Amateur investors are advised not to try beat the market. This is because the stock market is highly efficient. Stock prices reflect all relevant information, and new information shows up in prices instantaneously. A corollary of “don’t try to beat the market” is “pay attention when the market acts strangely”. When the stock market does something odd, it normally means something important has happened. This was a crazy week for the stock market. Up until Monday 24 February, it shrugged off the coronavirus. It was on Monday 24 February that the disease seemed to hit an inflection point. According to…