Moderna (MRNA) Joins the S&P 500 Index – Daily Flash BriefingJuly 20, 2021 by Bautis FinancialPrior to the market open tomorrow, Moderna Inc. joins the S&P 500. Here's what you need to know about the stock.Read moreModerna (MRNA) Joins the S&P 500 Index – Daily Flash Briefing