Benzinga's Top #PreMarket Losers

shares declined 13.62 percent to $4.25 in pre-market trading after the company reported downbeat Q2 results and issued a weak Q3 outlook.

shares dropped 13.32 percent to $171.34 in pre-market after the company reported Q2 results and issued a weak sales forecast for the third quarter.

shares tumbled 3.23 percent to $2.70 in pre-market trading. AudioCodes reported a Q2 loss of $(0.01) per share on revenue of $32.405 million.

fell 1.24 percent to $39.70 in pre-market trading after slipping 5.43 percent on Monday.

shares fell 0.67 percent to $50.70 in pre-market trading. Citigroup downgraded KLA-Tencor from Neutral to Sell.