Net Income Per Unit

12 Months Ended

Dec. 31, 2018

Basic net income per unit is derived by reducing net income for the 1% general partnership interest and dividing the remaining 99% by the basic weighted average number of units outstanding for each year. Diluted net income per unit is derived by reducing net income for the 1% general partnership interest and dividing the remaining 99% by the total of the diluted weighted average number of units outstanding for each year.



	Year Ended December 31,
	2018		2017		2016
	(in thousands, except per unit amounts)
Net income attributable to AB Unitholders	$	757,588	$	662,403	$	673,358

Weighted average units outstanding—basic	269,236		266,955		269,084
Dilutive effect of compensatory options to buy AB Holding Units	251		430		554
Weighted average units outstanding—diluted	269,487		267,385		269,638

Basic net income per AB Unit	$	2.79	$	2.46	$	2.48
Diluted net income per AB Unit	$	2.78	$	2.45	$	2.47

We excluded 49,784 options in 2018, 1,970,741 options in 2017 and 2,873,106 options in 2016, from the diluted net income per unit computation due to their anti-dilutive effect.