Benzinga’s Top Pre- Market Gainers (CAMD, CLDX, JAVA, SONS, TSTC, GERN, ARMH)

California Micro Devices Corporation (NASDAQ: CAMD)(FREE stock trend analysis) has surged 48.85% to $4.54 in the pre-market session after On Semiconductor reported that it plans to buy California Micro Devices for $4.70 a share in cash. Each company’s board of directors has approved the proposed transaction and merger agreement. The 52-week trading range for CAMD is $1.48 - $3.32. So far in 2009, CAMD gained over 60%.

Celldex Therapeutics, Inc. (NASDAQ: CLDX)(FREE stock trend analysis) has jumped 18% to $5.30 in the pre-market session. Yesterday, Celldex Therapeutics announced positive results from Phase 2 study of CDX-011 used in advanced breast cancer. The 52-week trading range for Celldex Therapeutics is $4.16 - $14.19. In the last trading session, CLDX closed at $4.49.

Sun Microsystems, Inc. (NASDAQ: JAVA)(FREE stock trend analysis) has moved up 9.81% to $8.36 in the pre-market session. The 52-week trading range for JAVA is $3.45 - $9.37. In the previous trading session, JAVA closed at $8.36. In the last six months, Sun Microsystems fell by around 10%.

Sonus Networks, Inc. (NASDAQ: SONS)(FREE stock trend analysis) has surged 5.14% to $2.25 in the pre-market session. The 52-week trading range for SONS is $1.09 - $2.45. So far in the current year, Sonus Networks gained over 35%. In the last trading session, SONS ended at $2.14.

Telestone Technologies Corporation (NASDAQ: TSTC)(FREE stock trend analysis) has climbed 2.52% to $15.45. The 52-week trading range for TSTC is $0.75 - $17.30. Telestone Technologies closed at $15.45 in the previous trading session. So far in the current year, TSTC surged over 990%.

Geron Corporation (NASDAQ: GERN)(FREE stock trend analysis) has increased 2.84% to $5.80 in the pre-market session. Geron Corporation today announced that the U.S. Patent and Trademark Office has granted Geron’s request for an interference with U.S. Patent No. 7,510,876 owned by Novocell, Inc. The 52-week trading range for GERN is $3.67 - $9.24. In the last six months, GERN declined by over 15%.

ARM Holdings plc (ADR) (NASDAQ: ARMH)(FREE stock trend analysis) has moved up 3.20% to $8.30 after Deutsche Bank initiated coverage on ARM Holdings with a Buy rating, citing ARMH’s dominant position in the wireless chip IP and healthy cash generation. In the last trading session, ARM Holdings closed at $8.04.