Now, for the first time, investors can cut through the hype and see for themselves what works and what doesn't on Wall Street. James O'Shaughnessy, author of the highly-acclaimed Invest Like the Best, analyzes 30 years worth of CompuStat stock market data to show how the 15 most popular investment strategies have actually performed over time. With What Works on Wall Street, investors of all stripes-from the most conservative to the most aggressive-will finally have the facts to pick the best strategies for meeting their investment objectives.