Transocean Ltd.
US ˙ NYSE ˙ CH0048265513

SecurityRIG / Transocean Ltd.
InstitutionKentucky Retirement Systems
Latest Disclosed Ownership27,985 shares
Latest Disclosed Value $ 1,383
Kentucky Retirement Systems ownership in RIG / Transocean Ltd.

On May 19, 2026 - Kentucky Retirement Systems filed a 13F-HR form disclosing ownership of 27,985 shares of Transocean Ltd. (US:RIG) valued at $185,541 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 25, 2019 disclosing 0 shares of Transocean Ltd.. The current value of the position is $166,511 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)
2026-05-19 2026-03-31 13F TRANSOCEAN REG SHS H8817H100 27,985 27,985 1 0.1013
2019-02-25 2018-12-31 13F TRANSOCEAN REG SHS H8817H100 0 -27,985 -100.00 0 -100.00
2018-11-16 2018-09-30 13F TRANSOCEAN REG SHS H8817H100 27,985 27,985 1,383 0.1013
2017-11-08 2017-09-30 13F TRANSOCEAN REG SHS H8817H100 0 -25,068 -100.00 0 -100.00
2017-08-18 2017-06-30 13F TRANSOCEAN REG SHS H8817H100 25,068 109 0.44 206 -33.76 0.0155
2017-05-24 2017-03-31 13F TRANSOCEAN REG SHS H8817H100 24,959 -3,290 -11.65 311 -25.24 0.0239
2017-02-24 2016-12-31 13F TRANSOCEAN REG SHS H8817H100 28,249 323 1.16 416 39.60 0.0298
2016-11-30 2016-09-30 13F TRANSOCEAN REG SHS H8817H100 27,926 -1,267 -4.34 298 -14.12 0.0198
2016-09-12 2016-06-30 13F TRANSOCEAN REG SHS H8817H100 29,193 -2,251 -7.16 347 20.91 0.0224
2016-06-09 2016-03-31 13F TRANSOCEAN REG SHS H8817H100 31,444 5,474 21.08 287 -10.87 0.0174
2016-02-22 2015-12-31 13F TRANSOCEAN REG SHS H8817H100 25,970 2,521 10.75 322 6.27 0.0237
2015-11-18 2015-09-30 13F TRANSOCEAN REG SHS H8817H100 23,449 403 1.75 303 -18.55 0.0261
2015-08-26 2015-06-30 13F TRANSOCEAN REG SHS H8817H100 23,046 124 0.54 372 10.71 0.0303
2015-05-29 2015-03-31 13F TRANSOCEAN REG SHS H8817H100 22,922 -2,390 -9.44 336 -27.59 0.0273
2015-03-04 2014-12-31 13F TRANSOCEAN REG SHS H8817H100 25,312 -1,174 -4.43 464 -45.22 0.0342
2014-12-12 2014-09-30 13F TRANSOCEAN REG SHS H8817H100 26,486 -1,645 -5.85 847 -27.17 0.0622
2014-05-22 2014-03-31 13F TRANSOCEAN REG SHS H8817H100 28,131 146 0.52 1,163 -15.91 0.0840
2014-02-13 2013-12-31 13F TRANSOCEAN REG SHS H8817H100 27,985 27,985 1,383 0.1013
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.