As of

September 30, 2025

December 31, 2024

Fair value of investment in marketable securities at the beginning of period / year

$

13,737

$

20,171

Unrealized holding gain (loss)

3,165

(5,018

)

Transfer to non-marketable securities

-

(1,500

)

Exchange rate effect

(24

)

84

Fair value of investment in marketable securities at the end of period / year

$

16,878

$

13,737