CRISPR Therapeutics AG (CRSP) shares ended the last trading session 9.2% higher at $62.75. The jump came on an impressive volume with a higher-than-average number of shares changing hands in the session. This compares to the stock's 7% loss over the past four weeks.This rise in share price is attributable to positive investor expectations for the company’s sole-marketed product Casgevy which received marketing approval in late 2023/early 2024. Marketed in partnership with Vertex Pharmaceuticals, Casgevy is ...