Novavax and Palantir rocket higher, while PayPal slumps and other stocks on the move

Here are some of the biggest movers of the day on Tuesday:

Stock gainers:

Novavax Inc.’s stock NVAX soared 29% after the biotech company reported positive results from a trial of three flu and COVID vaccines and unveiled a restructuring that will see it part with a quarter of its staff. The move put the stock on track for its biggest one-day…