A sell signal is flashing on Buffett’s favorite indicator. Warren Buffett said this metric signaled the 2001 crash — now it’s sounding the alarm on global markets - MarketWatch #Warren_Buffett #investing https://www.marketwatch.com/story/warren-buffett-said-this-metric-signaled-the-2001-crash-now-its-sounding-the-alarm-on-stocks-around-the-world-2020-08-12