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Units Outstanding
 6 Months Ended
Jun. 30, 2017
Equity [Abstract]  
Units Outstanding
Units Outstanding

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

Outstanding as of December 31, 2016
96,652,190

Options exercised
545,458

Units issued
1,876,205

Units retired
(5,570,711
)
Outstanding as of June 30, 2017
93,503,142