Odyssey Marine Exploration

OMEX • NASDAQ

Odyssey Marine Exploration is a specialty business services company in the industrials sector on NASDAQ, led by Mark D. Gordon, with a market cap of $131.0M. As of Q3 2025, 30% of shares are held by 51 institutional investors, with Two Seas Capital LP as the largest holder at 9.6%.

Chief Executive OfficerMark D. Gordon

Market Cap$131.0M

Specialty Business Services

Industrials

Employees11.0

Websiteodysseymarine.com

Country

United States of America

Overview

Overview of institutional ownership in OMEX as of Q3 2025 with a market cap of $92.9M

All Institutions

Institutions: 51
Value Held: $27.7M
Shares Held: 14.2M
Avg Position: $543.9K
Median Position: $46.3K

Hedge Funds

Hedge Funds: 7
Value Held: $17.6M
Shares Held: 9.0M
Avg Position: $2.5M
Median Position: $306.1K

Ownership Breakdown

Institutional (non-HF)

10.91%

$10.1M

Hedge Funds

18.96%

$17.6M

Retail & Other

70.13%

$65.1M

Based on market cap of $92.9M as of Q3 2025. Institutional (non-HF) excludes hedge funds to avoid double counting.

Biggest Investors

Institutions with the largest positions in OMEX as of Q3 2025

Institution	Key People	Position Value	Ownership	Owned Since	Total AUM (Long)
T Two Seas Capital LP Hedge Fund•Event Driven	Sina Nmn Toussi CIO	$8.9M 0.54% of portfolio	9.60% 4.6M shares	Q4 2021 Held for 3y 11m	$1.7B
O Old West Investment Management, LLC Hedge Fund•Multi-Strategy	Chad William Cook Managing Partner	$7.2M 1.63% of portfolio	7.72% 3.7M shares	Q3 2025 Held for 2 months	$439.2M
G GROUP ONE TRADING, L.P. Institution	-	$1.4M 0.04% of portfolio	1.48% 702.8K shares	Q3 2021 Held for 4y 2m	$3.3B
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	-	$1.3M 0.00% of portfolio	1.41% 671.1K shares	Q2 2021 Held for 4y 5m	$67.9B
VANGUARD GROUP INC Institution	Salim Ramji CEO	$1.2M 0.00% of portfolio	1.34% 640.4K shares	≤ Q2 2013 Held for 12y 5m+	$6.69T
R Rangeley Capital, LLC Hedge Fund•Event Driven	Christopher Clay Demuth Jr. Managing Partner	$935.0K 0.89% of portfolio	1.01% 479.5K shares	Q3 2025 Held for 2 months	$105.5M
GEODE CAPITAL MANAGEMENT LLC ETF Provider	David Kenneth Lane CEO	$795.7K 0.00% of portfolio	0.86% 407.9K shares	≤ Q2 2013 Held for 12y 5m+	$1.57T
LEUCADIA NATIONAL CORP Institution	Richard B. Handler CEO	$780.0K 0.01% of portfolio	0.84% 400.0K shares	Q3 2025 Held for 2 months	$10.5B
B BlackRock, Inc. Institution	-	$645.0K 0.00% of portfolio	0.69% 330.8K shares	Q1 2017 Held for 8y 8m	$5.67T
SLT Holdings LLC RIA/Wealth	Zachary Stuart Brodt President	$541.6K 0.36% of portfolio	0.58% 277.8K shares	Q3 2025 Held for 2 months	$152.0M

Net Capital Flow

Institutional buying and selling activity for OMEX in Q3 2025

Traded: +$20.0M
Buyers: 31
Sellers: 9
Total Bought: +$20.0M
Total Sold: −$54.8K
Avg Position: $478.2K

Biggest Buyers

Institution	Net Bought	Current Position
O Old West Investment Management, LLC Hedge Fund•Multi-Strategy	+$7.2M +3.7M shares	$7.2M 3.7M shares
T Two Seas Capital LP Hedge Fund•Event Driven	+$6.1M +3.1M shares	$8.9M 4.6M shares
G GROUP ONE TRADING, L.P. Institution	+$1.2M +625.4K shares	$1.4M 702.8K shares
R Rangeley Capital, LLC Hedge Fund•Event Driven	+$935.0K +479.5K shares	$935.0K 479.5K shares
LEUCADIA NATIONAL CORP Institution	+$780.0K +400.0K shares	$780.0K 400.0K shares
Foundations Investment Advisors, LLC RIA/Wealth	+$541.6K +277.8K shares	$541.6K 277.8K shares
SLT Holdings LLC RIA/Wealth	+$541.6K +277.8K shares	$541.6K 277.8K shares
P PEAK6 LLC Institution	+$487.5K +250.0K shares	$487.5K 250.0K shares
VANGUARD GROUP INC Institution	+$349.2K +179.1K shares	$1.2M 640.4K shares
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	+$306.1K +157.0K shares	$306.1K 157.0K shares

Biggest Sellers

Institution	Net Sold	Current Position
W WOLVERINE TRADING, LLC Institution	−$14.6K −13.0K shares	Sold Off 0 shares
X XTX Topco Ltd Institution	−$13.5K −11.4K shares	Sold Off 0 shares
N NATIONAL BANK OF CANADA /FI/ Institution	−$11.0K −9.3K shares	Sold Off 0 shares
MORGAN STANLEY RIA/Wealth	−$7.3K −3.7K shares	$887.0 455.0 shares
Stonegate Investment Group, LLC RIA/Wealth	−$3.9K −2.0K shares	$140.5K 72.1K shares
SMITHBRIDGE ASSET MANAGEMENT INC/DE RIA/Wealth	−$2.0K −1.0K shares	$23.4K 12.0K shares
T TOTAL INVESTMENT MANAGEMENT INC Institution	−$1.2K −1.0K shares	Sold Off 0 shares
CITIGROUP INC Institution	−$829.0 −425.0 shares	$831.0 426.0 shares
RAYMOND JAMES FINANCIAL INC RIA/Wealth	−$615.0 −521.0 shares	Sold Off 0 shares

