Monday’s pre-market gainers and losers

Here are the biggest percentage gainers and losers in pre-market trading among companies with a market cap between $50 million and $750 million:

Biggest percentage gainers:

• STEC, Inc. (Nasdaq:STEC), up 10% after the provider of flash memory products posted first-quarter results that trumped analysts’ estimates and issued rosy second-quarter guidance above the consensus on Wall Street.
• Eagle Test Systems Inc. (Nasdaq:EGLT), up 9%.
• Approach Resources, Inc. (Nasdaq:AREX), up 9%.

Biggest percentage losers:

• RRsat Global Communications Network Ltd. (Nasdaq: RRST), down 4.3%, despite reporting first-quarter results that met Wall Street’s expectations. The provider of content management and global distribution services also issued second-quarter revenue guidance that was inline with the Street.
• Immersion Corp. (Nasdaq:IMMR), down 3.3%.
• PeopleSupport Inc. (Nasdaq:PSPT), down 2.3%.