OMEX · Odyssey Marine Exploration Inc

$0.82 -0.08 (-8.63%) At close · Aug 28

Market Cap

$48.36M

58.69M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Quarter:

Holders: 58

Total Value: $21,291,772

Total Shares: 25,049,175

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 58 13F filers · Δ vs Mar 31, 2026

Top Holder

22.3%

−3.0 pts

Top 5

73.1%

+0.5 pts

Top 10

90.9%

+4.6 pts

HHI

1,325

Broadly held−65

Quarterly Activity

vs Mar 31, 2026

New

Increased

Decreased

Sold Out

Unchanged

Holder count: -3

Institutional value: +15.4%

Shares held: +13.2%

Top Buyers

vs Mar 31, 2026

Institution	Added	Now Holds
Mega CITADEL ADVISORS LLC	+2,511,298	4,321,080
Mega MORGAN STANLEY	+1,381,327	1,382,420
Mega UBS Group AG	+837,727	1,201,457
Mega BlackRock, Inc.	+66,851	458,789
Mega JPMORGAN CHASE & CO	+57,408	72,651

Top Sellers

vs Mar 31, 2026

Institution	Sold	Now Holds
Small Old West Investment Management, LLC	−270,522	4,502,674
Mega JANE STREET GROUP, LLC	−251,630	196,831
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP	−223,581	824,996
Mid Foundations Investment Advisors, LLC	−155,500	28,250
Small SLT Holdings LLC	−155,500	28,250

Top New Positions

vs Mar 31, 2026

Institution	Acquired	Value (USD)
Small BlackDiamond Wealth Management, LLC	100,000	$85,000
Large TD Waterhouse Canada Inc.	15,000	$12,750
Mega LPL Financial LLC	14,444	$12,277
Mid Private Advisor Group, LLC	13,642	$11,595
Small Bay Colony Advisory Group, Inc d/b/a Bay Colony Advisors	12,500	$10,625

Top Sold-Out Positions

vs Mar 31, 2026

Institution	Previously Held	Last Value (USD)
Large RENAISSANCE TECHNOLOGIES LLC	541,721	$451,795
Micro Kingsbury Capital Investment Advisors LLC	313,877	$261,773
Small Pilgrim Partners Asia Pte Ltd	36,600	$30,524
Mega GOLDMAN SACHS GROUP INC	30,471	$25,412
Small TWO SIGMA SECURITIES, LLC	25,806	$21,522

Filter: New 15 Increased 13 Reduced 11 Sold out 18 Unchanged 19

Showing 64 of 64

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

Two Seas Capital LP

$4,754,037

22.33%

5,592,985

Old West Investment Management, LLC

$3,827,272

17.98%

4,502,674

CITADEL ADVISORS LLC

$3,431,178

16.12%

4,036,680

VANGUARD CAPITAL MANAGEMENT LLC

$2,035,363

9.56%

2,394,545

Jefferies Financial Group Inc.

$1,275,000

5.99%

1,500,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jefferies Financial Services, Inc.	1,500,000	$1,275,000	100.0%	Defined

MORGAN STANLEY

$1,175,056

5.52%

1,382,420

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MORGAN STANLEY INVESTMENT MANAGEMENT INC	1,376,466	$1,169,996	99.6%	Defined
MORGAN STANLEY SMITH BARNEY LLC	1,093	$929	0.1%	Defined
PARAMETRIC PORTFOLIO ASSOCIATES LLC	4,861	$4,131	0.4%	Defined

UBS Group AG

$1,021,237

4.80%

1,201,457

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS Financial Services Inc	1,909	$1,622	0.2%	Defined
UBS AG	1,184,548	$1,006,865	98.6%	Defined
UBS Switzerland AG	15,000	$12,750	1.2%	Defined

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$566,435

2.66%

666,396

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	634,268	$539,127	95.2%	Other
G1 EXECUTION SERVICES, LLC	32,128	$27,308	4.8%	Other

GEODE CAPITAL MANAGEMENT, LLC

$512,355

2.41%

602,772

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GEODE CAPITAL MANAGEMENT TRUST COMPANY, LLC	114,778	$97,561	19.0%	Defined
Held directly	487,994	$414,794	81.0%	Defined

BlackRock, Inc.

$389,969

1.83%

458,789

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BlackRock Investment Management, LLC	12,148	$10,325	2.6%	Sole
BlackRock Fund Advisors	181,176	$153,999	39.5%	Sole
BlackRock Institutional Trust Company, N.A.	265,465	$225,645	57.9%	Sole

VANGUARD FIDUCIARY TRUST CO

$254,621

1.20%

299,555

STATE STREET CORP

$195,340

0.92%

229,812

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
STATE STREET GLOBAL ADVISORS TRUST COMPANY	229,812	$195,340	100.0%	Defined

CITADEL ADVISORS LLC

$168,810

0.79%

198,600

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	198,600	$168,810	100.0%	Defined

XTX Topco Ltd

$146,067

0.69%

171,844

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
XTX EXECUTION SERVICES LLC joint	171,844	$146,067	100.0%	Defined

L. Roy Papp & Associates, LLP

$129,591

0.61%

152,461

GROUP ONE TRADING LLC

$126,172

0.59%

148,438

NORTHERN TRUST CORP

$104,925

0.49%

123,442

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
NORTHERN TRUST CO joint	123,442	$104,925	100.0%	Defined

Rockefeller Capital Management L.P.

