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Why Is Moderna (MRNA) Stock Price Up 8.86% Today, August 21? Cancer Vaccine Data Extends Repricing
Moderna (MRNA) rose 8.86% to $145.13 on August 21, 2026 as investors continued to price the Phase 3 success of its personalized mRNA cancer therapy with Merck. Read the daily analysis of Moderna's oncology-platform outlook, momentum risk and key technical levels.