I would recommend Barbarians at the Gate Barbarians at the Gate: The Fall of RJR Nabisco, by Bryan Burrough.
I really enjoyed this one, cause I really like this kind of stuff (Really big corporations or even Empires that for some risen fail, and fail suddenly), it goes in the same kind of vein of Flash Boys.
But if you really enjoyed Flash Boys I think you would enjoy most of the Michael Lewis books (Liar's Poker, The Big Short, The Fifth Risk...)