Weighted-Average Shares

9 Months Ended

Oct. 01, 2017

Weighted-average shares were calculated as follows (in thousands):



	Three-months Ended		Nine-months Ended
	October 1, 2017	October 2, 2016	October 1, 2017	October 2, 2016
Basic weighted-average common shares outstanding	86,617	85,460	86,526	85,167
Effect of dilutive stock options	3,060	1,886	3,036	1,638
Weighted-average common and common-equivalent shares outstanding	89,677	87,346	89,562	86,805

Stock options to purchase 233,081 and 1,554,129 shares of common stock, on a weighted-average basis, were outstanding during the three-month and nine-month periods ended October 1, 2017, respectively, and 491,375 and 3,641,279 for the same periods in 2016, but were not included in the calculation of dilutive net income per share because they were anti-dilutive.