The transaction was led by AJAX I sponsors (Dan Och and Glenn Fuhrman with board members including Kevin Systrom (Instagram) Anne Wojcicki (23andMe) Jim McKelvey (Square) and Steve Ellis (chipotle)), and Dan Sundheim’s D1 Capital Partners and saw participation from new and existing investors Altimeter, BlackRock, Counterpoint Global (Morgan Stanley) and Fidelity Management and Research Company, Marcho Partners, Mubadala Capital, Pelham Capital, Senator Investment Group (which is interesting, as the founders of the $6.9 billion fund are going separate ways) and Spruce House Partnership.