Portugal Telecom SGPS, China Techfaith Wireless Comm. Tech. Gapping Down Tuesday

Here are stocks that gapped down today with opening prices significantly lower than the previous trading day's close:

• Portugal Telecom SGPS (NYSE:PT) gapped down today, opening at $4.58 after closing the previous trading session at $5.20. Shares are trading at a volume of 206,626 at a price decrease of 11.9%. The stock has lost momentum over the last three months, losing 80 cents (-14.9%) from $5.38 on February 24, 2012. The stock has moved down across its 50-day moving average of $5.20 today.

• With an opening price of 89 cents, China Techfaith Wireless Comm. Tech. (NASDAQ:CNTF) gapped down from its previous close of $1.04. Shares have dropped 1.9%, trading at a volume of 156,389. The stock is trading at 76.1% of its 50-day moving average and 58.5% of its 200-day moving average.