Vault-13

ODYSSEY MARINE EXPL INC OMEX

COM NEW · Common Stock · CUSIP 676118201

46 institutional holders +3 vs Q1 2025
4,051,1444.1m shares reported held*
9.0% of all shares outstanding*
$4.8mreported value*
10 new 13 added 6 reduced 8 sold out net sold ≈ $489.7k (-415.0k shares)

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable. Shares outstanding: 45.2m as of 2025-08-14, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $1.18. Options: 7 managers hold calls ($846.0k notional), 7 hold puts ($553.3k).

Trends to Q2 2025

Institutional holders

Managers reporting a position, each quarter

0204060Q3 22: 41Q4 22: 41Q1 23: 45Q2 23: 37Q3 23: 42Q4 23: 40Q1 24: 43Q2 24: 48Q3 24: 39Q4 24: 40Q1 25: 43Q2 25: 4646Q3 22Q2 23Q1 24Q4 24Q2 25
Numbers
QuarterHolders
Q3 202241
Q4 202241
Q1 202345
Q2 202337
Q3 202342
Q4 202340
Q1 202443
Q2 202448
Q3 202439
Q4 202440
Q1 202543
Q2 202546

Buyers vs sellers

Managers adding to or starting a position, vs cutting or selling out

Bought or addedCut or sold out
40040Q3 23: 17 bought or addedQ3 23: 6 cut or sold outQ4 23: 16 bought or addedQ4 23: 13 cut or sold outQ4 23Q1 24: 14 bought or addedQ1 24: 13 cut or sold outQ2 24: 21 bought or addedQ2 24: 10 cut or sold outQ2 24Q3 24: 18 bought or addedQ3 24: 25 cut or sold outQ4 24: 13 bought or addedQ4 24: 22 cut or sold outQ4 24Q1 25: 16 bought or addedQ1 25: 10 cut or sold outQ2 25: 23 bought or addedQ2 25: 14 cut or sold outQ2 25
Numbers
QuarterBought or addedCut or sold out
Q3 2023176
Q4 20231613
Q1 20241413
Q2 20242110
Q3 20241825
Q4 20241322
Q1 20251610
Q2 20252314

Calls vs puts

Options held, notional value, last 4 quarters. P/C = puts ÷ calls

CallsPuts
$0$250k$500k$750k$1mQ3 24 calls: $804.5kQ3 24 puts: $850.8kQ3 24P/C 1.06Q4 24 calls: $283.7kQ4 24 puts: $169.5kQ4 24P/C 0.60Q1 25 calls: $249.2kQ1 25 puts: $45.1kQ1 25P/C 0.18Q2 25 calls: $846.0kQ2 25 puts: $553.3kQ2 25P/C 0.65
Numbers
QuarterCallsPutsP/C
Q3 2024$804.5k$850.8k1.06
Q4 2024$283.7k$169.5k0.60
Q1 2025$249.2k$45.1k0.18
Q2 2025$846.0k$553.3k0.65

Biggest buyers

SUSQUEHANNA INTERNATIONAL GROUP, LLP New +666,921+666.9k
VANGUARD GROUP INC Added +202,850+202.8k
GOLDMAN SACHS GROUP INC New +90,071+90.1k
SIMPLEX TRADING, LLC New +58,477+58.5k
STATE STREET CORP Added +55,600+55.6k
JANE STREET GROUP, LLC Added +41,974+42.0k
BlackRock, Inc. Added +23,874+23.9k
VOISARD ASSET MANAGEMENT GROUP, INC. Added +13,000+13.0k
WOLVERINE TRADING, LLC New +12,992+13.0k
XTX Topco Ltd New +11,431+11.4k

Biggest sellers

Two Seas Capital LP Reduced -1,118,280-1.1m
Kestra Advisory Services, LLC Sold out -267,506-267.5k
UBS Group AG Reduced -160,987-161.0k
FIFTH LANE CAPITAL, LP Sold out -20,000-20.0k
TWO SIGMA SECURITIES, LLC Sold out -18,439-18.4k
Suncoast Equity Management Sold out -15,000-15.0k
Vanguard Personalized Indexing Management, LLC Sold out -11,143-11.1k
Stonegate Investment Group, LLC Reduced -10,000-10.0k
QUADRANT CAPITAL GROUP LLC Sold out -2,970-3.0k
SMITHBRIDGE ASSET MANAGEMENT INC/DE Reduced -2,378-2.4k

Biggest calls

CITADEL ADVISORS LLC Added $312.1k264.5k shares
GROUP ONE TRADING LLC Added $149.5k126.7k shares
SIMPLEX TRADING, LLC Added $135.0k115.1k shares
SUSQUEHANNA INTERNATIONAL GROUP, LLP Reduced $129.3k109.6k shares
JANE STREET GROUP, LLC New $89.2k75.6k shares
WOLVERINE TRADING, LLC New $30.8k27.5k shares
CONCOURSE FINANCIAL GROUP SECURITIES, INC. Unchanged $00 shares

Biggest puts

CITADEL ADVISORS LLC Added $171.8k145.6k shares
SUSQUEHANNA INTERNATIONAL GROUP, LLP Added $136.3k115.5k shares
GROUP ONE TRADING LLC Added $127.8k108.3k shares
JANE STREET GROUP, LLC New $80.2k68.0k shares
SIMPLEX TRADING, LLC Added $26.0k22.3k shares
NATIONAL BANK OF CANADA /FI/ New $11.2k95 shares
CONCOURSE FINANCIAL GROUP SECURITIES, INC. Unchanged $00 shares

Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.

