Quidel (NASDAQ: QDEL) is a testing company that's been experiencing tremendous sales growth over the past year, largely because of the popularity of its COVID-19 tests amid the pandemic. Shares are down 17% year to date (while the S&P 500 is up 18%), and it's possible that Quidel's stock could fall even lower before the year is over. One of the reasons I was bullish on the healthcare stock was the potential for Quidel to play a major role in testing for companies and schools as they open back up.
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