INCOME (LOSS) PER SHARE

9 Months Ended

Sep. 30, 2022

Basic net income (loss) per share is computed using the weighted-average number of common shares outstanding during the period. Diluted net income (loss) per share is computed using the weighted-average number of common shares and the effect of potentially dilutive securities outstanding during the period. Potentially dilutive securities include restricted stock units, performance share units, ESPP shares, warrants, capped call transactions and convertible senior notes. If dilutive, those potentially dilutive securities are reflected in diluted net income (loss) per share using the treasury stock method, except for the convertible senior notes, which are subject to the if-converted method.

The following table sets forth the computation of basic and diluted net income (loss) per share of common stock for the three and nine months ended September 30, 2022 and 2021 (in thousands, except share amounts and per share amounts):


	Three Months Ended September 30,				Nine Months Ended September 30,
	2022		2021		2022		2021
Basic and diluted net income (loss) per share:

Numerator
Net income (loss)	$	(55,543)	$	78,701	$	(180,145)	$	90,020
Less: Net income (loss) attributable to noncontrolling interests	680		594		2,157		737
Basic net income (loss) attributable to common stockholders	(56,223)		78,107		(182,302)		89,283

Diluted net income (loss) attributable to common stockholders	(56,223)		78,107		(182,302)		89,283
Plus: Interest expense from assumed conversion of convertible senior notes	—		700		—		1,392
Net income (loss) attributable to common stockholders plus assumed conversions	(56,223)		78,807		(182,302)		90,675

Denominator
Shares used in computation of basic net income (loss) per share	30,307,734		29,567,802		30,070,598		29,282,932
Weighted-average effect of diluted securities
Restricted stock units	—		351,720		—		712,866
Performance share units and other stock-based compensation awards	—		68,616		—		89,981
Convertible senior notes due 2026	—		3,376,400		—		2,308,112
Shares used in computation of diluted net income (loss) per share	30,307,734		33,364,538		30,070,598		32,393,891

Basic net income (loss) per share:	$	(1.86)	$	2.64	$	(6.06)	$	3.05

Diluted net income (loss) per share:	$	(1.86)	$	2.36	$	(6.06)	$	2.80

The following weighted-average potentially dilutive instruments are not included in the diluted net income (loss) per share calculations above because they would have had an antidilutive effect on the net income (loss) per share:


	Three Months Ended September 30,		Nine Months Ended September 30,
	2022	2021	2022	2021
Restricted stock units	2,223,826	854,304	2,448,348	410,856
Performance share units and other stock-based compensation awards	94,690	—	102,406	—
Convertible Senior notes due 2022 (1)	—	—	—	1,144,689
Convertible Senior notes due 2026 (1)	3,376,400	—	3,376,400	—
Warrants	—	—	—	1,170,126
Capped call transactions	3,376,400	3,376,400	3,376,400	2,308,112
Total	9,071,316	4,230,704	9,303,554	5,033,783

(1)We apply the if-converted method in computing the effect of our convertible senior notes on diluted net income (loss) per share, whereby the numerator of our diluted net income (loss) per share computations is adjusted for interest expense, net of tax, and the denominator is adjusted for the number shares into which the convertible senior notes could be converted. The effect is only included in the calculation of income (loss) per share for those instruments for which it would reduce income (loss) per share. See Note 5, Financing Arrangements, for additional information.

We had outstanding Market-based Performance Share Units as of September 30, 2022 and 2021 that were eligible to vest into shares of common stock subject to the achievement of specified performance or market conditions. Contingently-issuable shares are excluded from the computation of diluted income (loss) per share if, based on current period results, the shares would not be issuable if the end of the reporting period were the end of the contingency period. As of September 30, 2022, there were up to 33,333 shares of common stock issuable upon vesting of outstanding Market-based Performance Share Units that were excluded from the table above as the performance or market conditions were not satisfied as of the end of the period.