8. Net Income (Loss) Per Share Attributable to Common Stockholders

Earnings (Loss) per share

The computation of basic earnings (loss) per share ("EPS") is based on the weighted-average number of common shares outstanding, without consideration for dilutive common stock equivalents. The computation of diluted EPS is based on the weighted-average number of common shares outstanding and dilutive potential common shares, which include shares that may be issued under the stock option plan, as determined using the treasury stock method.

The computation for basic and diluted EPS were as follows (in millions, except share and per share data):


	Three months ended
	March 31,
	2020		2019
Income (loss) (Numerator):
Net income (loss) for basic and diluted EPS	$	9,733	$	(6,155)
Shares (Denominator):
Weighted-average number of common shares outstanding		27,506,927		1,379,444
Effect of dilutive common stock equivalents		1,841,688		—
Weighted-average shares for diluted EPS		29,348,615		1,379,444

Basic EPS	$	0.35	$	(4.46)
Diluted EPS	$	0.33	$	(4.46)

For the quarter ended March 31, 2020, options to purchase 3,000 shares of the Company's common stock were excluded from the computation of diluted net income per share as their effect would have been anti-dilutive.

For the quarter ended March 31, 2019, all shares of preferred stock and options to purchase shares of the Company’s common stock were excluded from the computation of diluted net loss per share as the effect would have been anti-dilutive. Therefore, the weighted average number of common shares outstanding used to calculate both basic and diluted net loss per share attributable to common stockholders is the same. The Company excluded the following potential common shares, presented based on amounts outstanding at period end, from the computation of diluted net loss per share attributable to common stockholders for the period indicated because including them would have had an anti-dilutive effect:


	March 31,
	2019
Preferred stock convertible into common stock		15,560,569
Outstanding options to purchase common stock		2,052,194
Total		17,612,763