S&P 500 Gains and Losses Today: Moderna Drops as Soft Vaccine Demand Prompts Guidance Cut

Key Takeaways The S&P 500 fell 1.4% on Thursday, Aug. 1, ahead of the latest tech earnings reports and as several data points raised concerns about the health of the U.S. economy. Moderna shares tumbled after the biopharma firm cut its full-year revenue forecast, citing reduced demand for its COVID-19 vaccine in Europe. Implementation of a cost-efficient operating model helped freight transporter C.H. Robinson beat earnings estimates, and its shares moved higher. Major U.S. equities indexes moved lower on t ...