Odyssey Marine Exploration OMEX Institutional Ownership

NASDAQ OMEX

$0.68 +0.00 (+0.00%)

At close: Sep 30, 2026 · 4:00 PM EDT

Institutions by Trading Activity

61 Institutions

Increased 29 47.5%

Unchanged 21 34.4%

Reduced 11 18.0%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

41.76%

▲+3.16 pp QoQ

Shares Held by Institutions

24.47Mn

of 58.59Mn outstanding

▲+19.53% QoQ

Shares Outstanding

58.59Mn

34.12Mn held outside 13F filers

Institutional Investors

filed 13F for Jun 2026

■0 vs prior quarter

Net Shares Added (QoQ)

+4.00Mn

accumulated since last quarter

Value of Holdings

$16.64Mn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

Odyssey Marine Exploration Inc (NASDAQ:OMEX) appears in 61 institutional 13F filings for the quarter ending June 2026.

They owned 41.8% of outstanding stock in June 2026, up from 38.6% the prior quarter.
Their total shares held in OMEX increased 19.53% quarter over quarter, and separately, investors owning Odyssey Marine Exploration increased 35.56% from a year ago.
Of these 61 funds, 29 grew their exposure to Odyssey Marine Exploration, 11 cut back, and 21 maintained positions.
Altogether, these fund groups held 24.47Mn shares in OMEX by June 2026, up by 4.0Mn shares quarter on quarter, and up 20.42Mn shares year over year.
As of June 30, 2026, the biggest holder of Odyssey Marine Exploration is Two Seas Capital LP at 5.59Mn shares, representing 9.55% of shares outstanding.
The most significant purchases of OMEX for the quarter ending June 2026 came from CITADEL ADVISORS LLC (2.49Mn), Morgan Stanley (1.38Mn), UBS Group AG (837.73K), BlackDiamond Wealth Management, LLC (100.0K), BlackRock, Inc. (66.85K).
The largest sales of OMEX for the quarter ending June 2026 came from JANE STREET GROUP, LLC (303.13K), Old West Investment Management, LLC (270.52K), SUSQUEHANNA INTERNATIONAL GROUP, LLP (162.18K), FOUNDATIONS INVESTMENT ADVISORS, LLC (155.5K), SLT Holdings LLC (155.5K).
Odyssey Marine Exploration's 10 largest shareholders as of June 2026 include Two Seas Capital LP (5.59Mn), Old West Investment Management, LLC (4.5Mn), CITADEL ADVISORS LLC (4.04Mn), VANGUARD CAPITAL MANAGEMENT LLC (2.39Mn), Jefferies Financial Group Inc. (1.5Mn), Morgan Stanley (1.38Mn), UBS Group AG (1.2Mn), SUSQUEHANNA INTERNATIONAL GROUP, LLP (666.4K), GEODE CAPITAL MANAGEMENT, LLC (602.77K), BlackRock, Inc. (458.79K) per Business Quant data.

Form 13F Holdings

61 Institutional Holders

Report period 30 Jun, 2026

Total shares held 24.47Mn

Of outstanding 41.76%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	Two Seas Capital LP	0001823138	5,592,985	9.55%	0	0.00%	$4.76Mn
2	Old West Investment Management, LLC	0001549358	4,502,674	7.69%	▼270,522	-5.67%	$3.83Mn
3	CITADEL ADVISORS LLC	0001423053	4,036,680	6.89%	▲2,487,598	+160.59%	$14.67Mn
4	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	2,394,545	4.09%	▼2,096	-0.09%	$2.04Mn
5	Jefferies Financial Group Inc.	0000096223	1,500,000	2.56%	0	0.00%	$1.28Mn
6	Morgan Stanley	0000895421	1,382,420	2.36%	▲1,381,327	+126,379.41%	$1.18Mn
7	UBS Group AG	0001610520	1,201,457	2.05%	▲837,727	+230.32%	$1.02Mn
8	SUSQUEHANNA INTERNATIONAL GROUP, LLP	0001446194	666,396	1.14%	▼162,181	-19.57%	$566.70K
9	GEODE CAPITAL MANAGEMENT, LLC	0001214717	602,772	1.03%	▼2,590	-0.43%	$512.84K
10	BlackRock, Inc.	0002012383	458,789	0.78%	▲66,851	+17.06%	$390.15K
11	VANGUARD FIDUCIARY TRUST CO	0000933478	299,555	0.51%	▲32,996	+12.38%	$254.62K
12	State Street Corp	0000093751	229,812	0.39%	0	0.00%	$195.43K
13	XTX Topco Ltd	0001828301	171,844	0.29%	▼49,968	-22.53%	$146.14K
14	L. Roy Papp & Associates, LLP	0000809339	152,461	0.26%	0	0.00%	$129.65K
15	GROUP ONE TRADING LLC	0000932540	148,438	0.25%	▲21,619	+17.05%	$126.23K
16	Northern Trust Corp	0000073124	123,442	0.21%	▲6,001	+5.11%	$104.98K
17	Rockefeller Capital Management L.P.	0001739439	116,749	0.20%	▼7,000	-5.66%	$99.28K
18	VOISARD ASSET MANAGEMENT GROUP, INC.	0002011215	108,000	0.18%	0	0.00%	$91.84K
19	Caprock Group, LLC	0001610769	105,140	0.18%	▲20,000	+23.49%	$89.41K
20	BlackDiamond Wealth Management, LLC	0001903059	100,000	0.17%	▲100,000	0.00%	$87.65K

Showing 1 to 20 of 61 holders