这篇文章有点意思，从技术上分析了这次大跌里道琼斯工业指数的几个底部：20764， 18050， 15335。
And the first major Fibonacci level, as the 38.2% retracement of the bull market off the March 2009 closing low to the Feb. 12, 2020 record close of 29,551.42 comes in at about 20,764. Basically, close enough to the trend line for horseshoes and technical analysis.
Source: How far can the Dow fall? Here are some key chart points to watch – MarketWatch