Transocean

RIG • NYSE

Transocean is a oil & gas drilling company in the energy sector on NYSE, with a market cap of $4.5B. As of Q3 2025, 68% of shares are held by 440 institutional investors, with VANGUARD GROUP INC as the largest holder at 8.58%.

Market Cap$4.5B

Oil & Gas Drilling

Energy

Employees5.4K

Websitedeepwater.com

Country

United States of America

Overview

Overview of institutional ownership in RIG as of Q3 2025 with a market cap of $3.4B

All Institutions

Institutions: 440
Value Held: $2.3B
Shares Held: 748.2M
Avg Position: $5.3M
Median Position: $132.0K

Hedge Funds

Hedge Funds: 66
Value Held: $647.3M
Shares Held: 207.5M
Avg Position: $9.8M
Median Position: $2.3M

Ownership Breakdown

Institutional (non-HF)

49.11%

$1.7B

Hedge Funds

18.84%

$647.3M

Retail & Other

32.05%

$1.1B

Based on market cap of $3.4B as of Q3 2025. Institutional (non-HF) excludes hedge funds to avoid double counting.

Biggest Investors

Institutions with the largest positions in RIG as of Q3 2025

Institution	Key People	Position Value	Ownership	Owned Since	Total AUM (Long)
VANGUARD GROUP INC Institution	Salim Ramji CEO	$294.9M 0.00% of portfolio	8.58% 94.5M shares	≤ Q2 2013 Held for 12y 5m+	$6.69T
B BlackRock, Inc. Institution	-	$265.9M 0.00% of portfolio	7.74% 85.2M shares	≤ Q2 2013 Held for 12y 5m+	$5.67T
DIMENSIONAL FUND ADVISORS LP Long Only Manager	David Paul Butler CEO	$112.2M 0.02% of portfolio	3.27% 36.0M shares	≤ Q2 2013 Held for 12y 5m+	$466.32B
P Pilgrim Global Advisors LLC Hedge Fund•Value	Kean Hua Chung Owner	$99.1M 19.24% of portfolio	2.88% 31.8M shares	Q3 2024 Held for 1y 2m	$514.9M
A AMERICAN CENTURY COMPANIES INC Institution	-	$82.5M 0.04% of portfolio	2.40% 26.5M shares	Q2 2020 Held for 5y 5m	$195.93B
Dalal Street, LLC Hedge Fund•Value	Mohnish Pabrai Managing Partner	$76.3M 22.64% of portfolio	2.22% 24.4M shares	Q3 2025 Held for 2 months	$336.9M
MORGAN STANLEY RIA/Wealth	Jed Finn CEO	$70.7M 0.00% of portfolio	2.06% 22.7M shares	≤ Q2 2013 Held for 12y 5m+	$1.65T
GOLDMAN SACHS GROUP INC Institution	David M. Solomon CEO	$68.5M 0.01% of portfolio	1.99% 22.0M shares	≤ Q2 2013 Held for 12y 5m+	$691.34B
STATE STREET CORP Institution	Ronald P. O'Hanley CEO	$68.2M 0.00% of portfolio	1.99% 21.9M shares	≤ Q2 2013 Held for 12y 5m+	$2.88T
GEODE CAPITAL MANAGEMENT LLC ETF Provider	David Kenneth Lane CEO	$66.4M 0.00% of portfolio	1.93% 21.3M shares	≤ Q2 2013 Held for 12y 5m+	$1.57T

Net Capital Flow

Institutional buying and selling activity for RIG in Q3 2025

Traded: +$469.7M
Buyers: 244
Sellers: 145
Total Bought: +$687.0M
Total Sold: −$217.4M
Avg Position: $4.7M

Biggest Buyers

Institution	Net Bought	Current Position
Dalal Street, LLC Hedge Fund•Value	+$76.3M +24.4M shares	$76.3M 24.4M shares
Ghisallo Capital Management LLC Hedge Fund•Multi-Strategy	+$57.7M +18.5M shares	$57.7M 18.5M shares
VANGUARD GROUP INC Institution	+$47.8M +15.3M shares	$294.9M 94.5M shares
P Pilgrim Global Advisors LLC Hedge Fund•Value	+$44.2M +14.2M shares	$99.1M 31.8M shares
B BlackRock, Inc. Institution	+$33.3M +10.7M shares	$265.9M 85.2M shares
GOLDMAN SACHS GROUP INC Institution	+$31.3M +10.0M shares	$68.5M 22.0M shares
Z Zimmer Partners, LP Hedge Fund•Long/Short	+$30.3M +9.7M shares	$30.3M 9.7M shares
Y Yaupon Capital Management LP Hedge Fund•Multi-Strategy	+$25.7M +8.3M shares	$25.7M 8.3M shares
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	+$24.3M +7.8M shares	$37.0M 11.9M shares
G GENDELL JEFFREY L Institution	+$20.7M +6.6M shares	$25.0M 8.0M shares

