Barnes & Noble, Inc. (NYSE:BKS) is down 17.64% heading into the close at $11.16. BKS is down on large volume with 12.3 million shares traded today. BKS shares are down after the company projects wider full-year loss and news they may spin the Nook business off. The company has a market cap of 620.12 million.

MetroPCS Communications, Inc. (NYSE:PCS) is down 8.70% this afternoon at $8.02. PCS has traded 12.3 million shares today, triple its daily average. PCS shares fell today after the company announced it added only 197,000 subscribers in the fourth quarter of 2011. The company has a market cap of 2.91 billion.

Leap Wireless International Inc. (NASDAQ:LEAP) is down 7.07% today at $8.55. LEAP has traded 2.9 million shares so far today, a million more than it usually trades. LEAP is down today after it said it added 175,000 subscribers in the fourth quarter of 2011. Analysts were expecting as many as 195,000 subscribers. The company has market cap of 672.20 million.

Arena Pharmaceuticals, Inc. (NASDAQ:ARNA) is down 4.14% towards the end of the day at $1.74. ARNA has traded 4.8 million shares today, well above its daily average of 1.7 million shares. ARNA shares have dropped as much as $0.40 over the past two days. The company has a market cap of 251.16 million.

Oncothyreon Inc. (NASDAQ:ONTY) is down 7.51% this afternoon at $6.78. ONTY has traded 1.1 million shares today, nearly twice its daily average. ONTY has been trending downward the past three days now and is down about $0.80 since Tuesday. The company has a market cap of 292.38 million.

Vonage Holdings Corporation (NYSE:VG) is down 5% today at $2.38. VG has traded 1.5 million shares today and trades 1.7 million shares a day on average. VG shares are down about $0.30 a share since Tuesday. The company has a market cap of 536.83 million.

Deutsche Bank AG (NYSE:DB) is down 6.21% today at $36.23. DB has traded 4.3 million shares today, about a million more shares than it usually trades. Concerns over the European debt crisis sent major European banks down today including Deutsche Bank. DB has lost close to $4 a share in the past two days. The company has a market cap of 32.63 billion.