Here are stocks that are up on high volume:

  • Trading with a volume of 38.2 million, or 2.4 times its average daily volume, Arena Pharmaceuticals (ARNA) is up on high volume today. The stock price is up 3.8% to $8.18. The stock is trading 57.1% above its 50-day moving average and 63.7% above its 200-day moving average.

  • Today, Dendreon Corporation (DNDN) is up on high volume, trading at a volume of 9.1 million, or 1.7 times its average daily volume. At $6.64, the stock price is up 6.2%. The stock has fallen over the last three months, dropping $3.51 (-34.6%) from $10.15 on March 16, 2012. The stock is trading at 81.5% of its 50-day moving average and 66.3% of its 200-day moving average.

  • Raptor Pharmaceutical (RPTP) is up on high volume today, trading with volume of 2.8 million, or 15.8 times its average daily volume. Shares are up 5.1% to $5.72. The stock has lost momentum over the last three months, losing $1.23 (-17.7%) from $6.95 on March 16, 2012. The stock has moved up across its 50-day moving average of $5.50 today.

  • Rambus (RMBS) is seeing its price rise on above-normal volume today, as 1.8 million shares, two times the stock's average daily volume, have moved. At $5.46, the stock price is up 12.4%. Shares have been on an upward trajectory over the past month, rising 95 cents (21.1%) from a price of $4.51 on May 14, 2012. The stock has moved down across its 50-day moving average of $4.72 today.

  • Star Scientific (CIGX) is up on high volume today, trading with volume of 1.6 million, or 1.7 times its average daily volume. At $4.16, the stock price has risen 2.3%. The stock is trading 17.5% above its 50-day moving average and 22.6% above its 200-day moving average.

  • Trading with a volume of 1.7 million, or 2.3 times its average daily volume, Orexigen Therapeutics (OREX) is up on high volume today. Shares have risen 5.4% to $3.87. Over the last three months, the stock has lost 93 cents (-19.4%) from a price of $4.80 on March 16, 2012. The stock is trading 10.4% above its 50-day moving average and 17.1% above its 200-day moving average.

  • Today, Tudou Hldg (TUDO) is up on high volume, trading at a volume of 175,485, or 2.2 times its average daily volume. Shares have climbed 2.6% to $37.30.

  • Trading with a volume of 1.3 million, or 4.3 times its average daily volume, Horizon Pharma (HZNP) is up on high volume today. Shares have increased 8.1% to $4.55.

  • Today, YRC Worldwide (YRCW) is up on high volume, trading at a volume of 221,029, or 1.5 times its average daily volume. At $7.25, the stock price has risen 6.9%.