Stock Market Today, Aug. 19: Moderna Skyrockets 177% on Positive Phase 3 Melanoma Data

On August 19, the stock market saw shares edge higher, effectively ending a three-day losing streak. A major highlight of the trading session was Moderna, which experienced a massive surge of 177%. This dramatic increase in stock value followed the release of positive Phase 3 melanoma data. While the broader market showed modest gains, the biotech sector saw significant volatility driven by the successful clinical results reported by the pharmaceutical company during the day.