Benzinga's Top Pre-Market Gainers

BCD Semiconductor Manufacturing (NASDAQ: BCDS ) added 95.98% to $7.80 in the pre-market session. Diodes (NASDAQ: DIOD ) agreed to buy BCD Semiconductor Manufacturing for around $151 million. TeleCommunication Systems (NASDAQ: TSYS ) surged 2.31% to $2.67 in the pre-market session. TeleCommunication Systems sold two of its