Wednesday's ETF with Unusual Volume: ITB (3/27, 1:05 PM ET) -- The iShares U.S. Home Construction ETF (ITB) is seeing unusually high volume in afternoon trading Wednesday, with over 8.6 million shares traded versus three month average volume of about 2.9 million. Shares of ITB were up about 2.4% on the day.

Components of that ETF with the highest volume on Wednesday were Lennar (LEN), trading up about 4.8% with over 7.4 million shares changing hands so far this session, and KB Home (KBH), up about 2.2% on volume of over 4.8 million shares. LGI Homes (LGIH) is the component faring the best Wednesday, up by about 6.9% on the day, while Trex (TREX) is lagging other components of the iShares U.S. Home Construction ETF, trading lower by about 5.2%.

For MarketNewsVideo.com, I'm Sayoko Murase.