And underperforming other ETFs today is the iShares U.S. Medical Devices ETF, off about 4.5% in Tuesday afternoon trading. Among components of that ETF with the weakest showing on Tuesday were shares of Procept Biorobotics, lower by about 11.3%, and shares of Alphatec Holdings, lower by about 8.7% on the day.
VIDEO: Tuesday's ETF Movers: COPX, IHI
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