Martinez Corporation, a Canadian-based international company that follows IFRS 9, has the following securities in its portfolio of investments acquired for trading purposes and accounted for using the FV-NI method on December 31, 2016:

Investments		Carrying Amount (before adjustment)				Fair Value
2,000 shares of David Jones Inc., common			$99,000			$94,900
4,300 shares of Hearn Corp., common			150,500			146,400
420 shares of Alessandro Inc., preferred			67,200			69,700
			$316,700			$311,000

In 2017, Martinez completed the following securities transactions:

Mar. 1		Sold the 2,000 shares of David Jones Inc. common at $41.11 per share, less fees of $500.
Apr. 1		Bought 900 shares of Oberto Ltd. common at $79 per share, plus fees of $1,300.

Martinez Corporations portfolio of trading securities appeared as follows on December 31, 2017:

Investments		Original Cost			Fair Value
4,300 shares of Hearn Corp., common		$150,500			$147,900
900 shares of Oberto Ltd., common		71,100			68,900
420 shares of Alessandro Inc., preferred		67,200			64,700
		$288,800			$281,500

Prepare the Martinez Corporation general journal entry to record the adjusting entry for December 31, 2016.

Prepare the Martinez Corporation general journal entry to record the sale of the David Jones Inc. shares.

Prepare the Martinez Corporation general journal entry to record the purchase of the Oberto Ltd. shares.

Prepare the Martinez Corporation general journal entry to record the adjusting entry for December 31, 2017.