Units Outstanding (Tables)

6 Months Ended

Jun. 30, 2017

Equity [Abstract]

Changes in AB Units Outstanding

Changes in AB Units outstanding during the six-month period ended June 30, 2017 were as follows:

Outstanding as of December 31, 2016	268,893,534
Options exercised	545,458
Units issued	1,876,205
Units retired (1)	(5,601,111	)
Balance as of June 30, 2017	265,714,086

⁽¹⁾ Includes 30,400 AB Units purchased in private transactions and retired during the first six months of 2017.