A few stocks are down on high volume today:

  • Facebook Inc. - Class A (FB) saw its price drop on above-normal volume today, as 115.9 million shares have changed hands or 2.4 times its average daily volume. The stock price dropped 4.1% to $19.05.

  • Merck & (MRK) traded on a volume of 14.7 million, or 1.6 its average daily volume, but its price was down. Shares were down 1.4% to $43.34. Shares have been on on the rise over the past three months, climbing 60 cents (1.4%) from a price of $43.94 on July 19, 2012. The stock has dropped a step closer to its 50-day moving average, sitting just 0.3% above the mark.

  • Celgene (CELG) experienced a price drop on above-average volume today, with 4.4 million shares, or 1.5 its average daily volume, changing hands. Shares dropped 1.6% to $69.11. Shares are down, having dropped $2.83 (-3.9%) from a price of $71.94 on August 10, 2012. The stock has moved down across its 50-day moving average of $67.81 today.

  • McKesson (MCK) saw its price drop on above-normal volume today, as 2.8 million shares have changed hands or 2.3 times its average daily volume. Closing at $86.42, shares dropped 2.5%. The stock has been losing steam over the last month, sliding $9.83 (-10.2%) from a price of $96.25 on July 19, 2012. The stock has moved down across its 200-day moving average of $88.29 today.

  • Transocean (RIG) was down on high volume after trading at a volume of four million, or 1.5 its average daily volume. Shares fell 1.3% to $49.44. Share price is up $1.69 (3.5%) from $47.75 on July 19, 2012. The stock is trading 5.7% above its 50-day moving average and 5% above its 200-day moving average.

  • After trading at a volume of 1.6 million, or 2.2 its average daily volume, (PRGO) saw its price drop. Closing at $106.93, shares slipped 1.8%. The stock has been slipping recently, and shares are down $8.57 (-7.4%) from a price of $115.50 on August 10, 2012. The stock has moved down across its 200-day moving average of $107.00 today.

  • Trading with volume of two million, or 1.8 its average daily volume, Cerner (CERN) saw its price drop on above-normal volume. Shares fell 1.6% to $72.56. The stock is down over the last two months, having fallen $10.95 (-13.1%) from a price of $83.51 on June 20, 2012. The stock is trading at 95.5% of its 50-day moving average and 96.5% of its 200-day moving average.

  • InterOil Corporation (IOC) experienced a price drop on above-average volume today, with 1.5 million shares, or two its average daily volume, changing hands. With a closing price of $78.02, shares dropped 6.4%. Share price climbed over the last three months, now up $20.09 (34.7%) from $57.93 on May 22, 2012. The stock is trading 15% above its 200-day moving average.

  • China Mobile (CHL) traded on a volume of 1.9 million, or two its average daily volume, but its price was down. Shares were down 2%, closing at $53.65. The stock has seen some negative movement recently as shares are down $4.95 (-8.4%) from a price of $58.60 on August 10, 2012. The stock has moved down across its 200-day moving average of $53.80 today.