In the world of technical analysis, few names command as much mystique and respect as William Delbert Gann. Born in 1878, Gann was a pioneer of market forecasting who allegedly turned a few hundred dollars into over $50 million during his career. While modern traders debate the esoteric nature of his theories involving geometry, astrology, and ancient mathematics, one practical setup has emerged from his work that continues to be used by disciplined swing traders: .