On October 19, 1987, the Dow Jones Industrial Average plummeted from a high of 2,246.74 points to 1,738.74 points, experiencing a 508-point drop. The Chicago Mercantile Exchange witnessed a staggering 28.6% decline in the S&P 500 index futures for December contracts throughout the day.In the face of this situation, many investors not only failed to implement stop-loss measures but also increased their buying. However, professional trader Martin Schwartz demonstrated his risk awareness by promptly implementing a stop-loss strategy.This case highlights the importance of considering stop-loss criteria and plans before entering the market. When market conditions deviate, decisive actions should be taken.How to Set Stop-Loss and Take-Profit OrdersTiger currently provides the functionality t