Net Income (Loss) per Share

Our calculation of the diluted share count includes the number of shares from our equity awards with market conditions or performance conditions that would be issuable under the terms of such awards at the end of the reporting period. For equity awards with a market condition, the maximum number of shares issuable are included in the diluted share count as of September 28, 2019, as the market condition would have been achieved at the highest level of vesting if measured as of the end of the reporting period. For equity awards with a performance condition, no shares are included in the diluted share count as of September 28, 2019, as vesting of these awards is contingent upon evaluation of the performance condition over two consecutive trailing four-quarter periods starting as of the date the awards were issued, which have not yet elapsed. See "Note 9 - Stock-Based Compensation" to our consolidated financial statements for further discussion of our equity awards with market conditions or performance conditions.

A summary of basic and diluted Net income (loss) per share is presented in the following table:



	Three Months Ended				Nine Months Ended
(in thousands, except per share data)	September 28, 2019		September 29, 2018		September 28, 2019		September 29, 2018
Net income (loss)	$	13,539	$	6,974	$	29,506	$	(19,201	)

Shares used in basic Net income (loss) per share	132,997		127,816		132,065		125,578
Dilutive effect of stock options, RSUs, ESPP shares, and equity awards with a market condition or performance condition	5,897		1,658		5,614		—
Shares used in diluted Net income (loss) per share	138,894		129,474		137,679		125,578

Basic Net income (loss) per share	$	0.10	$	0.05	$	0.22	$	(0.15	)
Diluted Net income (loss) per share	$	0.10	$	0.05	$	0.21	$	(0.15	)

The computation of diluted Net income (loss) per share excludes the effects of stock options, restricted stock units ("RSUs"), Employee Stock Purchase Plan ("ESPP") shares, and equity awards with a market condition or performance condition that are antidilutive, aggregating approximately the following number of shares:



	Three Months Ended		Nine Months Ended
(in thousands)	September 28, 2019	September 29, 2018	September 28, 2019	September 29, 2018
Stock options, RSUs, ESPP shares, and equity awards with a market condition or performance condition excluded as they are antidilutive	909	2,299	328	8,284

Stock options, RSUs, and ESPP shares that are antidilutive at September 28, 2019 could become dilutive in the future.