Arrowhead Pharmaceuticals shares fell about 9% Tuesday, trading near $62 after touching an intraday low of $59.76. The decline follows a recent surge to a 52-week high after FDA approval of its first drug, REDEMPLO, and an FDA Breakthrough Therapy designation. No single negative catalyst was cited; analysts pointed to profit-taking and volatility after recent gains. Arrowhead also disclosed routine equity grants for new hires.