Basic income per share is computed by dividing net income by the weighted-average number of shares of Class A common stock outstanding during the period. Diluted income per share is computed giving effect to all potentially dilutive shares unless their effect is antidilutive.

A reconciliation of the numerator and denominator used in the calculation of basic and diluted income per share is as follows:


	Three Months Ended June 30,				Six Months Ended June 30,
	2026		2025		2026		2025
Numerator:
Net income	$	240.1	$	199.9	$	454.7	$	419.4







Denominator:
Weighted-average shares of Class A common stock outstanding—basic	130,764		138,734		132,187		140,200
Effect of dilutive securities:

Stock options	77		373		93		391
RSUs, PSUs and employee stock purchase plan shares	153		2,301		486		2,796
Weighted-average shares of Class A common stock outstanding—diluted	130,994		141,408		132,766		143,387


Net income per share of Class A common stock—basic	$	1.84	$	1.44	$	3.44	$	2.99
Net income per share of Class A common stock—diluted	$	1.83	$	1.41	$	3.43	$	2.92

The following number of weighted-average potentially dilutive shares were excluded from the calculation of diluted income per share because the effect of including such shares would have been antidilutive:


	Three Months Ended June 30,		Six Months Ended June 30,
	2026	2025	2026	2025


RSUs, PSUs and employee stock purchase plan shares	1,604	102	1,056	69