https://www.marketwatch.com/story/here-are-some-of-the-dows-key-downside-chart-points-to-watch-2020-03-11?mod=mw_latestnews
How far can the Dow fall? Here are some key chart points to watch
Published: March 12, 2020 at 8:23 a.m. ET
By Tomi Kilgore
A major uptrend line and the first Fibonacci retracement converge at roughly 20,750
［マーケット・ウオッチ］コンテンツのダウ平均は、どこまでの下げがあり得るか？
フィボナッチ級数で試算すると・・・

解説図
https://ei.marketwatch.com/Multimedia/2020/03/11/Photos/NS/MW-IC082_DowTre_20200311215502_NS.png?uuid=7cfb0254-6404-11ea-9d05-9c8e992d421e

And the first major Fibonacci level, as the 38.2% retracement of the bull marke
t 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.