RIG in the 13F filings

Transocean LTD · CUSIP H8817H100

Sector · Energy Theme · Energy and power infrastructure· L3VLUP-defined Theme · Oil and gas

Quarter

Q3 2026 · early filers Q2 2026 Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024 Q1 2024 Q4 2023

Quarter end: 31 Mar 2026; the date the book describes
Filed: 27 Oct 2026; latest of these filings; the earliest 12 May 2026
Managers listing it: 33; at least, of 95 tracked, among listed positions
Comparable managers: 91; filed both Q4 2025 and Q1 2026; 4 listed it in both
Shares listed: 221,219,185; combined, among listed positions
Reported value: $1.5bn; combined, at the quarter end

AllianceBernstein LP. Values in this filing are at the previous quarter end's prices; its share count is the quarter end's.

Among the 91 comparable managers: 24 buyers (opened or added shares) and 12 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +110,225,786.

Managers listing RIG in Q1 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q4 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

ActionShare of book at least

33 of 33 holders

				Action		Filing
Two Sigma Investments LP	46,463,736	$308m	0.25%	Added	+22,227,817	15 May 2026 (the filing on sec.gov)
D. E. Shaw & Co.	39,262,599	$260m	0.16%	Added	+22,837,568	15 May 2026 (the filing on sec.gov)
Capital World Investors	29,575,479	$196m	under 0.1%	Added	+13,909,743	13 May 2026 (the filing on sec.gov)
Voloridge Investment Management LLC	16,542,717	$110m	0.44%	New	new	15 May 2026 (the filing on sec.gov)
Marshall Wace LLP	16,043,764	$106m	0.11%	Added	+16,005,764	15 May 2026 (the filing on sec.gov)
Elliott Investment Management LP	15,626,834	$104m	0.52%	New	new	15 May 2026 (the filing on sec.gov)
Susquehanna International Group LLP	6,231,346	$41m	under 0.1%	Trimmed	-2,636,404	15 May 2026 (the filing on sec.gov)
Point72 Asset Management LP	5,406,425	$36m	under 0.1%	Added	+3,449,571	15 May 2026 (the filing on sec.gov)
Tudor Investment Corp	5,278,418	$35m	0.06%	Added	+5,102,324	15 May 2026 (the filing on sec.gov)
Millennium Management LLC	4,691,515	$31m	under 0.1%	Trimmed	-2,904,982	15 May 2026 (the filing on sec.gov)
Squarepoint Ops LLC	4,207,727	$28m	under 0.1%	Trimmed	-1,206,605	15 May 2026 (the filing on sec.gov)
Fidelity (FMR LLC)	3,933,339	$26m	under 0.1%	Added	+3,011,334	15 May 2026 (the filing on sec.gov)
Citadel Advisors LLC	3,514,711	$23m	under 0.1%	Trimmed	-3,490,818	15 May 2026 (the filing on sec.gov)
AQR Capital Management LLC	3,276,216	$22m	under 0.1%	Added	+301,660	15 May 2026 (the filing on sec.gov)
Rokos Capital Management LLP	3,169,572	$21m	0.16%	New	new	15 May 2026 (the filing on sec.gov)
Man Group PLC	3,151,637	$21m	under 0.1%	New	new	15 May 2026 (the filing on sec.gov)
Renaissance Technologies LLC	3,134,728	$21m	under 0.1%	Trimmed	-5,900,600	14 May 2026 (the filing on sec.gov)
Balyasny Asset Management LLC	2,510,772	$17m	under 0.1%	New	new	15 May 2026 (the filing on sec.gov)
Invesco Ltd	2,358,827	$16m	under 0.1%	Added	+1,388,467	12 May 2026 (the filing on sec.gov)
Neuberger Berman Group LLC	1,555,152	$10m	under 0.1%	Added	+346,559	27 Oct 2026 (the filing on sec.gov)
Acadian Asset Management LLC	1,234,579	$8.2m	under 0.1%	Added	+593,196	13 May 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc	1,040,311	$6.9m	under 0.1%	Added	+204,920	15 May 2026 (the filing on sec.gov)
Quantbot Technologies LP	697,100	$4.6m	0.19%	Added	+268,784	13 May 2026 (the filing on sec.gov)
AllianceBernstein LP	1,053,115	$4.3m	under 0.1%	Added	+136,500	15 May 2026 (the filing on sec.gov)
Janus Henderson Group Ltd	444,630	$2.9m	under 0.1%	Added	+22,453	18 May 2026 (the filing on sec.gov)

Page 1 of 2

Largest increases and reductions, by shares

Q4 2025 to Q1 2026, among managers that listed it in both quarters or opened it.

