BlackRock’s $25 billion M&A spree is starting to click. When Fink struck those deals — at prices rich enough to raise eyebrows across Wall Street — the question was whether they would remain profitable fiefdoms. Asset-manager deals are notoriously hard to pull off, and he had brought two fiercely founder-led firms into his ultimate founder-led firm. “The marriage of BlackRock, HPS, and GIP across the board on the origination side is only accelerating,” CEO Larry Fink told analysts last week. Elsewhere in Fink’s growing empire, a fight at Aston Martin has two arms of BlackRock on opposing sides.