
Moderna Inc (NASDAQ:MRNA) shares are flat Wednesday morning after a nearly 5% surge on Tuesday. Here’s what investors need to know.
What To Know: Tuesday’s rally was driven by the release of positive preliminary data for its updated 2025-2026 Spikevax formula, which targets the now-dominant LP.8.1 COVID-19 variant. The results showed an eight-fold increase in neutralizing antibodies with no new safety concerns.