Increases

D. E. Shaw & Co.existing position · 39,262,599 shares now+22,837,568
Two Sigma Investments LPexisting position · 46,463,736 shares now+22,227,817
Voloridge Investment Management LLCnew position · 16,542,717 shares now+16,542,717
Marshall Wace LLPexisting position · 16,043,764 shares now+16,005,764
Elliott Investment Management LPnew position · 15,626,834 shares now+15,626,834

Reductions

Renaissance Technologies LLCexisting position · 3,134,728 shares now-5,900,600
Citadel Advisors LLCexisting position · 3,514,711 shares now-3,490,818
Millennium Management LLCexisting position · 4,691,515 shares now-2,904,982
Susquehanna International Group LLPexisting position · 6,231,346 shares now-2,636,404
Jane Street Group LLCexisting position · 15,935 shares now-1,844,828

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (7)

Voloridge Investment Management LLC$110m
Elliott Investment Management LP$104m
Rokos Capital Management LLP$21m
Man Group PLC$21m
Balyasny Asset Management LLC$17m
Brevan Howard Capital Management LP$296k
Hudson Bay Capital Management LP$11k

Exited (3)

Steadfast Capital Management LPwas $4.8m
Moore Capital Management LPwas $1.4m
ExodusPoint Capital Management LPwas $874k

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.

2 in Q3 2024 to 11 in Q2 2026

Tracked managers listing it, at least.

the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.

RIG by quarter
Quarter	Holders	Reported value	Buyers	Sellers
Q2 2013	12	$1.2bn	n.a.	n.a.
Q3 2013	12	$1.1bn	n.a.	n.a.
Q4 2013	9	$1.2bn	n.a.	n.a.
Q1 2014	6	$1.0bn	n.a.	n.a.
Q2 2014	5	$980m	n.a.	n.a.
Q3 2014	4	$719m	n.a.	n.a.
Q4 2014	11	$589m	n.a.	n.a.
Q1 2015	5	$393m	n.a.	n.a.
Q2 2015	6	$410m	n.a.	n.a.
Q3 2015	6	$509m	n.a.	n.a.
Q4 2015	6	$546m	n.a.	n.a.
Q1 2016	10	$476m	n.a.	n.a.
Q2 2016	11	$616m	n.a.	n.a.
Q3 2016	10	$248m	n.a.	n.a.
Q4 2016	12	$343m	n.a.	n.a.
Q1 2017	12	$229m	n.a.	n.a.
Q2 2017	5	$116m	n.a.	n.a.
Q3 2017	9	$282m	n.a.	n.a.
Q4 2017	9	$273m	n.a.	n.a.
Q1 2018	10	$375m	n.a.	n.a.
Q2 2018	8	$396m	n.a.	n.a.
Q3 2018	10	$374m	n.a.	n.a.
Q4 2018	8	$273m	n.a.	n.a.
Q1 2019	6	$145m	n.a.	n.a.
Q2 2019	4	$87m	n.a.	n.a.
Q3 2019	4	$13m	n.a.	n.a.
Q4 2019	2	$14m	n.a.	n.a.
Q1 2020	2	$14m	n.a.	n.a.
Q2 2020	1	$37k	n.a.	n.a.
Q4 2020	2	$19m	n.a.	n.a.
Q1 2021	3	$71m	n.a.	n.a.
Q2 2021	5	$240m	n.a.	n.a.
Q3 2021	5	$180m	n.a.	n.a.
Q4 2021	3	$69m	n.a.	n.a.
Q1 2022	6	$276m	n.a.	n.a.
Q2 2022	7	$176m	n.a.	n.a.
Q3 2022	6	$125m	n.a.	n.a.
Q4 2022	8	$312m	n.a.	n.a.
Q1 2023	10	$584m	n.a.	n.a.
Q2 2023	10	$690m	n.a.	n.a.
Q3 2023	11	$845m	n.a.	n.a.
Q4 2023	10	$711m	8	2
Q1 2024	12	$580m	12	1
Q2 2024	4	$407m	3	2
Q3 2024	2	$256m	1	0
Q4 2024	2	$195m	0	1
Q1 2025	4	$228m	2	1
Q2 2025	4	$188m	4	1
Q3 2025	5	$184m	3	2
Q4 2025	7	$302m	16	15
Q1 2026	10	$1.2bn	24	12
Q2 2026	11	$959m	14	17

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

RIG and GEV →RIG and XOM →RIG and CVX →Choose a stock to compare with RIG →

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own RIG, latest filings →Back to the 13F Explorer →

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