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Investment in AB
 9 Months Ended
Sep. 30, 2017
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, 2017 are as follows (in thousands):

Investment in AB as of December 31, 2016
$
1,540,508

Equity in net income attributable to AB Unitholders
146,668

Changes in accumulated other comprehensive income (loss)
9,172

Additional investments with proceeds from exercise of compensatory options to buy AB Holding Units
17,672

Cash distributions received from AB
(173,025
)
Capital contributions from AB
(265
)
AB Holding Units retired
(138,954
)
AB Holding Units issued to fund long-term incentive compensation plans
45,176

Change in AB Holding Units held by AB for long-term incentive compensation plans
(5,280
)
Investment in AB as of September 30, 2017
$
1,441,672