Some of Powderhorn Corporation’s investment securities are classified as trading securities and some are classified as available for sale.The cost and market value of each category at December 31, 2011, are shown on the next page.

Cost

Fair Value

Unrealized Gain (Loss)

Trading securities

$93,600

$94,900

$1,300

Available for sale securities

$48,800

$51,400

$2,600

At December 31, 2010, the Market Adjustment—Trading account had a debit balance of $9,200, and the Market Adjustment—Available for Sale account had a credit balance of $5,750. Prepare the required journal entries for each group of securities for December 31, 2011.