The Dow Jones fell over 900 points just after opening bell on Nov. 26, with other major Wall Street stock indexes—and risk assets more generally—also seeing sell-offs as news of a new COVID-19 variant spreading in South Africa seems to have sparked a broader risk-off sentiment among investors. By 10:30 a.m. New York time, the Dow was down around 870 points, or 2.44 percent, after briefly falling more than 900 points before seeing a slight relief rally. The benchmark S&P 500 fell nearly 100 points, or around 2 percent, after markets opened, and by 10:30 a.m. was trading down around 89 points, or 1.89 percent, while the tech-heavy Nasdaq was down around 200 points, or 1.23 percent. Overnight headlines about the emergence of the new COVID-19 variant in South Africa sent a ripple of uncertainty across markets, knocking down U.S. and global shares, sending crude oil prices tumbling over 10 …