The post-election stock market rally buoyed by positive news on a potential coronavirus vaccine has faded in less than a week.

Calix, Inc. popped out of a coil or wedge on Thursday and moved up 2.33, or 9.56%, to 26.69, with a session high of 26.89 from a low of 24.56, on 2.4 million shares traded.

Investors are likely to gain from precise identification of toxic stocks with the help of an investing strategy called short selling. This strategy allows investors to sell a stock first and then buy it when price falls.