Units Outstanding (Tables)

9 Months Ended

Sep. 30, 2018

Equity [Abstract]

Changes in AB Units Outstanding

Changes in AB Units outstanding during the nine-month period ended September 30, 2018 were as follows:

Outstanding as of December 31, 2017	268,659,333
Options exercised	629,493
Units issued	2,712,263
Units retired (1)	(3,435,327	)
Balance as of September 30, 2018	268,565,762

⁽¹⁾ Includes 4,546 AB Units purchased in private transactions and retired during the first nine months of 2018.