Quidel (QDEL) Stock Sinks As Market Gains: What You Should Know Posted byZacks Equity Research January 11, 2022 Leave a comment on Quidel (QDEL) Stock Sinks As Market Gains: What You Should Know Quidel (QDEL) closed the most recent trading day at $127.71, moving -1.98% from the previous trading session.