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Units Outstanding
9 Months Ended
Sep. 30, 2016
Equity [Abstract]  
Units Outstanding
Units Outstanding

Changes in AB Units outstanding during the nine-month period ended September 30, 2016 were as follows:
 
 
 
Outstanding as of December 31, 2015
272,301,827

Options exercised
139,093

Units issued
710,925

Units retired
(6,092,926
)
Balance as of September 30, 2016
267,058,919



During the first nine months of 2016, we purchased 15,338 AB Units in private transactions and retired them.