Basic net earnings (loss) per share is calculated by dividing net income (loss) attributable to common stockholders by the weighted average number of shares of common stock outstanding during the period. Diluted net earnings (loss) per share is calculated based on the weighted average number of shares of common stock plus the dilutive effect of potential common share equivalents outstanding during the period as determined under the treasury stock method.


	Three Months Ended March 31,
(In millions, except per share data)	2025		2026
Basic net earnings (loss) per share:
Net income (loss) attributable to common stockholders	$	(71.5)	$	8.3
Weighted average shares outstanding:
Common stock	231.9		246.3
Number of shares used in per share computations	231.9		246.3
Net earnings (loss) per share	$	(0.31)	$	0.03

Diluted net earnings (loss) per share:
Net income (loss) attributable to common stockholders	$	(71.5)	$	8.3
Weighted average shares outstanding:
Common stock	231.9		246.3
Effect of dilutive securities	—		3.4
Number of shares used in per share computations	231.9		249.7
Net earnings (loss) per share	$	(0.31)	$	0.03

Potential common share equivalents consist of shares issuable upon the exercise of stock options, vesting of restricted stock or purchase under the Employee Stock Purchase Plan (the "ESPP"), as well as contingent shares associated with our acquisition of Datapipe Parent, Inc. We excluded 19.4 million and 13.8 million potential common shares from the computation of dilutive earnings (loss) per share for the three months ended March 31, 2025 and 2026, respectively, because the effect would have been anti-dilutive.