Top Percentage Gainers and Losers as of 2pm 4/13/11 (ZOOM, GRM, SLGN, DCTH, SLGN, QTM, NTAP, RVBD, AG, INVE, YUII, CSR, CIGX, MSB, TRGL, STRA)

Best 1) Zoom Technologies ZOOM: Trading up 42.9% from yesterday's close to $4.45. The company acquired new patent licenses from Qualcomm QCOM, which will allow the company to develop new mobile phones for the global market. Shares had been up as much as 54% earlier in the session. 2) Graham Packaging Company GRM: Trading up 29.3% from yesterday's close to $21.62. Silgan Holdings SLGN announced that it will purchase the company for the equivalent of $19.65 per share in cash and stock. 3) Delcath Systems DCTH: Trading up 19% from yesterday's close to $8.64. The company reported that it has received approval to market and sell its Hepatic Chemosat system in Europe. 4) Silgan Holdings SLGN: Trading up 15.8% from yesterday's close to $42.67. Silgan announced that it will be purchasing Graham Packaging Company GRM for the equivalent of $19.65 in cash and stock. 5) Quantum Corporation QTM: Trading up 15.5% from yesterday's close to $3.06. The company reached an agreement with NetApp NTAP, which will Quantum to use NetApp's worldwide sales network to sell its software. Other notable movers Riverbed Technology RVBD: Up 12.23% from yesterday's close to $34.70. First Majestic Silver AG: Up 10.28% from yesterday's close to $22.64. Worst 1) Identive Group INVE: Trading down 34.5% from yesterday's close to $3.73. A negative article at Seeking Alpha has the stock down. Shares reached a 52-week high in yesterday's session. 2) Yuhe International YUII: Trading down 20.3% from yesterday's close to $5.31. Shares had started out the day in positive territory. 3) China Security & Surveillance Technology CSR: Trading down 9.5% from yesterday's close to $4.18. A negative article from The Motley Fool highlighting potential problems regarding the company's cash flow is taking its toll. 4) Star Scientific CIGX: Trading down 9% from yesterday's close to $3.11. The stock has lost 33.4% over the past seven trading sessions. 5) Mesabi Trust MSB: Trading down 7.8% from yesterday's close to $35.65. The company declared a lower distribution, $0.05 per unit versus $0.125 per unit, versus the same period last year. Other notable movers Toreador Resources TRGL: Down 10% from yesterday's close to $7.79. Strayer Education STRA: Down 7% from yesterday's close to $124.59.