Net Income Per Share

The following table sets forth the computation of basic and diluted net income per share of Class A and Class B common stock and Class C capital stock (in millions, except share amounts which are reflected in thousands, and per share amounts, unaudited):



	Three Months Ended September 30,
	2016								2017
	Class A			Class B			Class C		Class A			Class B			Class C
Basic net income per share:
Numerator
Allocation of undistributed earnings	$	2,171		$	357		$	2,533	$	2,891		$	457		$	3,384
Denominator
Number of shares used in per share computation	294,945			48,513			344,103		297,804			47,078			348,603
Basic net income per share	$	7.36		$	7.36		$	7.36	$	9.71		$	9.71		$	9.71
Diluted net income per share:
Numerator
Allocation of undistributed earnings for basic computation	$	2,171		$	357		$	2,533	$	2,891		$	457		$	3,384
Reallocation of undistributed earnings as a result of conversion of Class B to Class A shares	357			0			0		457			0			0
Reallocation of undistributed earnings	(25		)	(5		)	25		(38		)	(7		)	38
Allocation of undistributed earnings	$	2,503		$	352		$	2,558	$	3,310		$	450		$	3,422
Denominator
Number of shares used in basic computation	294,945			48,513			344,103		297,804			47,078			348,603
Weighted-average effect of dilutive securities
Add:
Conversion of Class B to Class A common shares outstanding	48,513			0			0		47,078			0			0
Restricted stock units and other contingently issuable shares	1,923			0			8,956		1,070			0			9,161
Number of shares used in per share computation	345,381			48,513			353,059		345,952			47,078			357,764
Diluted net income per share	$	7.25		$	7.25		$	7.25	$	9.57		$	9.57		$	9.57



	Nine Months Ended September 30,
	2016								2017
	Class A			Class B			Class C		Class A			Class B			Class C
Basic net income per share:
Numerator
Allocation of undistributed earnings	$	6,047		$	1,013		$	7,085	$	6,734		$	1,069		$	7,879
Denominator
Number of shares used in per share computation	293,723			49,214			344,162		297,291			47,189			347,853
Basic net income per share	$	20.59		$	20.59		$	20.59	$	22.65		$	22.65		$	22.65
Diluted net income per share:
Numerator
Allocation of undistributed earnings for basic computation	$	6,047		$	1,013		$	7,085	$	6,734		$	1,069		$	7,879
Reallocation of undistributed earnings as a result of conversion of Class B to Class A shares	1,013			0			0		1,069			0			0
Reallocation of undistributed earnings	(68		)	(16		)	68		(92		)	(17		)	92
Allocation of undistributed earnings	$	6,992		$	997		$	7,153	$	7,711		$	1,052		$	7,971
Denominator
Number of shares used in basic computation	293,723			49,214			344,162		297,291			47,189			347,853
Weighted-average effect of dilutive securities
Add:
Conversion of Class B to Class A common shares outstanding	49,214			0			0		47,189			0			0
Restricted stock units and other contingently issuable shares	2,204			0			8,896		1,255			0			9,497
Number of shares used in per share computation	345,141			49,214			353,058		345,735			47,189			357,350
Diluted net income per share	$	20.26		$	20.26		$	20.26	$	22.30		$	22.30		$	22.30

For the periods presented above, the net income per share amounts are the same for Class A and Class B common stock and Class C capital stock because the holders of each class are entitled to equal per share dividends or distributions in liquidation in accordance with the Amended and Restated Certificate of Incorporation of Alphabet Inc.