Adverum Biotechnologies shares rise 4.86% after-hours despite reporting a $49.2 million loss in Q2.

Adverum Biotechnologies, Inc. rose 4.86% in after-hours trading, following the release of its second-quarter earnings report. The company reported a loss of $49.2 million, or $2.34 per share, which fell short of Wall Street's expectations of a $2.24 per share loss. Despite the loss, the stock price increased, possibly due to investor reactions to the earnings report or other market dynamics.