Why Is Atreca (BCEL) Stock Up 85% Today?

Atreca (NASDAQ:BCEL) stock is rising higher on Thursday following news of a major stake in the clinical-stage biopharmaceutical company from an investment advisor.According to a filing with the Securities and Exchange Commission (SEC), Baker Bros. Advisors LP now holds a 19.9% stake in the company. This comes through a mix of Class A shares of BCEL stock and Class B shares that can be converted to Class A shares.Atreca notes that the ability to convert Class B shares to Class A shares with a limitation of a ...