How likely is another 1987-like stock market crash? Maybe more than you think. By: MarketWatch October 18, 2023 at 14:59 PM EDT There's a one-in-five chance that over the next 30 years the U.S. market will suffer a 20%-plus single-day plunge. Read More >> Related Stocks: Global X Funds Global X Dow 30 Covered Call ETF