$99,236

0.47%

116,749

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
ROCKEFELLER FINANCIAL LLC	116,749	$99,236	100.0%	Defined

VOISARD ASSET MANAGEMENT GROUP, INC.

$91,800

0.43%

108,000

Caprock Group, LLC

$89,369

0.42%

105,140

BlackDiamond Wealth Management, LLC

$85,000

0.40%

100,000

JANE STREET GROUP, LLC

$82,535

0.39%

97,100

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jane Street Capital, LLC	97,100	$82,535	100.0%	Defined

CITADEL ADVISORS LLC

$72,930

0.34%

85,800

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	85,800	$72,930	100.0%	Defined

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$68,425

0.32%

80,500

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	80,500	$68,425	100.0%	Other

TWO SIGMA INVESTMENTS, LP

$67,562

0.32%

79,485

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$66,385

0.31%

78,100

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	78,100	$66,385	100.0%	Other

JPMORGAN CHASE & CO

$61,752

0.29%

72,651

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
J.P. Morgan Securities LLC	18,576	$15,789	25.6%	Defined
J.P. Morgan Securities plc	54,075	$45,963	74.4%	Defined

BBR PARTNERS, LLC

$51,523

0.24%

60,616

JANE STREET GROUP, LLC

$46,860

0.22%

55,131

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jane Street Capital, LLC	55,130	$46,860	100.0%	Defined
Jane Street Global Trading, LLC	1	$0	0.0%	Defined

JANE STREET GROUP, LLC

$37,910

0.18%

44,600

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jane Street Capital, LLC	44,600	$37,910	100.0%	Defined

SIMPLEX TRADING, LLC

$26,438

0.12%

31,104

Foundations Investment Advisors, LLC

$24,012

0.11%

28,250

SLT Holdings LLC

$24,012

0.11%

28,250

Vanguard Global Advisers, LLC

$22,842

0.11%

26,873

Apollon Wealth Management, LLC

$19,249

0.09%

22,646

CARY STREET PARTNERS FINANCIAL LLC

$16,150

0.08%

19,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
CARY STREET PARTNERS INVESTMENT ADVISORY LLC	19,000	$16,150	100.0%	Defined

Concurrent Investment Advisors, LLC

$14,450

0.07%

17,000

TD Waterhouse Canada Inc.

$12,750

0.06%

15,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
TORONTO DOMINION BANK	15,000	$12,750	100.0%	Defined

LPL Financial LLC

$12,277

0.06%

14,444

Private Advisor Group, LLC

$11,595

0.05%

13,642

5th Street Advisors, LLC

$11,577

0.05%

13,621

Bay Colony Advisory Group, Inc d/b/a Bay Colony Advisors

$10,625

0.05%

12,500

Kestra Advisory Services, LLC

$8,998

0.04%

10,586

GenTrust, LLC

$8,821

0.04%

10,378

Tower Research Capital LLC (TRC)

$8,596

0.04%

10,113

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Latour Trading LLC (Latour)	10,113	$8,596	100.0%	Defined

Focus Partners Wealth

$8,500

0.04%

10,000

Continuum Advisory, LLC

$4,723

0.02%

5,557

Arax Advisory Partners

$3,400

0.02%

4,000

ACTION POINT FINANCIAL PLANNING, LLC

$2,198

0.01%

2,587

BARCLAYS PLC

$861

0.00%

1,013

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BARCLAYS CAPITAL INC.	1,013	$861	100.0%	Defined

Farther Finance Advisors, LLC

$850

0.00%

1,000

Avion Wealth

$743

0.00%

875

Integrated Wealth Concepts LLC

$595

0.00%

701

Global Retirement Partners, LLC

$484

0.00%

570

SBI Securities Co., Ltd.

$481

0.00%

567

BNP PARIBAS ARBITRAGE, SA

$461

0.00%

543

HARBOUR INVESTMENTS, INC.

$433

0.00%

510

ROYAL BANK OF CANADA

$425

0.00%

500

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
RBC Dominion Securities Inc.	500	$425	100.0%	Defined

Truvestments Capital LLC

$425

0.00%

500

OSAIC HOLDINGS, INC.

$42

0.00%

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
OSAIC WEALTH, INC.	50	$42	100.0%	Defined

Darwin Wealth Management, LLC

$35

0.00%

FINANCIAL CONSULATE, INC

0.00%

Caitong International Asset Management Co., Ltd

0.00%

WELLS FARGO & COMPANY/MN

0.00%

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
WELLS FARGO CLEARING SERVICES, LLC	1	$1	100.0%	Defined

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GOLDMAN SACHS & CO. LLC	30,471	$25,412	100.0%	Defined

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
US BANK NATIONAL ASSOCIATION	17	$14	100.0%	Defined

Key facts CIK 798528 CUSIP 676118201 13F (30d) 43 filings 43 filers Visit website