This document provides statistics and guidelines for identifying and analyzing broadening bottoms chart patterns. Broadening bottoms are middle-of-the-road performers with break-even failure rates around 10% except in bull markets when they are higher. Surprisingly, throwbacks hurt performance and tall, narrow patterns perform better than others. The document defines identification guidelines including a downward price trend, megaphone shape, and at least two minor highs and lows. It also notes statistics such as average rises/declines and failure rates in bull versus bear markets.