Tsakos Energy Navigation Limited
DE ˙ DB ˙ BMG9108L1735
31,48 € ↓ -0,40 (-1,25%)
2026-06-04
DEL PRIS
SecurityDE:TK41 / Tsakos Energy Navigation Limited
InstitutionRenaissance Technologies Llc
ManagerJames Simons
Latest Disclosed Ownership466,225 shares
Latest Disclosed Value $ 18,397,238
Renaissance Technologies Llc reports 15.18% increase in ownership of TK41 / Tsakos Energy Navigation Limited

On May 14, 2026 - Renaissance Technologies Llc filed a 13F-HR form disclosing ownership of 466,225 shares of Tsakos Energy Navigation Limited (DE:TK41) valued at $16,084,762 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 404,797 shares of Tsakos Energy Navigation Limited. This represents a change in shares of 15.18% during the quarter. The current value of the position is $14,676,763 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)
2026-05-14 2026-03-31 13F TSAKOS ENERGY NAVIGATION SHS G9108L173 466,225 61,428 15.18 18,397 102.72 0.0288
2026-02-12 2025-12-31 13F TSAKOS ENERGY NAVIGATION SHS G9108L173 404,797 8,217 2.07 9,076 2.98 0.0141
2025-11-13 2025-09-30 13F TSAKOS ENERGY NAVIGATION SHS G9108L173 396,580 -163,465 -29.19 8,812 -18.01 0.0116
2025-08-13 2025-06-30 13F TSAKOS ENERGY NAVIGATION SHS G9108L173 560,045 203,065 56.88 10,747 76.47 0.0143
2025-05-14 2025-03-31 13F TSAKOS ENERGY NAVIGATION SHS G9108L173 356,980 -181,500 -33.71 6,090 -34.78 0.0092
2025-02-13 2024-12-31 13F TSAKOS ENERGY NAVIGATION SHS G9108L173 538,480 37,460 7.48 9,337 -25.75 0.0138
2024-11-13 2024-09-30 13F TSAKOS ENERGY NAVIGATION SHS G9108L173 501,020 -43,960 -8.07 12,576 -21.19 0.0189
2024-08-09 2024-06-30 13F TSAKOS ENERGY NAVIGATION SHS G9108L173 544,980 58,900 12.12 15,957 132,875.00 0.0271
2024-05-13 2024-03-31 13F TSAKOS ENERGY NAVIGATION SHS G9108L173 486,080 19,400 4.16 12 20.00 0.0194
2024-02-13 2023-12-31 13F TSAKOS ENERGY NAVIGATION SHS G9108L173 466,680 14,600 3.23 10 11.11 0.0161
2023-11-14 2023-09-30 13F TSAKOS ENERGY NAVIGATION SHS G9108L173 452,080 86,100 23.53 9 50.00 0.0160
2023-08-11 2023-06-30 13F TSAKOS ENERGY NAVIGATION SHS G9108L173 365,980 23,400 6.83 7 0.00 0.0094
2023-05-12 2023-03-31 13F TSAKOS ENERGY NAVIGATION SHS G9108L173 342,580 100,000 41.22 7 50.00 0.0088
2023-02-13 2022-12-31 13F TSAKOS ENERGY NAVIGATION SHS G9108L173 242,580 32,300 15.36 4 -99.88 0.0056
2022-11-14 2022-09-30 13F TSAKOS ENERGY NAVIGATION SHS G9108L173 210,280 8,100 4.01 3,211 77.01 0.0045
2022-08-12 2022-06-30 13F TSAKOS ENERGY NAVIGATION SHS G9108L173 202,180 12,902 6.82 1,814 9.01 0.0021
2022-05-13 2022-03-31 13F TSAKOS ENERGY NAVIGATION SHS G9108L173 189,278 13,698 7.80 1,664 30.92 0.0020
2022-02-11 2021-12-31 13F TSAKOS ENERGY NAVIGATION SHS G9108L173 175,580 -26,800 -13.24 1,271 -41.29 0.0016
2021-11-12 2021-09-30 13F TSAKOS ENERGY NAVIGATION SHS G9108L173 202,380 -153,215 -43.09 2,165 -29.20 0.0028
2021-08-13 2021-06-30 13F TSAKOS ENERGY NAVIGATION SHS G9108L173 355,595 44,375 14.26 3,058 3.77 0.0038
2021-05-13 2021-03-31 13F TSAKOS ENERGY NAVIGATION SHS G9108L173 311,220 39,350 14.47 2,947 35.00 0.0037
2021-02-10 2020-12-31 13F TSAKOS ENERGY NAVIGATION SHS G9108L173 271,870 -76,890 -22.05 2,183 -20.96 0.0024
2020-11-13 2020-09-30 13F TSAKOS ENERGY NAVIGATION SHS G9108L173 348,760 348,760 2,762 0.0028
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.