Major shareholders (over 5%)

Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.

HolderStakeChangeShares Last filed
Capital Latinoamericano, S.A. de C.V. 13G · passive investor +3.1 pts · filed 2025-07-31 11.6% +3.1 pts 3.9m≈ $3.3m 2025-07-31
Greywolf Capital Management LP 13G · passive investor +0.9 pts · filed 2026-03-04 10.9% +0.9 pts 6.4m≈ $5.4m 2026-03-04
Two Seas Capital LP 13D · may seek influence no change · filed 2026-04-13
Stated purposeThe Reporting Persons acquired the securities reported herein for investment purposes in the ordinary course of business. The Reporting Persons acquired such securities because they believed that such securities, when purchased, represented an attractive investment opportunity. On April 8, 2026, the Issuer, Oceanus Merger Sub, Inc., a Delaware corporation and wholly owned subsidiary of the Issuer ("Merger Sub"), and American Ocean Minerals Corporation, a Delaware corporation ("AOM,") entered into an Agreement and Plan of Merger (the "Merger Agreement") pursuant to which Merger Sub will merge with and into AOM, with AOM surviving the merger and becoming a direct, wholly owned subsidiary of Odyssey (the "Merger"). In connection with the Merger Agreement, on April 8, 2026, the Issuer, AOM an… Full filing
10.0% no change 5.9m≈ $5.0m 2026-04-13
Old West Investment Management, LLC 13G · institution new · filed 2026-05-12 8.2% new 4.8m≈ $4.1m 2026-05-12

Fell to 5% or below in the last year: Brumder William George (0.2%, 2026-04-21), FourWorld Capital Management LLC (0.8%, 2026-02-17)

Insider purchases and sales in Q2 2025

Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.

Officers and directors buying vs selling

Number of people, by quarter (10% owners not included)

BuyingSelling
101Q3 23: 0 buyingQ3 23: 0 sellingQ4 23: 0 buyingQ4 23: 0 sellingQ4 23Q1 24: 0 buyingQ1 24: 0 sellingQ2 24: 0 buyingQ2 24: 0 sellingQ2 24Q3 24: 0 buyingQ3 24: 0 sellingQ4 24: 1 buyingQ4 24: 0 sellingQ4 24Q1 25: 0 buyingQ1 25: 0 sellingQ2 25: 0 buyingQ2 25: 0 sellingQ2 25
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q3 20230—0——
Q4 20230—0——
Q1 20240—0——
Q2 20240—0——
Q3 20240—0——
Q4 20241$169.5k0——
Q1 20250—0——
Q2 20250—0——

None reported in Q2 2025.

