Earnings Per Share

6 Months Ended

Jun. 30, 2020

Note 12. Earnings Per Share

Basic earnings per share is computed under the two-class method by dividing income available to Class A common stockholders by the weighted average number of Class A common shares outstanding during the period. Unvested restricted share-based awards are excluded from the number of Class A common shares outstanding for the basic earnings per share calculation because the shares have not yet been earned by employees. Income available to Class A common stockholders is computed by reducing net income attributable to APAM by earnings (both distributed and undistributed) allocated to participating securities, according to their respective rights to participate in those earnings. Unvested share-based awards are participating securities because the awards include non-forfeitable dividend rights during the vesting period. Class B and Class C common shares do not share in profits of APAM and therefore are not reflected in the calculations.

The computation of basic and diluted earnings per share under the two-class method for the three and six months ended June 30, 2020 and 2019 were as follows:


	For the Three Months Ended June 30,						For the Six Months Ended June 30,
Basic and Diluted Earnings Per Share	2020		2019		2020		2019
Numerator:
Net income attributable to APAM	$	46,151	$	39,188	$	80,976	$	70,727
Less: Allocation to participating securities	6,001		5,340		12,155		12,524
Net income available to common stockholders	$	40,150	$	33,848	$	68,821	$	58,203
Denominator:
Weighted average shares outstanding	55,884,366		51,242,911		54,574,923		50,697,329
Earnings per share	$	0.72	$	0.66	$	1.26	$	1.15

Allocation to participating securities in the table above primarily represents dividends paid to holders of unvested restricted share-based awards, which reduces net income available to common stockholders.

There were no dilutive securities outstanding during the three and six months ended June 30, 2020 and 2019. The Holdings limited partnership units are anti-dilutive primarily due to the impact of public company expenses. Unvested restricted share-based awards are considered participating securities and are therefore anti-dilutive. The following table summarizes the weighted-average shares outstanding that are excluded from the calculation of diluted earnings per share because their effect would have been anti-dilutive:


	For the Three Months Ended June 30,			For the Six Months Ended June 30,
Anti-Dilutive Weighted Average Shares Outstanding	2020	2019	2020	2019
Holdings limited partnership units	17,692,268	21,707,968	18,880,709	22,143,682
Unvested restricted share-based awards	5,402,581	5,162,101	5,290,103	5,019,710
Total	23,094,849	26,870,069	24,170,812	27,163,392