Odyssey Marine Exploration, Inc.
DE ˙ DB ˙ US6761182012
0,84 € ↓ -0,09 (-9,31%)
2026-06-05
DEL PRIS
SecurityDE:OYM1 / Odyssey Marine Exploration, Inc.
InstitutionVanguard Group Inc
Latest Disclosed Ownership868,585 shares
Latest Disclosed Value $ 1,702,427
Vanguard Group Inc reports 35.64% increase in ownership of OYM1 / Odyssey Marine Exploration, Inc.

On January 29, 2026 - Vanguard Group Inc filed a 13F-HR form disclosing ownership of 868,585 shares of Odyssey Marine Exploration, Inc. (DE:OYM1) valued at $1,502,652 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 7, 2025 disclosing 640,364 shares of Odyssey Marine Exploration, Inc.. This represents a change in shares of 35.64% during the quarter. The current value of the position is $727,874 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-01-29 2025-12-31 13F ODYSSEY MARINE EXPL COM NEW 676118201 868,585 228,221 35.64 1,702 36.38 0.0000
2025-11-07 2025-09-30 13F ODYSSEY MARINE EXPL COM NEW 676118201 640,364 179,067 38.82 1,249 129.41 0.0000
2025-08-11 2025-06-30 13F ODYSSEY MARINE EXPL COM NEW 676118201 461,297 202,850 78.49 544 428.16 0.0000
2025-05-09 2025-03-31 13F ODYSSEY MARINE EXPL COM NEW 676118201 258,447 0 0.00 104 -44.62 0.0000
2025-02-11 2024-12-31 13F ODYSSEY MARINE EXPL COM NEW 676118201 258,447 -603,884 -70.03 186 -73.95 0.0000
2024-11-13 2024-09-30 13F ODYSSEY MARINE EXPL COM NEW 676118201 862,331 6,958 0.81 714 -82.89 0.0000
2024-08-13 2024-06-30 13F ODYSSEY MARINE EXPL COM NEW 676118201 855,373 18,868 2.26 4,174 30.97 0.0001
2024-05-10 2024-03-31 13F ODYSSEY MARINE EXPL COM NEW 676118201 836,505 235,334 39.15 3,187 14.03 0.0001
2024-03-11 2023-12-31 13F/A-1 ODYSSEY MARINE EXPL COM NEW 676118201 601,171 42,632 7.63 2,795 33.86 0.0001
2024-02-14 2023-12-31 13F ODYSSEY MARINE EXPL COM NEW 676118201 601,171 42,632 2,795 0.0001
2023-12-18 2023-09-30 13F/A-1 ODYSSEY MARINE EXPL COM NEW 676118201 558,539 40,927 7.91 2,089 12.08 0.0001
2023-11-14 2023-09-30 13F ODYSSEY MARINE EXPL COM NEW 676118201 558,539 40,927 2,089 0.0000
2023-08-14 2023-06-30 13F ODYSSEY MARINE EXPL COM NEW 676118201 517,612 79,960 18.27 1,863 31.01 0.0000
2023-07-14 2023-03-31 13F/A-1 ODYSSEY MARINE EXPL COM NEW 676118201 437,652 44,739 11.39 1,422 -6.69 0.0000
2023-05-15 2023-03-31 13F ODYSSEY MARINE EXPL COM NEW 676118201 437,652 44,739 1,422 0.0000
2023-02-10 2022-12-31 13F ODYSSEY MARINE EXPL COM NEW 676118201 392,913 9,754 2.55 1,525 28.28 0.0000
2022-11-14 2022-09-30 13F ODYSSEY MARINE EXPL COM NEW 676118201 383,159 0 0.00 1,188 -9.10 0.0000
2022-08-12 2022-06-30 13F ODYSSEY MARINE EXPL COM NEW 676118201 383,159 162,195 73.40 1,307 -11.15 0.0000
2022-05-13 2022-03-31 13F ODYSSEY MARINE EXPL COM NEW 676118201 220,964 -117,748 -34.76 1,471 -16.52 0.0000
2022-02-14 2021-12-31 13F ODYSSEY MARINE EXPL COM NEW 676118201 338,712 48,465 16.70 1,762 -13.29 0.0000
