Don't you fucking. The Wolf Of Wall Street details the rise and fall in real life of one Jordan Belfort who for a while was living high and wide off of other people's money. It was good while it lasted until some relentless FBI agents took him down partly because of his own hubris.
Leonardo DiCaprio as he did with such other real life figures like Howard Hughes and J. Edgar Hoover, each of who lived large in his own way with power, DiCaprio lives large with money. At first it's the realization of the American dream, DiCaprio the middle class kid wants to go on Wall Street. He goes, but then is one of thousands cast adrift by the stock market crash of the late Reagan years.