They've been raking in money thanks to the strong stock market, companies' appetite for debt and initial public offerings.
The biggest factor is entrepreneurship, where inequities resulted in a $13 trillion loss.
The fundamentals of this economy are strong right now but you wouldn’t always know it from the stock markets lately. Volatility has been the word of recent weeks. But on Friday big banks including JPMorgan Chase and Citigroup are expected to show strong profits. Click the audio player above to hear the full story.
The historic merger that changed how Wall Street is regulated happened 20 years ago this weekend.
Success is 'when your company is not in the pages for misconduct,' says Princeton's's David Miller.
Citigroup is rumored to be close to a $7 billion settlement with the Justice Department. How does the DOJ set its fines?
Citigroup has not come roaring out of the financial crisis like Goldman Sachs or JPMorgan Chase. Some analysts think the problems at Citigroup are inherent to the "one-stop-shopping" business model that Citigroup pioneered in the 1990s.