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Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2025

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, 2025 and 2024 were as follows:

			For the Three Months Ended March 31,
Basic and Diluted Earnings Per Share			2025						2024
Numerator:
Net income attributable to APAM			$	61,139					$	59,481
Less: Allocation to participating securities			7,297						5,464
Net income available to common stockholders			$	53,842					$	54,017
Denominator:
Basic weighted average shares outstanding			65,373,285						64,319,977
Dilutive effect of nonparticipating share-based awards			—						35,270
Diluted weighted average shares outstanding			65,373,285						64,355,247
Earnings per share - Basic			$	0.82					$	0.84
Earnings per share - Diluted			$	0.82					$	0.84

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			2025						2024
Holdings limited partnership units			10,274,591						10,903,365
Unvested restricted share-based awards			5,392,148						5,473,187
Total			15,666,739						16,376,552

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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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-Topic 260
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