Net Income per Unit

3 Months Ended

Mar. 31, 2019

Earnings Per Unit [Abstract]

Net Income per Unit

Net Income per Unit

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 limited partnership units outstanding for each period. 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 limited partnership units outstanding for each period.

	Three Months Ended March 31,
	2019		2018
	(in thousands, except per unit amounts)
Net income attributable to AB Unitholders	$	149,114	$	184,196
Weighted average limited partnership units outstanding – basic	267,336		269,184
Dilutive effect of compensatory options to buy AB Holding Units	72		336
Weighted average limited partnership units outstanding – diluted	267,408		269,520
Basic net income per AB Unit	$	0.55	$	0.68
Diluted net income per AB Unit	$	0.55	$	0.68

For the three months ended March 31, 2019 and 2018, we excluded 29,056 and 1,225,731 options, respectively, from the diluted net income computation due to their anti-dilutive effect.