Transocean Ltd.
US ˙ NYSE ˙ CH0048265513

SecurityRIG / Transocean Ltd.
InstitutionLazard Asset Management Llc
Latest Disclosed Ownership29,765 shares
Latest Disclosed Value $ 197,342
Lazard Asset Management Llc ownership in RIG / Transocean Ltd.

On May 15, 2026 - Lazard Asset Management Llc filed a 13F-HR form disclosing ownership of 29,765 shares of Transocean Ltd. (US:RIG) valued at $197,342 USD as of March 31, 2026. The entity filed a previous 13F-HR on November 14, 2025 disclosing 0 shares of Transocean Ltd.. The current value of the position is $177,102 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)
2026-05-15 2026-03-31 13F TRANSOCEAN REGISTERED SHS H8817H100 29,765 29,765 197 0.0003
2025-11-14 2025-09-30 13F TRANSOCEAN Common Stock H8817H100 0 -141,358 -100.00 0 0.0000
2025-08-14 2025-06-30 13F TRANSOCEAN Common Stock H8817H100 141,358 141,358 0 0.0005
2025-02-14 2024-12-31 13F TRANSOCEAN Common Stock H8817H100 0 -34,888 -100.00 0 0.0000
2024-11-14 2024-09-30 13F TRANSOCEAN Common Stock H8817H100 34,888 34,888 0 0.0002
2024-07-09 2024-03-31 13F/A-1 TRANSOCEAN Common Stock H8817H100 0 -45,138 -100.00 0 0.0000
2024-05-14 2024-03-31 13F TRANSOCEAN Common Stock H8817H100 0 -45,138 0 0.0000
2024-02-14 2023-12-31 13F TRANSOCEAN Common Stock H8817H100 45,138 45,138 0 0.0004
2021-02-11 2020-12-31 13F TRANSOCEAN Common Stock H8817H100 0 -578 -100.00 0 0.0000
2020-11-13 2020-09-30 13F TRANSOCEAN Common Stock H8817H100 578 0 0.00 0 -100.00
2020-08-13 2020-06-30 13F TRANSOCEAN Common Stock H8817H100 578 578 1 0.0000
2019-08-30 2018-09-30 13F/A-1 TRANSOCEAN Common Stock H8817H100 0 -192,720 -100.00 0 -100.00
2019-08-30 2018-06-30 13F/A-1 TRANSOCEAN Common Stock H8817H100 192,720 192,720 2,590 0.0045
2018-08-13 2018-06-30 13F TRANSOCEAN Common Stock H8817H100 192,720 192,720 2,590
2015-05-15 2015-03-31 13F TRANSOCEAN Common Stock H8817H100 0 -78 -100.00 0 -100.00
2019-08-29 2014-12-31 13F/A-3 TRANSOCEAN Common Stock H8817H100 78 -6,434,000 -100.00 1 -100.00 0.0000
2015-02-12 2014-12-31 13F TRANSOCEAN Common Stock H8817H100 78 -6,434,000 1
2014-11-07 2014-09-30 13F TRANSOCEAN Common Stock H8817H100 6,434,078 -195,188 -2.94 205,696 -31.09 0.4417
2014-08-12 2014-06-30 13F TRANSOCEAN Common Stock H8817H100 6,629,266 111,314 1.71 298,514 10.79 0.6240
2014-05-12 2014-03-31 13F TRANSOCEAN Common Stock H8817H100 6,517,952 -2,102,393 -24.39 269,450 -36.75 0.6019
2014-02-14 2013-12-31 13F TRANSOCEAN Common Stock H8817H100 8,620,345 3,637,760 73.01 426,016 92.14 0.9456
2014-01-13 2013-09-30 13F/A-1 TRANSOCEAN Common Stock H8817H100 4,982,585 1,970,250 65.41 221,723 53.50 0.5261
2013-11-13 2013-09-30 13F TRANSOCEAN Common Stock H8817H100 4,993,070 222,190
2013-08-13 2013-06-30 13F TRANSOCEAN Common Stock H8817H100 3,012,335 3,012,335 144,441 0.3423
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.