Investment in marketable securities at December 31, 2011 and March 31, 2012 were $100.4 million and $122.6 million, respectively. These investments are comprised of the Company's investments in Value Partners Group Limited ("Value Partners"), a publicly-traded asset management firm based in Hong Kong, and investments held by Affiliates.

The following is a summary of the cost, gross unrealized gains and losses and fair value of investments classified as available-for-sale at December 31, 2011 and March 31, 2012:

			Gross Unrealized

			Gross Unrealized					Fair Value
	Cost		Gains		Losses			Fair Value
Equity securities	$	97.6	$	1.4	$	(12.7	)	$	86.3

			Gross Unrealized

	Cost		Gains		Losses			Fair Value
Equity securities	$	92.1	$	12.0	$	(2.6	)	$	101.5

As of March 31, 2012, the Company has invested $83.3 million in Value Partners, representing 7.8% of the outstanding common stock.

The following is a summary of the Company's realized gains and losses on investments classified as available-for-sale:

	For the Three Months Ended March 31,

	2011		2012
Gains	$	0.2	$	—
Losses		—		—

Net realized gains	$	0.2	$	—

The following is a summary of the cost, gross unrealized gains and losses and fair value of investments classified as trading securities at December 31, 2011 and March 31, 2012:

			Gross Unrealized

			Gross Unrealized					Fair Value
	Cost		Gains		Losses			Fair Value
Equity securities	$	13.5	$	0.9	$	(0.3	)	$	14.1

			Gross Unrealized

			Gross Unrealized				Fair Value
	Cost		Gains		Losses		Fair Value
Equity securities	$	9.6	$	11.5	$	—	$	21.1

The following is a summary of the Company's realized gains and losses on investments classified as trading securities:

	For the Three Months Ended March 31,

	2011			2012
Gains	$	0.2		$	0.5
Losses		(0.3	)		(0.3	)

Net realized gains (losses)	$	(0.1	)	$	0.2

As of December 31, 2011 and March 31, 2012, the Company has $14.6 million in cost method investments. These investments are recorded in Other assets.

Other investments consist of investments in funds advised by Affiliates. As of December 31, 2011 and March 31, 2012, the Company's other investments were $145.3 million and $157.0 million, respectively. These assets are reported within Prepaid expenses and other current assets ($31.2 million and $37.4 million at December 31, 2011 and March 31, 2012, respectively) and Other assets ($114.1 million and $119.6 million at December 31, 2011 and March 31, 2012, respectively) in the Consolidated Balance Sheets. The income or loss related to these investments is classified within Investment and other income in the Consolidated Statements of Income.