Why Sweetgreen Stock Plummeted by Nearly 15% This Week

Sweetgreen (SG) dropped nearly 15% this week after the CDC and FDA issued warnings about a cyclospora parasite outbreak linked to lettuce across nine states. The outbreak has infected 1,947 people and resulted in 98 hospitalizations, with no deaths reported. No cases have been traced to Sweetgreen locations, but the regulatory alerts triggered a sharp selloff as investors weighed potential supply chain and consumer confidence risks for the salad-focused chain.

The cyclospora parasite, typically transmitted through contaminated produce, poses a particular threat to Sweetgreen's business model given its heavy reliance on fresh lettuce and greens as core menu ingredients. While the company has not been directly implicated, the broader food safety concerns drove the week's decline as traders priced in both near-term operational disruption and the possibility of customers avoiding fresh salad concepts until the outbreak is contained.