Why Rigel Pharmaceuticals Stock Skyrocketed 91% Today

Why Rigel Pharmaceuticals Stock Skyrocketed 91% Today

Source: 
Motley Fool
snippet: 

Shares of Rigel Pharmaceuticals (NASDAQ:RIGL) soared more than 90% on Tuesday after the biotech company announced the start of a clinical trial for a potential treatment for COVID-19 pneumonia.