Morning Market Losers

Procera Networks

shares dipped 27.72% to $6.18 after the company announced weak preliminary Q3 sales and issued a downbeat full-year forecast. Analysts at Stifel Nicolaus downgraded Procera Networks from Buy to Hold and removed the price target of $15. GT Advanced Technologies

declined 22.48% to $1.00 amid report that company has requested to wind down operations. Knowles

shares fell 21.02% to $19.12 after the company lowered its Q3 forecast. Sizmek

shares dropped 16.11% to $5.99 after the company announced management changes and issued preliminary Q3 forecast. The Manitowoc Company

declined 13.91% to $18.54 following cautious guidance. BMO Capital downgraded Manitowoc from Market Perform to Underperform and lowered the price target from $28.00 to $24.00. Microchip Technology

slipped 12.11% to $40.03 after the company lowered its sales forecast for the second quarter. VOXX International

shares fell 8.75% to $6.99 after the company reported a Q2 loss of $0.11 per share on revenue of $177.30 million. Tesla Motors

shares declined 5.31% to $243.37 following the announcement of all wheel drive car at the Thursday event. Juniper Networks

dropped 5.01% to $19.89 after the company warned that lower-than-expected demand will push third-quarter results below Street views. Groupon

shares fell 2.66% to $6.21. Analysts at Evercore Partners downgraded Groupon from Equalweight to Sell. J. C. Penney Company

shares slipped 1.05% to $7.56. Analysts at Maxim Group downgraded J.C. Penney from Hold to Sell.