Odyssey Marine Exploration Inc (OMEX) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

7,978,935Shares Outstanding

203,031Shares held by institutions

$326,880Value of institutional holdings

9.23%Institutional ownership %

11.79%Shares Changed QoQ

29No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

The institutional landscape for Odyssey Marine Exploration Inc (NASDAQ:OMEX) includes 54 filers as of the latest reporting cycle ending December 2025.

The percentage of Odyssey Marine Exploration owned by institutions changed from 33.8% in September 2025 to 46.4% in December 2025, marking a slight up trend.
In percentage terms, this reflects as a holdings change of 44.29% quarter on quarter, and an increase of 42.11% year over year.
During the quarter, 35 institutions bought more Odyssey Marine Exploration shares, 7 sold shares, and 12 of the 54 total investors held their position steady.
The aggregate institutional position in Odyssey Marine Exploration now stands at 19.56Mn shares as of December 2025, after investors increased their holdings (up by 6.00Mn shares quarter on quarter which is up 12.56Mn shares year over year).
Old West Investment Management, LLC's holding of 5.50Mn shares as of December 31, 2025 makes it the primary institutional investor in Odyssey Marine Exploration, owning 13.03% of the stock.
Among the most significant buyers of Odyssey Marine Exploration during December 2025 were Old West Investment Management, LLC (1.82Mn), Jefferies Financial Group Inc. (1.10Mn), Two Seas Capital LP (615.02K), SUSQUEHANNA INTERNATIONAL GROUP, LLP (498.17K), RENAISSANCE TECHNOLOGIES LLC (456.64K).
Leading sellers of Odyssey Marine Exploration stock in December 2025 included GROUP ONE TRADING LLC (245.10K), CITADEL ADVISORS LLC (140.28K), STATE STREET CORP (18.00K), OSAIC HOLDINGS, INC. (5.00K), WELLS FARGO & COMPANY/MN (1.52K).
The top 10 institutional holders of Odyssey Marine Exploration for the quarter ending December 2025 included Old West Investment Management, LLC (5.50Mn), Two Seas Capital LP (5.19Mn), Jefferies Financial Group Inc. (1.50Mn), SUSQUEHANNA INTERNATIONAL GROUP, LLP (1.17Mn), VANGUARD GROUP INC (868.59K), Rangeley Capital, LLC (608.75K), GEODE CAPITAL MANAGEMENT, LLC (559.99K), RENAISSANCE TECHNOLOGIES LLC (488.60K), GROUP ONE TRADING LLC (457.72K), BlackRock, Inc. (415.07K).

54 Institutional Holders

203,031 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
Old West Investment Management, LLC	31 Dec, 2025	5,496,448	1,819,566	49.49%	$10,773,038.00
Two Seas Capital LP	31 Dec, 2025	5,185,029	615,018	13.46%	$10,162,657.00
Jefferies Financial Group Inc.	31 Dec, 2025	1,500,000	1,100,000	275.00%	$2,940,000.00
SUSQUEHANNA INTERNATIONAL GROUP, LLP	31 Dec, 2025	1,169,296	498,168	74.23%	$2,291,820.00
VANGUARD GROUP INC	31 Dec, 2025	868,585	228,221	35.64%	$1,702,427.00
Rangeley Capital, LLC	31 Dec, 2025	608,749	129,271	26.96%	$1,193,148.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	559,991	152,071	37.28%	$1,098,075.00
RENAISSANCE TECHNOLOGIES LLC	31 Dec, 2025	488,599	456,642	1,428.93%	$957,654.00
GROUP ONE TRADING LLC	31 Dec, 2025	457,719	-245,096	-34.87%	$897,129.00
BlackRock, Inc.	31 Dec, 2025	415,069	84,304	25.49%	$813,535.00
UBS Group AG	31 Dec, 2025	326,173	258,073	378.96%	$639,299.00
JANE STREET GROUP, LLC	31 Dec, 2025	315,655	211,106	201.92%	$618,684.00
SLT Holdings LLC	31 Dec, 2025	291,250	13,500	4.86%	$570,850.00
FOUNDATIONS INVESTMENT ADVISORS, LLC	31 Dec, 2025	291,250	13,500	4.86%	$570,850.00
MANGROVE PARTNERS IM, LLC	31 Dec, 2025	197,952	197,952	0.00%	$387,986.00
STATE STREET CORP	31 Dec, 2025	195,512	-18,000	-8.43%	$383,204.00
SIMPLEX TRADING, LLC	31 Dec, 2025	178,554	176,529	8,717.48%	$349,965.00
L. Roy Papp & Associates, LLP	31 Dec, 2025	152,461	0	0.00%	$298,824.00
NORTHERN TRUST CORP	31 Dec, 2025	117,441	20,649	21.33%	$230,184.00
XTX Topco Ltd	31 Dec, 2025	100,135	100,135	0.00%	$196,265.00

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