$Pfizer(PFE.US) rose slightly, $Intuitive Surgical(ISRG.US) fell slightly. These two major pharmaceutical and medical device stocks basically moved gently in line with the broader market, showing relative resilience on a distribution day. $Recursion Pharmaceuticals(RXRX.US) dropped about three percent. AI-driven drug discovery stocks, which are more growth-oriented and whose catalysts rely entirely on data readouts, exhibit greater volatility when risk appetite contracts. The biotech sector as a whole is actually recovering today. Large caps are stable, while small caps follow market sentiment. The decline in $Recursion Pharmaceuticals(RXRX.US) is more like the inherent high volatility of an AI narrative stock, not due to pipeline issues—its model platform is still waiting for the next batch of clinical data for validation.