Beam Therapeutics Inc. (BEAM) shares ended the last trading session 5.7% higher at $21.46. 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 12.3% gain over the past four weeks.The sudden price rise can be attributed to growing investors’ optimism surrounding the company’s promising pipeline. Last month, the FDA granted orphan drug designation to Beam Therapeutics’ investigational genome-editing candidate, BEAM-101, ...