MoSys, Inc. (NASDAQ:MOSY) is up 42.76% in midday trading at $4.24. MOSY has traded 1.4 million shares so far today, way above its daily average of 88 thousand shares. MOSY shares are up today after patent sale to Tessera for $35 million. The company has a market cap of 161.43 million. Maximize Your Trades With Profitly

Leap Wireless International Inc. (NASDAQ:LEAP) is up 16.14% today at $9.85. LEAP has traded 2.5 million shares so far today, 600 thousand shares more than its daily average. LEAP is up today after rumors it may be acquired by AT&T. The company has a market cap of 761.93 million.

Voyager Oil & Gas, Inc. (AMEX:VOG) is up 13.24% in midday trading at $2.48. VOG has traded 212 thousand shares so far today and 234 thousand shares. The company has a market cap of 143.46 million.

ZAGG Inc. (NASDAQ:ZAGG) is up 9.32% at $7.27 today. ZAGG has traded 1.4 million shares so far today, well above its daily average of 987 thousand shares. ZAGG is bouncing back some today after falling more than $2 a share since last Friday. The company has a market cap of 213.67 million.

RAM Energy Resources, Inc. (NASDAQ:RAM) is up 6.69% in midday trading at $3.03. RAM has traded 3.3 million shares so far today, more than three times its daily average. The company has a market cap of 241.16 million. Maximize Your Trades With Profitly

Metro PCS Communications, Inc. (NYSE:PCS) is up 4.25% at $8.59 today. PCS has traded 1.7 million shares today and trades 4.7 million shares. PCS is up today on rumors of AT&T acquiring them. The company has a market cap of 3.13 billion.

Renren Inc. (NYSE:RENN) is up 3.94% in midday trading at $3.43. RENN has traded 3.3 million shares so far today and trades 3.6 million shares a day on average. RENN has fallen more than 50% since the beginning of November. The company has a market cap of 1.34 billion.