S&P 500 Gains and Losses Today: Moderna Stock Plunges as Firm Plans R&D Cuts

Key Takeaways The S&P 500 added 0.8% on Thursday, Sept. 12, 2024, extending its winning streak to four days as the latest PPI data showed a softening in wholesale inflation. Warner Bros. Discovery shares surged after entertainment giant renewed its distribution deal with Charter Communications. Kroger's stock rose on earnings news. Moderna said it will cut back on research and development spending, and shares of the vaccine maker plunged. Major U.S. equities indexes headed higher after the latest Producer P ...