Biggest Sellers

Institution	Net Sold	Current Position
C Capital World Investors Institution	−$56.4M −18.1M shares	$58.2M 18.7M shares
RENAISSANCE TECHNOLOGIES LLC Hedge Fund•Quant	−$27.7M −8.9M shares	$5.5M 1.7M shares
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	−$20.7M −6.6M shares	$14.2M 4.6M shares
J Jump Financial, LLC Institution	−$15.0M −5.8M shares	Sold Off 0 shares
PRIMECAP MANAGEMENT CO/CA/ Long Only Manager	−$9.5M −3.0M shares	$31.5M 10.1M shares
DIMENSIONAL FUND ADVISORS LP Long Only Manager	−$9.2M −2.9M shares	$112.2M 36.0M shares
S Squarepoint Ops LLC Hedge Fund•Quant	−$7.9M −2.5M shares	$2.6M 829.5K shares
Kailix Advisors LLC RIA/Wealth	−$7.0M −2.7M shares	Sold Off 0 shares
SUNRISE PARTNERS LIMITED PARTNERSHIP /CT Hedge Fund•Multi-Strategy	−$6.9M −2.2M shares	$6.2M 2.0M shares
TUDOR INVESTMENT CORP ET AL Hedge Fund•Multi-Strategy	−$6.7M −2.1M shares	$6.6M 2.1M shares

Entry and Exit Activity

Institutions that initiated new positions or completely exited RIG in Q3 2025

New Positions: 41
New Value: $214.3M
Exited Positions: 49
Exited Value: $34.3M

New Positions

Institution	Position Value
Dalal Street, LLC Hedge Fund•Value	$76.3M 24.4M shares
Ghisallo Capital Management LLC Hedge Fund•Multi-Strategy	$57.7M 18.5M shares
Z Zimmer Partners, LP Hedge Fund•Long/Short	$30.3M 9.7M shares
Burkehill Global Management, LP Hedge Fund•Event Driven	$17.2M 5.5M shares
S SEVEN GRAND MANAGERS, LLC Hedge Fund•Multi-Strategy	$8.6M 2.8M shares
M MAVEN SECURITIES Ltd Private Equity	$4.7M 1.5M shares
Polar Securities Inc. Hedge Fund•Multi-Strategy	$4.0M 1.3M shares
P Polymer Capital Management LLC Hedge Fund•Multi-Strategy	$3.2M 1.0M shares
Sourcerock Group LLC Hedge Fund•Long/Short	$3.1M 1.0M shares
Blackstone Group L.P. Institution	$2.3M 750.0K shares

Exited Positions

Institution	Previous Position
J Jump Financial, LLC Institution	$15.0M 5.8M shares
Kailix Advisors LLC RIA/Wealth	$7.0M 2.7M shares
UBS GLOBAL ASSET MANAGEMENT AMERICAS INC Long Only Manager	$5.0M 1.9M shares
MUHLENKAMP & CO INC RIA/Wealth	$2.7M 1.1M shares
Centiva Capital, LP Hedge Fund•Multi-Strategy	$667.2K 257.6K shares
Q Qube Research & Technologies Ltd Institution	$571.1K 220.5K shares
BALYASNY ASSET MANAGEMENT LLC Hedge Fund•Multi-Strategy	$463.5K 179.0K shares
B BW Gestao de Investimentos Ltda. Institution	$388.5K 150.0K shares
BOURGEON CAPITAL MANAGEMENT LLC RIA/Wealth	$372.3K 143.8K shares
Q Quadrature Capital Ltd Institution	$371.8K 143.8K shares

Options Activity

Institutions with the largest Call and Put options positions in RIG as of Q3 2025