Holders, Q2 2025

#ManagerLocationShares Value% of their portfolioChangeShares change
1 Two Seas Capital LP 0.17% of their portfolio RYE, NY 1,430,7691.4m $1.7m $1.7m 0.17% Reduced -1.1m -1,118,280
2 SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio BALA CYNWYD, PA 666,921666.9k $787.0k $787.0k 0.00% New
3 VANGUARD GROUP INC 0.00% of their portfolio Valley Forge, PA 461,297461.3k $544.3k $544.3k 0.00% Added +202.8k +202,850
4 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 305,373305.4k $360.4k $360.4k 0.00% Added +1.2k +1,237
5 BlackRock, Inc. 0.00% of their portfolio New York, NY 251,440251.4k $296.7k $296.7k 0.00% Added +23.9k +23,874
6 L. Roy Papp & Associates, LLP 0.02% of their portfolio Phoenix, AZ 152,461152.5k $179.9k $179.9k 0.02% Unchanged
7 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 117,583117.6k $138.7k $138.7k 0.00% Added +55.6k +55,600
8 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 90,07190.1k $106.3k $106.3k 0.00% New
9 GROUP ONE TRADING LLC 0.00% of their portfolio CHICAGO, IL 77,37077.4k $91.3k $91.3k 0.00% Added +3.8k +3,811
10 Stonegate Investment Group, LLC 0.00% of their portfolio BIRMINGHAM, AL 74,06674.1k $87.4k $87.4k 0.00% Reduced -10.0k -10,000
11 JANE STREET GROUP, LLC 0.00% of their portfolio NEW YORK, NY 69,29769.3k $81.8k $81.8k 0.00% Added +42.0k +41,974
12 SIMPLEX TRADING, LLC 0.00% of their portfolio CHICAGO, IL 58,47758.5k $69.0k $69.0k 0.00% New
13 NORTHERN TRUST CORP 0.00% of their portfolio CHICAGO, IL 37,86537.9k $44.7k $44.7k 0.00% Unchanged
14 TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio NEW YORK, NY 36,88436.9k $43.5k $43.5k 0.00% Unchanged
15 VOISARD ASSET MANAGEMENT GROUP, INC. 0.01% of their portfolio Grand Rapids, MI 35,00035.0k $41.3k $41.3k 0.01% Added +13.0k +13,000
16 Apollon Wealth Management, LLC 0.00% of their portfolio MOUNT PLEASANT, SC 21,64621.6k $25.5k $25.5k 0.00% Unchanged
17 CARY STREET PARTNERS FINANCIAL LLC 0.00% of their portfolio RICHMOND, VA 19,00019.0k $22.4k $22.4k 0.00% Unchanged
18 ARS Wealth Advisors Group, LLC 0.00% of their portfolio St. Petersburg, FL 17,73017.7k $20.9k $20.9k 0.00% Unchanged
19 Concurrent Investment Advisors, LLC 0.00% of their portfolio Tampa, FL 17,00017.0k $20.1k $20.1k 0.00% Unchanged
20 5th Street Advisors, LLC 0.01% of their portfolio Southport, CT 13,62113.6k $16.1k $16.1k 0.01% Unchanged
21 SMITHBRIDGE ASSET MANAGEMENT INC/DE 0.00% of their portfolio Chadds Ford, PA 13,02213.0k $15.4k $15.4k 0.00% Reduced -2.4k -2,378
22 WOLVERINE TRADING, LLC 0.00% of their portfolio CHICAGO, IL 12,99213.0k $14.6k $14.6k 0.00% New
23 XTX Topco Ltd 0.00% of their portfolio LONDON, X0 11,43111.4k $13.5k $13.5k 0.00% New
24 GenTrust, LLC 0.00% of their portfolio MIAMI, FL 10,37810.4k $12.2k $12.2k 0.00% Unchanged
25 Cetera Investment Advisers 0.00% of their portfolio SCHAUMBURG, IL 10,10010.1k $11.9k $11.9k 0.00% Unchanged
26 Northwest Financial Advisors 0.02% of their portfolio HERNDON, VA 10,07410.1k $11.9k $11.9k 0.02% New
27 NATIONAL BANK OF CANADA /FI/ 0.00% of their portfolio MONTREAL, A8 9,3009.3k $11.0k $11.0k 0.00% New
28 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 4,1914.2k $4.9k $4.9k 0.00% Added +2.0k +2,011
29 MAI Capital Management 0.00% of their portfolio INDEPENDENCE, OH 3,0753.1k $3.6k $3.6k 0.00% Added +3.0k +2,970
30 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 2,6082.6k $3.1k $3.1k 0.00% Added +68 +68
31 OSAIC HOLDINGS, INC. 0.00% of their portfolio SCOTTSDALE, AZ 2,5832.6k $3.0k $3.0k 0.00% Added +2.5k +2,500
32 UBS Group AG 0.00% of their portfolio ZURICH, V8 2,4682.5k $2.9k $2.9k 0.00% Reduced -161.0k -160,987
33 TOTAL INVESTMENT MANAGEMENT INC 0.00% of their portfolio SCOTTSDALE, AZ 1,0001.0k $1.2k $1.2k 0.00% New
34 Avion Wealth 0.00% of their portfolio THE WOODLANDS, TX 875875 $1.0k $1.0k 0.00% Reduced -553 -553
35 CITIGROUP INC 0.00% of their portfolio NEW YORK, NY 851851 $1.0k $1.0k 0.00% New
36 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 794794 $0 $0 0.00% Added +773 +773
37 Global Retirement Partners, LLC 0.00% of their portfolio San Rafael, CA 570570 $673 $673 0.00% First filing
38 RAYMOND JAMES FINANCIAL INC 0.00% of their portfolio ST. PETERSBURG, FL 521521 $615 $615 0.00% New
39 Allworth Financial LP 0.00% of their portfolio FOLSOM, CA 292292 $345 $345 0.00% Unchanged
40 NewEdge Advisors, LLC 0.00% of their portfolio NEW ORLEANS, LA 8484 $99 $99 0.00% Unchanged
41 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 2626 $31 $31 0.00% Added +25 +25
42 SBI Securities Co., Ltd. 0.00% of their portfolio TOKYO, M0 1616 $19 $19 0.00% Unchanged
43 Parkside Financial Bank & Trust 0.00% of their portfolio SAINT LOUIS, MO 1010 $12 $12 0.00% Unchanged
44 Silicon Valley Capital Partners 0.00% of their portfolio SAN JOSE, CA 99 $11 $11 0.00% Unchanged
45 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 33 $4 $4 0.00% Reduced -54 -54
46 CONCOURSE FINANCIAL GROUP SECURITIES, INC. — of their portfolio BIRMINGHAM, AL 00 $0 $0 — Unchanged