Sweetgreen is trading at $8.74, up 6.07%, after Wells Fargo upgraded it from Equal-Weight to Overweight and set an $11 price target, citing a faster-than-expected recovery from the summer Cyclospora outbreak. - The analyst also cited improving restaurant traffic and operational fundamentals. - This is a company-specific catalyst, but available reporting tied the initial reaction to September 28, not directly explaining the September 29 move. Broad market indicators were flat or slightly negative, with no evident same-direction explanation.