Buy low during a situation where most of the lending has froze up, and then sell it after the economy has started growing and billions have been printed (with the primary beneficiary being Wall Street), it is no surprise that one would make money on those investments.
The point here being the large majority of taxpayers would be "surprised" TARP didn't lose billions or trillions of government funds, let alone made billions for taxpayers.
I doubt even many politicians are aware of that. I'm sure that Rand Paul believes that TARP lost money. He is the same guy after all who thinks that government grew under Obama.