Benzinga's Top Pre-Market Gainers

BCD Semiconductor Manufacturing BCDS added 95.98% to $7.80 in the pre-market session. Diodes DIOD agreed to buy BCD Semiconductor Manufacturing for around $151 million. TeleCommunication Systems TSYS surged 2.31% to $2.67 in the pre-market session. TeleCommunication Systems sold two of its U.S. patents to IP Cube Partners for a multi-seven-figure payment. Discover Financial Services DFS soared 1.70% to $38.99 in the pre-market trading. Discover Financial's PEG ratio is 0.83. Research In Motion RIMM moved up 1.06% to $11.95 in the pre-market session. Research In Motion's trailing-twelve-month revenue is $12.59 billion.