Kobuk Valley Co$.$ purchased several investments in debt securities during $2023,$ its first year of operations. The following information pertains to these securities$.$ The fluctuations in their fair values are not considered permanent. Calculate the total unrealized holding gain Kobuk Valley Co$.$ would report in its $2024$ income statement relative to its investments in bonds.

$\backslash$table$[[$Held$-$to$-$Maturity Securities:,Fair Value $12/31/2023,$Fair Value $12/31/2024,\backslash$table$[[$Amortized Cost$],[\frac{12}{31}\frac{?}{2023}$