This Investor Sold $5 Million of a Biotech Stock Up 118% in a Year, but Here's Why It Still Seems Bullish on Shares

OrbiMed Advisors sold 143,304 shares of Sionna Therapeutics in the fourth quarter; the estimated transaction value was $5.43 million based on quarterly average prices. Meanwhile, the quarter-end position value increased by $37.56 million, reflecting both trading and stock price movement.