10 Earnings Per Share

Basic and diluted EPS calculations are detailed as follows (in thousands, except per share data):


	Three Months Ended September 29, 2018
	Net Income		Weighted- Average Shares		Per Share
	(Numerator)		(Denominator)		Amount
Net income per basic common share	$	141,014		76,575	$	1.84
Effect of dilutive stock option, restricted stock, performance stock unit and restricted stock unit securities		—		561		(0.01	)

Net income per diluted common share	$	141,014		77,136	$	1.83


	Three Months Ended September 30, 2017
	Net Income		Weighted- Average Shares		Per Share
	(Numerator)		(Denominator)		Amount
Net income per basic common share	$	136,104		79,712	$	1.71
Effect of dilutive stock option, restricted stock, performance stock unit and restricted stock unit securities		—		809		(0.02	)

Net income per diluted common share	$	136,104		80,521	$	1.69


	Nine Months Ended September 29, 2018
	Net Income		Weighted- Average Shares		Per Share
	(Numerator)		(Denominator)		Amount
Net income per basic common share	$	408,642		77,741	$	5.26
Effect of dilutive stock option, restricted stock, performance stock unit and restricted stock unit securities		—		654		(0.05	)

Net income per diluted common share	$	408,642		78,395	$	5.21


	Nine Months Ended September 30, 2017
	Net Income		Weighted- Average Shares		Per Share
	(Numerator)		(Denominator)		Amount
Net income per basic common share	$	373,483		79,908	$	4.67
Effect of dilutive stock option, restricted stock, performance stock unit and restricted stock unit securities		—		752		(0.04	)

Net income per diluted common share	$	373,483		80,660	$	4.63

For the three and nine months ended September 29, 2018, the Company had 0.3 million and 0.1 million stock options that were antidilutive, respectively, due to having higher exercise prices than the Company’s average stock price during the period. For the three and nine months ended September 30, 2017, the Company had 0.4 million and 0.5 million stock options that were antidilutive, respectively. These securities were not included in the computation of diluted EPS. The effect of dilutive securities was calculated using the treasury stock method.