493 10,102 120.39 765 84.34 0.1164
2014-02-14 2013-12-31 13F TRANSOCEAN REG SHS H8817H100 8,391 -765 -8.36 415 1.97 0.0738
2013-11-14 2013-09-30 13F TRANSOCEAN REG SHS H8817H100 9,156 1,645 21.90 407 13.06 0.0615
2013-08-12 2013-06-30 13F TRANSOCEAN REG SHS H8817H100 7,511 7,511 360 0.0661
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
(%)
2025-05-15 2025-03-31 13F TRANSOCEAN REGISTERED SHS Call 0 -100.00 0 -100.00 n/a n/a n/a
2025-02-14 2024-12-31 13F TRANSOCEAN REGISTERED SHS Call 262,300 -2.02 984 -13.54 n/a n/a n/a
2024-11-14 2024-09-30 13F TRANSOCEAN REGISTERED SHS Call 267,700 0.00 1,138 -20.60 n/a n/a n/a
2024-08-14 2024-06-30 13F TRANSOCEAN REGISTERED SHS Call 267,700 362.35 1,432 294.49 n/a n/a n/a
2024-05-14 2024-03-31 13F TRANSOCEAN REGISTERED SHS Call 57,900 131.60 364 129.75 n/a n/a n/a
2024-02-14 2023-12-31 13F TRANSOCEAN REG SHS Call 25,000 159 n/a n/a n/a
2020-08-14 2020-06-30 13F TRANSOCEAN REG SHS Call 0 -100.00 0 -100.00 n/a n/a n/a
2020-05-15 2020-03-31 13F TRANSOCEAN REG SHS Call 106,300 -32.38 123 -88.63 n/a n/a n/a
2020-02-14 2019-12-31 13F TRANSOCEAN REG SHS Call 157,200 -24.39 1,082 16.47 n/a n/a n/a
2019-11-14 2019-09-30 13F TRANSOCEAN REG SHS Call 207,900 -65.78 929 -76.15 n/a n/a n/a
2019-08-14 2019-06-30 13F TRANSOCEAN REG SHS Call 607,600 731.19 3,895 511.46 n/a n/a n/a
2019-05-15 2019-03-31 13F TRANSOCEAN REG SHS Call 73,100 637 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
(%)
2026-05-15 2026-03-31 13F TRANSOCEAN REGISTERED SHS Put 252,700 -43.52 1,675 -9.31 n/a n/a n/a
2026-02-13 2025-12-31 13F TRANSOCEAN REGISTERED SHS Put 447,400 206.65 1,848 305.93 n/a n/a n/a
2025-11-14 2025-09-30 13F TRANSOCEAN REGISTERED SHS Put 145,900 455 n/a n/a n/a
2025-02-14 2024-12-31 13F TRANSOCEAN REGISTERED SHS Put 0 -100.00 0 -100.00 n/a n/a n/a
2024-11-14 2024-09-30 13F TRANSOCEAN REGISTERED SHS Put 303,600 0.00 1,290 -20.57 n/a n/a n/a
2024-08-14 2024-06-30 13F TRANSOCEAN REGISTERED SHS Put 303,600 26.87 1,624 8.12 n/a n/a n/a
2024-05-14 2024-03-31 13F TRANSOCEAN REGISTERED SHS Put 239,300 1,503 n/a n/a n/a
2019-05-15 2019-03-31 13F TRANSOCEAN REG SHS Put 0 -100.00 0 -100.00 n/a n/a n/a
2019-02-14 2018-12-31 13F TRANSOCEAN REG SHS Put 98,000 680 n/a n/a n/a
2017-02-14 2016-12-31 13F TRANSOCEAN REG SHS Put 0 -100.00 0 -100.00 n/a n/a n/a
2016-11-15 2016-09-30 13F TRANSOCEAN REG SHS Put 10,000 -33.33 107 -39.89 n/a n/a n/a
2016-08-15 2016-06-30 13F TRANSOCEAN REG SHS Put 15,000 178 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.