One Great Chart: Moderna Surge Makes S&P History -- WSJ
Dow Jones2026/08/19 21:17By WSJ Staff
Moderna stock more than doubled Wednesday after its experimental mRNA-based cancer vaccine with Merck succeeded in a late-stage trial at preventing melanoma from returning or spreading.
-- The 177% move in the stock was the Moderna's largest increase on record and the biggest gain for any stock in the S&P 500 Index in the last 25 years, according to Dow Jones Market Data.
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August 19, 2026 17:17 ET (21:17 GMT)
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