A few stocks are down on high volume today:

  • Trading at a volume of 17.4 million, or 2.6 times its average daily volume, Amrica Mvil S.A.B de C.V (AMX) is down on high volume today. Shares are off 8.6% to $25.83. Shares have shown some positive movement over the last two months as the price has climbed $2.27 (9.6%) from a price of $23.56 on March 9, 2012. The stock is trading 3.4% above its 50-day moving average and 7.3% above its 200-day moving average.

  • Rackspace Hosting (RAX) is trading down on above-average volume today, seeing a price drop on a volume of 8.1 million, or 4.3 times its average daily volume. The stock price has dropped 11.1% to $51.40. The stock has seen some negative movement recently as shares are down $7.15 (-12.2%) from a price of $58.55 on May 1, 2012. The stock is trading 5% above its 200-day moving average.

  • Polo Ralph Lauren (RL) is seeing its price fall on above-normal volume today, as 1.7 million shares have moved, or 2.6 times its average daily volume. A decrease of 6.1% has brought the stock price to $158.44. Over the last month, the share price has dropped $18.01 (-10.2%) from $176.45 on April 9, 2012. The stock has moved down across its 200-day moving average of $160.22 today.

  • Sirius XM Radio (SIRI) is trading down on a volume of 85.7 million, or 1.6 times its normal daily volume. The stock is down 1.6% to $2.13. The stock is down over the last two months, having fallen 22 cents (-9.4%) from a price of $2.35 on March 9, 2012. The stock is trading 3.5% above its 200-day moving average.

  • Trading at a volume of four million, or 1.7 times its average daily volume, Michael Kors Holdings (KORS) is down on high volume today. The stock price has slipped 6.6% to $41.19.

  • Perrigo Company (PRGO) is down on high volume today, trading with volume of 1.6 million, or 3.3 times its average daily volume. The stock price is $97.95, reflecting a 5.6% decrease. The stock has been slipping in the last two months, down $7.14 (-6.8%) from a price of $105.09 on March 9, 2012. The stock has moved down across its 200-day moving average of $99.27 today.

  • Electronic Arts (EA) is trading down on a volume of 10.6 million, or 1.5 times its average daily volume. At $14.19, shares are down 6.2%.

  • Today, Ulta Salon Cosmetics & Fragrance (ULTA) is down on high volume, trading at a volume of 1.6 million, or two times its average daily volume. Shares are off 4.6% to $82.14. The share price has been sliding in the last month, down $12.23 (-13%) from $94.37 on April 9, 2012. The stock has dropped a step closer to its 200-day moving average, sitting just 2.5% above the mark.

  • DnB NOR (DNB) is trading down on a volume of 1.5 million, or 3.8 times its normal daily volume. The stock price has sunk 14.2% to $64.93. The stock has been on a downward trajectory over the last two months, decreasing $19.70 (-23.3%) from a price of $84.63 on March 9, 2012. The stock is trading at 80.2% of its 50-day moving average and 84.4% of its 200-day moving average.