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Units Outstanding
 9 Months Ended
Sep. 30, 2017
Equity [Abstract]  
Units Outstanding
Units Outstanding

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

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

Options exercised
1,039,632

Units issued
1,944,310

Units retired
(6,009,819
)
Outstanding as of September 30, 2017
93,626,313