Transocean Ltd.
US ˙ NYSE ˙ CH0048265513

SecurityRIG / Transocean Ltd.
InstitutionCourier Capital Llc
Latest Disclosed Ownership38,628 shares
Latest Disclosed Value $ 256,104
Courier Capital Llc reports 12.15% decrease in ownership of RIG / Transocean Ltd.

On April 23, 2026 - Courier Capital Llc filed a 13F-HR/A form disclosing ownership of 38,628 shares of Transocean Ltd. (US:RIG) valued at $256,104 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 43,972 shares of Transocean Ltd.. This represents a change in shares of -12.15% during the quarter. The current value of the position is $238,721 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)
2026-04-23 2026-03-31 13F/A-1 TRANSOCEAN REGISTERED SHS H8817H100 38,628 -5,344 -12.15 256 41.44 0.0143
2026-04-20 2026-03-31 13F TRANSOCEAN REGISTERED SHS H8817H100 38,628 -5,344 -12.15 256 41.44 0.0143
2026-01-29 2025-12-31 13F TRANSOCEAN REGISTERED SHS H8817H100 43,972 -5,377 -10.90 182 18.30 0.0102
2025-10-29 2025-09-30 13F TRANSOCEAN REGISTERED SHS H8817H100 49,349 5,195 11.77 154 34.21 0.0088
2025-07-28 2025-06-30 13F TRANSOCEAN REGISTERED SHS H8817H100 44,154 0 0.00 114 -17.99 0.0069
2025-04-14 2025-03-31 13F TRANSOCEAN REGISTERED SHS H8817H100 44,154 14,261 47.71 140 24.11 0.0092
2025-01-13 2024-12-31 13F TRANSOCEAN REGISTERED SHS H8817H100 29,893 0 0.00 112 -11.81 0.0077
2024-10-22 2024-09-30 13F TRANSOCEAN REGISTERED SHS H8817H100 29,893 0 0.00 127 -20.13 0.0087
2024-07-23 2024-06-30 13F TRANSOCEAN REGISTERED SHS H8817H100 29,893 7,155 31.47 160 11.97 0.0127
2024-04-16 2024-03-31 13F TRANSOCEAN REGISTERED SHS H8817H100 22,738 0 0.00 143 -1.39 0.0103
2024-01-17 2023-12-31 13F TRANSOCEAN REG SHS H8817H100 22,738 5,031 28.41 144 -0.69 0.0110
2023-10-13 2023-09-30 13F TRANSOCEAN REG SHS H8817H100 17,707 17,707 145 0.0121
2018-07-19 2018-06-30 13F TRANSOCEAN REG SHS H8817H100 0 -10,891 -100.00 0 -100.00
2018-04-27 2018-03-31 13F TRANSOCEAN REG SHS H8817H100 10,891 6,333 138.94 108 -52.00 0.0142
2014-02-14 2013-12-31 13F TRANSOCEAN REG SHS H8817H100 4,558 4,558 225 0.0479
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.