On December $31,$ Mars Company had the following portfolio of stock investments with insignificant influence. Mars had no stock investments in prior periods.

Stock Investments Cost Fair Value

Apple stock $ $6,500$                         $ $9,700$

Chipotle stock $4,400\mathrm{ \; \; \; \; \; \; \; \; \; \; \; \; \; \; 2},600$

Under Armour stock $12,900\mathrm{ \; \; \; \; \; 1}2,200$

Prepare the December $31$ adjusting entry to report these investments at fair value.