Home Box Office, Inc.
Founded by Charles Dolan and based out of WarnerMedia's corporate headquarters at the 30 Hudson Yards complex in the West Side of Manhattan , its main properties include its namesake pay television network Home Box Office ( HBO ) , sister service Cinemax , the HBO streaming service ( a secondary HBO-branded service , HBO Max , is operated under an eponymous sister subsidiary of WarnerMedia that shares principal management with Home Box Office , Inc . ) , and HBO Films . 
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