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Investment in AB
 9 Months Ended
Sep. 30, 2023
Equity Method Investments and Joint Ventures [Abstract]  
Investment in AB Investment in AB
Changes in AB Holding’s investment in AB during the nine-month period ended September 30, 2023 are as follows (in thousands):

Investment in AB as of December 31, 2022$2,074,626 
Equity in net income attributable to AB Unitholders211,264 
Changes in accumulated other comprehensive income(1,122)
Cash distributions received from AB(248,529)
Capital contributions (from) AB(2,499)
AB Holding Units retired(72,592)
AB Holding Units issued to fund long-term incentive compensation plans8,005 
Change in AB Holding Units held by AB for long-term incentive compensation plans3,893 
Investment in AB as of September 30, 2023$1,973,046