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Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2021

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method

The computation of basic and diluted earnings per share for the three months ended March 31, 2021 and 2020 were as follows:

			For the Three Months Ended March 31,
Basic and Diluted Earnings Per Share			2021						2020
Numerator:
Net income attributable to APAM			$	77,278					$	34,825
Less: Allocation to participating securities			7,139						6,835
Net income available to common stockholders			$	70,139					$	27,990
Denominator:
Basic weighted average shares outstanding			58,758,284						53,265,479
Dilutive effect of nonparticipating equity awards			14,985						—
Diluted weighted average shares outstanding			58,773,269						53,265,479
Earnings per share - Basic			$	1.19					$	0.53
Earnings per share - Diluted			$	1.19					$	0.53

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

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 March 31,
Anti-Dilutive Weighted Average Shares Outstanding			2021						2020
Holdings limited partnership units			15,068,264						20,069,152
Unvested restricted share-based awards			5,333,755						5,177,625
Total			20,402,019						25,246,777

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- Definition

Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities.

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Tabular disclosure of the effect of income (loss) on basic earnings per share.

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