Entry and Exit Activity

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

New Positions: 9
New Value: $9.9M
Exited Positions: 7
Exited Value: $40.8K

New Positions

Institution	Position Value
O Old West Investment Management, LLC Hedge Fund•Multi-Strategy	$7.2M 3.7M shares
R Rangeley Capital, LLC Hedge Fund•Event Driven	$935.0K 479.5K shares
SLT Holdings LLC RIA/Wealth	$541.6K 277.8K shares
Foundations Investment Advisors, LLC RIA/Wealth	$541.6K 277.8K shares
P PEAK6 LLC Institution	$487.5K 250.0K shares
S Sender Co & Partners, Inc. Institution	$202.1K 103.6K shares
Centiva Capital, LP Hedge Fund•Multi-Strategy	$56.8K 29.1K shares
J JONES FINANCIAL COMPANIES LLLP Institution	$67.0 34.0 shares
FINANCIAL CONSULATE, INC RIA/Wealth	$18.0 9.0 shares

Exited Positions

Institution	Previous Position
W WOLVERINE TRADING, LLC Institution	$14.6K 13.0K shares
X XTX Topco Ltd Institution	$13.5K 11.4K shares
N NATIONAL BANK OF CANADA /FI/ Institution	$11.0K 9.3K shares
T TOTAL INVESTMENT MANAGEMENT INC Institution	$1.2K 1.0K shares
RAYMOND JAMES FINANCIAL INC RIA/Wealth	$615.0 521.0 shares
R ROYAL BANK OF CANADA Institution	- 397.0 shares
BARCLAYS PLC Institution	- 3.0 shares

Options Activity

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

Call Positions: 5
Call Value: $2.8M
Put Positions: 4
Put Value: $434.5K

Call Positions

Institution	Position Value
P PEAK6 LLC Institution	$1.2M 6.0K contracts
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	$1.0M 5.2K contracts
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	$364.7K 1.9K contracts
W WOLVERINE TRADING, LLC Institution	$174.9K 911.0 contracts
J JANE STREET GROUP, LLC Institution	$56.2K 288.0 contracts

Put Positions

Institution	Position Value
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	$265.0K 1.4K contracts
W WOLVERINE TRADING, LLC Institution	$96.2K 501.0 contracts
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	$73.3K 376.0 contracts
J JANE STREET GROUP, LLC Institution	- - contracts

Most Committed Institutions

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

Institution	Key People	Portfolio Weight	Ownership	Owned Since	Total AUM (Long)
O Old West Investment Management, LLC Hedge Fund•Multi-Strategy	Chad William Cook Managing Partner	1.63% $7.2M	7.72% 3.7M shares	Q3 2025 Held for 2 months	$439.2M
R Rangeley Capital, LLC Hedge Fund•Event Driven	Christopher Clay Demuth Jr. Managing Partner	0.89% $935.0K	1.01% 479.5K shares	Q3 2025 Held for 2 months	$105.5M
T Two Seas Capital LP Hedge Fund•Event Driven	Sina Nmn Toussi CIO	0.54% $8.9M	9.60% 4.6M shares	Q4 2021 Held for 3y 11m	$1.7B
SLT Holdings LLC RIA/Wealth	Zachary Stuart Brodt President	0.36% $541.6K	0.58% 277.8K shares	Q3 2025 Held for 2 months	$152.0M
S Sender Co & Partners, Inc. Institution	-	0.08% $202.1K	0.22% 103.6K shares	Q3 2025 Held for 2 months	$256.4M
G GROUP ONE TRADING, L.P. Institution	-	0.04% $1.4M	1.48% 702.8K shares	Q3 2021 Held for 4y 2m	$3.3B
Northwest Financial Advisors RIA/Wealth	Kevin Duane Fisher CEO	0.04% $29.4K	0.03% 15.1K shares	Q2 2025 Held for 5 months	$77.8M
P PAPP L ROY & ASSOCIATES RIA/Wealth	Rosellen C Papp Managing Partner	0.03% $297.3K	0.32% 152.5K shares	Q1 2025 Held for 8 months	$889.6M
VOISARD ASSET MANAGEMENT GROUP, INC. RIA/Wealth	Douglas Edward Voisard President	0.02% $82.5K	0.09% 42.3K shares	Q4 2023 Held for 1y 11m	$432.1M
P PEAK6 LLC Institution	-	0.01% $487.5K	0.53% 250.0K shares	Q3 2025 Held for 2 months	$3.7B

Hedge Fund Spotlight

Discover hedge funds investing in OMEX

Rangeley Capital, LLC

Hedge Fund • Event Driven

Portfolio ManagerChristopher Clay Demuth Jr.

Portfolio Value: $105.5M
Positions: 115
Last Reported: Q3 2025

Sector Allocation

Position in Odyssey Marine Exploration

Market Value: $935.0K
Shares Held: 479.5K
Portfolio Weight: 0.89%
Owned Since: 2025-Q3

Top Holding	Sector	Market Value	Weight
1 Delek US Holdings DK	Oil & Gas Refining & Marketing Energy	$6.6M	6.30%
2 Calumet, Inc. CLMT	Oil & Gas Exploration & Production Energy	$6.0M	5.72%
3 Arvinas ARVN	Biotechnology Healthcare	$5.9M	5.61%