Now that I’ve chowed down a bunch of Stephen Frey books, if there’s one you read, it should be The Legacy. It combines light Wall Street stuff with a giant JFK / government / mafia conspiracy. It’s well written, lots of twists, turns, unexpected surprises and – yes – a happy ending.
In contrast, The Day Trader sucked. I didn’t finish it, but I’m going to count it as read since I bailed more then half way through.