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The era that defined Wall Street is finally, officially over. Michael Lewis, who chronicled its excess in Liar’s Poker, returns to his old haunt to figure out what went wrong.

Steve Kroft looks at some of the arcane Wall Street financial instruments that have magnified the economic crisis.

The director of the Congressional Budget Office said yesterday that the proposed Wall Street bailout could actually worsen the current financial crisis

The bankruptcy of financial services giant Lehman Brothers and the 500-point drop in the stock market on Sept. 15 have sent shock waves through the financial community. Michael Greenberger, a former director at the U.S. Commodity Futures Trading Commission, tells Terry Gross that the government's decision to bail out AIG is a sign that the economy is "teetering on the brink."

Nasdaq has released a new tool for replaying market data, viewing National Best Bid and Offer (NBBO) at any point in time and confirming best execution.

The list of financial firms deploying Web 2.0 applications, both within the enterprise and externally, is growing. TD Ameritrade, Bear Stearns and Wells Fargo all have announced new 2.0 applications in the last few months.

By leveraging predictive analytics and pattern analysis technologies, financial services firms are able to understand their customers, their operations and their markets in greater detail. Perhaps more important, they are able to identify and react to tre