Transocean Ltd.
US ˙ NYSE ˙ CH0048265513

SecurityRIG / Transocean Ltd.
InstitutionPanagora Asset Management Inc
Latest Disclosed Ownership2,506,575 shares
Latest Disclosed Value $ 16,618,592
Panagora Asset Management Inc reports 22,500.08% increase in ownership of RIG / Transocean Ltd.

On May 14, 2026 - Panagora Asset Management Inc filed a 13F-HR form disclosing ownership of 2,506,575 shares of Transocean Ltd. (US:RIG) valued at $16,618,592 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 11,091 shares of Transocean Ltd.. This represents a change in shares of 22,500.08% during the quarter. The current value of the position is $14,914,121 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)
2026-05-14 2026-03-31 13F TRANSOCEAN REGISTERED SHS H8817H100 2,506,575 2,495,484 22,500.08 16,619 36,828.89 0.0623
2026-02-13 2025-12-31 13F TRANSOCEAN REGISTERED SHS H8817H100 11,091 11,091 46 0.0002
2021-11-10 2021-09-30 13F TRANSOCEAN REG SHS H8817H100 0 -1,175 -100.00 0 -100.00
2021-08-11 2021-06-30 13F TRANSOCEAN REG SHS H8817H100 1,175 -554,979 -99.79 5 -99.75 0.0000
2021-05-12 2021-03-31 13F TRANSOCEAN COMMON H8817H100 556,154 -6,299 -1.12 1,974 51.96 0.0111
2021-02-10 2020-12-31 13F TRANSOCEAN COMMON H8817H100 562,453 0 0.00 1,299 186.12 0.0077
2020-11-13 2020-09-30 13F TRANSOCEAN COMMON H8817H100 562,453 562,453 454 0.0028
2020-02-12 2019-12-31 13F TRANSOCEAN COMMON H8817H100 0 -112,485 -100.00 0 -100.00
2019-11-12 2019-09-30 13F TRANSOCEAN COMMON H8817H100 112,485 112,485 503 0.0023
2019-02-14 2018-12-31 13F TRANSOCEAN COMMON H8817H100 0 -1,210,756 -100.00 0 -100.00
2018-11-13 2018-09-30 13F TRANSOCEAN COMMON H8817H100 1,210,756 -752,087 -38.32 16,890 -35.98 0.0636
2018-08-14 2018-06-30 13F TRANSOCEAN COMMON H8817H100 1,962,843 1,661,124 550.55 26,381 783.19 0.1046
2018-05-15 2018-03-31 13F TRANSOCEAN COMMON H8817H100 301,719 212,981 240.01 2,987 215.08 0.0118
2018-02-14 2017-12-31 13F TRANSOCEAN COMMON H8817H100 88,738 -37,555 -29.74 948 -30.24 0.0036
2017-11-14 2017-09-30 13F TRANSOCEAN COMMON H8817H100 126,293 -384,941 -75.30 1,359 -67.70 0.0054
2017-08-14 2017-06-30 13F TRANSOCEAN COMMON H8817H100 511,234 21,566 4.40 4,207 -30.99 0.0169
2017-05-15 2017-03-31 13F TRANSOCEAN COMMON H8817H100 489,668 -57,862 -10.57 6,096 -24.47 0.0254
2017-02-14 2016-12-31 13F TRANSOCEAN COMMON H8817H100 547,530 -239,262 -30.41 8,071 -3.77 0.0370
2016-11-14 2016-09-30 13F TRANSOCEAN COMMON H8817H100 786,792 -128,631 -14.05 8,387 -22.94 0.0400
2016-08-15 2016-06-30 13F TRANSOCEAN COMMON H8817H100 915,423 19,344 2.16 10,884 32.89 0.0540
2016-05-16 2016-03-31 13F TRANSOCEAN COMMON H8817H100 896,079 193,796 27.60 8,190 -5.80 0.0407
2016-02-12 2015-12-31 13F TRANSOCEAN COMMON H8817H100 702,283 -16,083 -2.24 8,694 -6.32 0.0428
2015-11-13 2015-09-30 13F TRANSOCEAN COMMON H8817H100 718,366 689,505 2,389.05 9,281 1,895.91 0.0490
2015-08-14 2015-06-30 13F TRANSOCEAN COMMON H8817H100 28,861 11,071 62.23 465 78.16 0.0023
2015-05-15 2015-03-31 13F TRANSOCEAN COMMON H8817H100 17,790 2,208 14.17 261 -8.74 0.0013
2015-02-13 2014-12-31 13F TRANSOCEAN COMMON H8817H100 15,582 -1,181 -7.05 286 -46.64 0.0015
2014-11-12 2014-09-30 13F TRANSOCEAN COMMON H8817H100 16,763 2,463 17.22 536 -16.77 0.0026
2014-08-14 2014-06-30 13F TRANSOCEAN COMMON H8817H100 14,300 -4,096 -22.27 644 -15.26 0.0031
2014-05-15 2014-03-31 13F TRANSOCEAN COMMON H8817H100 18,396 1,640 9.79 760 -8.21 0.0036
2014-02-21 2013-12-31 13F TRANSOCEAN COMMON H8817H100 16,756 11,846 241.26 828 279.82 0.0038
2013-11-14 2013-09-30 13F TRANSOCEAN COMMON H8817H100 4,910 0 0.00 218 -7.23 0.0011
2013-08-14 2013-06-30 13F TRANSOCEAN COMMON H8817H100 4,910 4,910 235 0.0012
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.