The story
From wolf (“any very ravenous, rapacious, or destructive person or thing”) + of + Wall Street (“American financial institutions or financial markets as a whole; big-business interests”).
Etymology from Wiktionary, CC BY-SA 4.0.
wolf of Wall Street
Today it means: (A name for) an aggressive, prominent, and wealthy financier; specifically (derogatory), one who swindles or takes unfair advantage of people. Full definition →