2021-11-12 2021-09-30 13F ODYSSEY MARINE EXPL COM NEW 676118201 290,247 0 0.00 2,032 10.08 0.0001
2021-08-13 2021-06-30 13F ODYSSEY MARINE EXPL COM NEW 676118201 290,247 25,399 9.59 1,846 4.35 0.0000
2021-05-14 2021-03-31 13F ODYSSEY MARINE EXPL COM NEW 676118201 264,848 26 0.01 1,769 -5.90 0.0000
2021-02-12 2020-12-31 13F ODYSSEY MARINE EXPL COM NEW 676118201 264,822 -6 -0.00 1,880 4.39 0.0001
2020-11-16 2020-09-30 13F ODYSSEY MARINE EXPLORATION I COM NEW 676118201 264,828 0 0.00 1,801 48.72 0.0001
2020-08-14 2020-06-30 13F ODYSSEY MARINE EXPLORATION I COM NEW 676118201 264,828 0 0.00 1,211 36.53 0.0000
2020-05-15 2020-03-31 13F ODYSSEY MARINE EXPLORATION I COM NEW 676118201 264,828 0 0.00 887 5.09 0.0000
2020-02-14 2019-12-31 13F ODYSSEY MARINE EXPLORATION I COM NEW 676118201 264,828 0 0.00 844 -16.85 0.0000
2019-11-14 2019-09-30 13F ODYSSEY MARINE EXPLORATION I COM NEW 676118201 264,828 -2,296 -0.86 1,015 -34.47 0.0000
2019-08-14 2019-06-30 13F ODYSSEY MARINE EXPLORATION COM NEW 676118201 267,124 -6,913 -2.52 1,549 -21.05 0.0001
2019-05-15 2019-03-31 13F ODYSSEY MARINE EXPLORATION I COM NEW 676118201 274,037 10,458 3.97 1,962 123.46 0.0001
2019-02-14 2018-12-31 13F ODYSSEY MARINE EXPLORATION COM NEW 676118201 263,579 9,134 3.59 878 -57.40 0.0000
2018-12-13 2018-09-30 13F/A-2 ODYSSEY MARINE EXPLORATION I COM NEW 676118201 254,445 34,793 15.84 2,061 13.18 0.0001
2018-11-23 2018-09-30 13F/A-1 ODYSSEY MARINE EXPLORATION I COM NEW 676118201 254,445 0 2,061 0.0001
2018-11-14 2018-09-30 13F ODYSSEY MARINE EXPLORATION I COM NEW 676118201 254,445 34,793 2,061
2018-08-14 2018-06-30 13F ODYSSEY MARINE EXPLORATION I COM NEW 676118201 219,652 39,562 21.97 1,821 22.30 0.0001
2018-05-15 2018-03-31 13F ODYSSEY MARINE EXPLORATION I COM NEW 676118201 180,090 50,855 39.35 1,489 204.50 0.0001
2018-02-14 2017-12-31 13F ODYSSEY MARINE EXPLORATION I COM NEW 676118201 129,235 -19,276 -12.98 489 -23.47 0.0000
2017-11-14 2017-09-30 13F ODYSSEY MARINE EXPLORATION I COM NEW 676118201 148,511 -35,581 -19.33 639 -3.77 0.0000
2017-08-24 2017-06-30 13F/A-1 ODYSSEY MARINE EXPLORATION I COM NEW 676118201 184,092 -12,783 -6.49 664 -14.43 0.0000
2017-08-11 2017-06-30 13F ODYSSEY MARINE EXPLORATION I COM NEW 676118201 184,092 -12,783 664
2017-05-12 2017-03-31 13F ODYSSEY MARINE EXPLORATION I COM NEW 676118201 196,875 9,557 5.10 776 21.06 0.0000
2017-02-14 2016-12-31 13F ODYSSEY MARINE EXPLORATION I COM NEW 676118201 187,318 13,099 7.52 641 5.43 0.0000
2016-11-14 2016-09-30 13F ODYSSEY MARINE EXPLORATION I COM NEW 676118201 174,219 -48,568 -21.80 608 34.81 0.0000
2016-08-10 2016-06-30 13F ODYSSEY MARINE EXPLORATION I COM NEW 676118201 222,787 1,971 0.89 451 -69.91 0.0000
2016-05-13 2016-03-31 13F ODYSSEY MARINE EXPLORATION I COM NEW 676118201 220,816 220,816 1,499 0.0001
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.