Valuing Trading Securities at Fair Value On January 1, 2012, Valuation Allowance for Trading Investments had a credit balance of $7,300. On December 31, 2012, the cost of the trading securities portfolio was $43,900, and the fair value was $45,000. Prepare the December 31, 2012, adjusting journal entry to record the unrealized gain or loss on trading investments. 2012 Dec. 31