Stocks Up, Treasury Yields Down After News of Bond Repurchases

The Nasdaq, S&P 500, and Dow all rose roughly a fifth of a percent. Plus: Moderna stock skyrocketed nearly 177% after an experimental vaccine’s success in a study. Pierre Bienaimé hosts. Sign up for WSJ’s free What’s News newsletter . An artificial-intelligence tool assisted in the making of this episode by creating summaries that were based on Wall Street Journal reporting and reviewed and…