(NASDAQ:

) shares dropped 39.52 percent to $2.25. Enphase Energy reported Q3 earnings of $0.08 per share on revenue of $102.9 million. The company also issued a weak Q4 revenue forecast.

(NASDAQ:

) declined 31.68 percent to $1.30. Wi-Lan reported Q3 earnings of C$0.10 per share on revenue of C$21.4 million and announced plans to spin out R&D unit.

(NASDAQ:

) shares slipped 30.77 percent to $2.79. Groupon reported better-than-expected earnings for the third quarter, but the company's sales missed analysts' estimates. The company also issued a weak forecast for the current quarter.

(NASDAQ:

) shares declined 28.98 percent to $25.03. FARO Tech reported a Q3 loss of $0.05 per share on revenue of $72.5 million. The company also announced plans to reduce workforce by 8 percent.

(NYSE:

) shares fell 25.19 percent to $5.76 after the company reported weaker-than-expected Q3 results and lowered its FY15 forecast.

(NASDAQ:

) shares declined 19.60 percent to $19.24 after the company reported a wider-than-expected Q3 loss.

(NYSE:

) fell 17.28 percent to $12.73 on downbeat Q3 results.

(NASDAQ:

) shares slipped 14.05 percent to $54.06 after the company reported downbeat Q3 earnings.

(NASDAQ:

) dropped 7.59 percent to $2.98. RBC Capital downgraded MannKind from Outperform to Underperform.

(NASDAQ:

) shares shrank 7.36 percent to $35.74 after surging 23.10 percent on Tuesday.