The staff at ETFChannel.com discusses this ETF that saw unusually high trading volume on Wednesday afternoon and they highlight several of its components with the highest volume as well as the stock lagging the others by about 2.6%.

The iShares US Medical Devices ETF (IHI) is seeing unusually high volume in afternoon trading Wednesday, with over 242,000 shares traded versus three month average volume of about 51,000. Shares of IHI were down about 0.6% on the day.

Components of that ETF with the highest volume on Wednesday were Baxter International (BAX), trading up about 1.5% with over 5.2 million shares changing hands so far this session and Boston Scientific (BSX), off about 0.3% on volume of over 3.3 million shares. Atrion (ATRI) is lagging other components of the iShares US Medical Devices ETF Wednesday, trading lower by about 2.6%.

By the Staff of ETFChannel.com