Benzinga's Top #PreMarket Losers

Molycorp (NYSE: MCP) dropped 17.51% to $2.12 in pre-market trading. The decline in the stock may be attributed to Seeking Alpha post: 'Molycorp Is Worth $1.60 Per Share.'

CalAmp (NASDAQ: CAMP) shares declined 13.19% to $19.15 in pre-market trading after the company issued a weak forecast for the second quarter. It expected Q2 earnings of $0.17 to $0.21 per share on revenue of $57 million to $61 million. Analysts estimated earnings of $0.22 per share on revenue of $62.2 million.

Mazor Robotics (NASDAQ: MZOR) fell 8.39% to $16.60 in pre-market trading as the company reported orders for four renaissance systems during the second quarter.

GoPro (NASDAQ: GPRO) dipped 4.51% to $46.60 in pre-market trading after surging for four sessions.

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