Call Positions: 21
Call Value: $50.1M
Put Positions: 20
Put Value: $85.4M

Call Positions

Institution	Position Value
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	$15.0M 48.1K contracts
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	$9.7M 31.2K contracts
M MASTERS CAPITAL MANAGEMENT LLC Hedge Fund•Long/Short	$6.2M 20.0K contracts
GOLDMAN SACHS GROUP INC Institution	$3.1M 10.0K contracts
Walleye Trading LLC RIA/Wealth	$2.7M 8.6K contracts
UBS Group AG Institution	$2.3M 7.5K contracts
D D. E. Shaw & Co., Inc. Institution	$2.1M 6.8K contracts
W WOLVERINE TRADING, LLC Institution	$1.9M 6.0K contracts
Point72 Asset Management, L.P. Hedge Fund•Multi-Strategy	$1.8M 5.6K contracts
J JANE STREET GROUP, LLC Institution	$1.5M 4.8K contracts

Put Positions

Institution	Position Value
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	$32.5M 104.2K contracts
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	$10.6M 34.0K contracts
J JANE STREET GROUP, LLC Institution	$9.7M 31.0K contracts
DLD Asset Management, LP Hedge Fund•Multi-Strategy	$9.1M 29.1K contracts
Walleye Trading LLC RIA/Wealth	$6.1M 19.4K contracts
WOLVERINE ASSET MANAGEMENT LLC Hedge Fund•Multi-Strategy	$3.9M 12.6K contracts
W WHITEBOX ADVISORS LLC Hedge Fund•Multi-Strategy	$3.1M 10.0K contracts
D D. E. Shaw & Co., Inc. Institution	$2.5M 8.0K contracts
UBS Group AG Institution	$2.4M 7.7K contracts
P Parallax Volatility Advisers, LLC Hedge Fund•Vol Arbitrage	$2.0M 6.4K contracts

Most Committed Institutions

Institutions with RIG as the highest % of their portfolio as of Q3 2025

Institution	Key People	Portfolio Weight	Ownership	Owned Since	Total AUM (Long)
Dalal Street, LLC Hedge Fund•Value	Mohnish Pabrai Managing Partner	22.64% $76.3M	2.22% 24.4M shares	Q3 2025 Held for 2 months	$336.9M
P Pilgrim Global Advisors LLC Hedge Fund•Value	Kean Hua Chung Owner	19.24% $99.1M	2.88% 31.8M shares	Q3 2024 Held for 1y 2m	$514.9M
S Solus Alternative Asset Management LP Hedge Fund•Distressed	Christopher Anthony Pucillo CEO	5.00% $13.9M	0.41% 4.5M shares	Q3 2023 Held for 2y 2m	$278.7M
L Lloyd Harbor Capital Management, LLC Hedge Fund•Multi-Strategy	Timothy James Rotolo CEO	4.33% $9.0M	0.26% 2.9M shares	Q2 2025 Held for 5 months	$208.4M
Ghisallo Capital Management LLC Hedge Fund•Multi-Strategy	Michael Walter Germino CEO	3.33% $57.7M	1.68% 18.5M shares	Q3 2025 Held for 2 months	$1.7B
SUNRISE PARTNERS LIMITED PARTNERSHIP /CT Hedge Fund•Multi-Strategy	Ravi Mohan Singh CEO	3.09% $6.2M	0.18% 2.0M shares	Q1 2025 Held for 8 months	$202.2M
Corigliano Investment Advisers, LLC Hedge Fund•Sector	Mark E Corigliano CEO	2.66% $8.2M	0.24% 2.6M shares	Q2 2025 Held for 5 months	$308.5M
Ninepoint Partners LP Hedge Fund•Multi-Strategy	James Robert Fox Managing Partner	2.58% $18.7M	0.54% 6.0M shares	Q3 2025 Held for 2 months	$724.2M
M Maso Capital Partners Ltd Institution	-	1.85% $1.0M	0.03% 330.0K shares	Q3 2025 Held for 2 months	$55.5M
I Ion Asset Management Ltd. Institution	-	1.85% $13.1M	0.38% 4.2M shares	Q4 2022 Held for 2y 11m	$707.1M

Hedge Fund Spotlight

Discover hedge funds investing in RIG

AIGEN INVESTMENT MANAGEMENT, LP

Hedge Fund • Long/Short

Portfolio ManagerJuhua Zhu

Portfolio Value: $646.1M
Positions: 764
Last Reported: Q3 2025

Sector Allocation

Position in Transocean

Market Value: $283.3K
Shares Held: 90.8K
Portfolio Weight: 0.04%
Owned Since: 2024-Q4

Top Holding	Sector	Market Value	Weight
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2 Honeywell International HON	Conglomerates Industrials	$7.1M	1.10%
3 Boston Scientific BSX	Medical - Devices Healthcare	$6.7M	1.04%