Morning Market Losers

Advanced Energy Industries

shares dipped 15.10% to $18.16 after the company reported downbeat quarterly results and issued a weak Q2 outlook. Interactive Intelligence Group

shares slipped 14.38% to $53.17 after the company reported a Q1 loss of $0.02 per share. Fabrinet

shares slipped 12.74% to $19.25 after the company reported a Q3 earnings of $0.34 per share on revenue of $167.70 million. Needham downgraded Fabrinet from Buy to Hold. athenahealth

shares declined 12.45% to $111.00 after Greenlight Capital's David Einhorn said that athenahealth's stock price could decline as much as 80%. Medifast

declined 10.08% to $28.09 after the company announced Q1 results. Twitter

declined 8.95% to $35.28 on the end of lockup period. MTS Systems

dipped 7.86% to $62.15 after the company reported FQ2 results. Cynosure

declined 7.45% to $23.51 after the company reported Q1 results. The company's board raised its share repurchase program to $35 million. Hanger

fell 6.60% to $31.40 on weaker-than-expected Q1 results. Solazyme

tumbled 6.54% to $10.15 after the company reported weaker-than-expected Q1 results. Ballard Power Systems

shares fell 6.29% to $3.13 after tumbling 6.44% on Monday. YY

declined 3.26% to $59.94 after the company reported Q1 results. The company's quarterly net income surged 187.2% to RMB183.6 million (US$29.5 million), versus RMB63.9 million. American International Group

slipped 2.50% to $51.40 after the company reported a 27% drop in its first-quarter net income. AIG posted its adjusted earnings of $1.21 per share, versus analysts' estimates of $1.06 per share.