Tsakos Energy Navigation Limited
DE ˙ DB ˙ BMG9108L1735
31,48 € ↓ -0,40 (-1,25%)
2026-06-04
AKTIENPREIS
SecurityDE:TK41 / Tsakos Energy Navigation Limited
InstitutionFoundation Resource Management Inc
Latest Disclosed Ownership342,773 shares
Latest Disclosed Value $ 13,525,823
Foundation Resource Management Inc reports 1.71% decrease in ownership of TK41 / Tsakos Energy Navigation Limited

On April 21, 2026 - Foundation Resource Management Inc filed a 13F-HR form disclosing ownership of 342,773 shares of Tsakos Energy Navigation Limited (DE:TK41) valued at $11,825,668 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 22, 2026 disclosing 348,732 shares of Tsakos Energy Navigation Limited. This represents a change in shares of -1.71% during the quarter. The current value of the position is $10,790,494 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-04-21 2026-03-31 13F TSAKOS ENERGY NAVIGATION COM G9108L173 342,773 -5,959 -1.71 13,526 73.00 1.5223
2026-01-22 2025-12-31 13F TSAKOS ENERGY NAVIGATION COM G9108L173 348,732 -3,292 -0.94 7,819 -0.04 1.0460
2025-10-14 2025-09-30 13F TSAKOS ENERGY NAVIGATION COM G9108L173 352,024 2,443 0.70 7,822 16.59 1.1238
2025-07-14 2025-06-30 13F TSAKOS ENERGY NAVIGATION COM G9108L173 349,581 -2,851 -0.81 6,708 11.58 1.0374
2025-04-14 2025-03-31 13F TSAKOS ENERGY NAVIGATION COM G9108L173 352,432 -8,115 -2.25 6,012 -3.82 0.9478
2025-01-14 2024-12-31 13F TSAKOS ENERGY NAVIGATION COM G9108L173 360,547 -3,279 -0.90 6,252 -31.55 1.0442
2024-10-10 2024-09-30 13F TSAKOS ENERGY NAVIGATION COM G9108L173 363,826 -5,096 -1.38 9,132 -15.46 1.4117
2024-07-10 2024-06-30 13F TSAKOS ENERGY NAVIGATION COM G9108L173 368,922 -212 -0.06 10,802 15.26 1.7257
2024-04-11 2024-03-31 13F TSAKOS ENERGY NAVIGATION COM G9108L173 369,134 2,032 0.55 9,372 14.90 1.4722
2024-01-10 2023-12-31 13F TSAKOS ENERGY NAVIGATION COM G9108L173 367,102 58,451 18.94 8,157 27.19 1.2993
2023-10-10 2023-09-30 13F TSAKOS ENERGY NAVIGATION COM G9108L173 308,651 -7,027 -2.23 6,414 128,160.00 1.0646
2023-07-12 2023-06-30 13F TSAKOS ENERGY NAVIGATION COM G9108L173 315,678 -1,229 -0.39 6 -16.67 0.9368
2023-04-11 2023-03-31 13F TSAKOS ENERGY NAVIGATION COM G9108L173 316,907 -197 -0.06 6 20.00 1.0199
2023-01-12 2022-12-31 13F TSAKOS ENERGY NAVIGATION COM G9108L173 317,104 361 0.11 5 -99.90 0.8884
2022-10-13 2022-09-30 13F TSAKOS ENERGY NAVIGATION COM G9108L173 316,743 8,728 2.83 4,837 75.06 0.9196
2022-07-15 2022-06-30 13F TSAKOS ENERGY NAVIGATION COM G9108L173 308,015 3,446 1.13 2,763 3.21 0.4926
2022-04-12 2022-03-31 13F TSAKOS ENERGY NAVIGATION COM G9108L173 304,569 23,395 8.32 2,677 31.48 0.4130
2022-01-21 2021-12-31 13F/A-1 TSAKOS ENERGY NAVIGATION COM G9108L173 281,174 145,138 106.69 2,036 39.84 0.3959
2022-01-12 2021-12-31 13F TSAKOS ENERGY NAVIGATION COM G9108L173 562,348 426,312 4,071 0.3959
2021-10-12 2021-09-30 13F TSAKOS ENERGY NAVIGATION COM G9108L173 136,036 13,629 11.13 1,456 38.27 0.3284
2021-07-13 2021-06-30 13F TSAKOS ENERGY NAVIGATION COM G9108L173 122,407 13,705 12.61 1,053 2.33 0.2364
2021-04-08 2021-03-31 13F TSAKOS ENERGY NAVIGATION COM G9108L173 108,702 13,832 14.58 1,029 35.04 0.2449
2021-01-13 2020-12-31 13F TSAKOS ENERGY NAVIGATION COM G9108L173 94,870 996 1.06 762 2.56 0.1988
2020-10-07 2020-09-30 13F TSAKOS ENERGY NAVIGATION COM G9108L173 93,874 93,874 743 0.2267
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.