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Units Outstanding
 12 Months Ended
Dec. 31, 2019
Equity [Abstract]  
Units Outstanding Units Outstanding

Changes in AB Holding Units outstanding for the years ended December 31, 2019 and 2018 are as follows:
 
2019
 
2018
Outstanding as of January 1,
96,658,278

 
96,461,989

Options exercised
511,894

 
889,119

Units issued
4,833,715

 
6,153,320

Units retired
(3,811,789
)
 
(6,846,150
)
Outstanding as of December 31,
98,192,098

 
96,658,278