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Units Outstanding (Tables)
 6 Months Ended
Jun. 30, 2020
Equity [Abstract]  
Changes in Holding Units Outstanding

Changes in AB Holding Units outstanding during the six-month period ended June 30, 2020 are as follows:

Outstanding as of December 31, 2019
98,192,098

Options exercised
5,182

Units issued
408,059

Units retired
(2,173,368
)
Outstanding as of June 30, 2020
96,431,971