Afternoon Market Losers

NeuroMetrix NURO dropped 16.16% to $2.18 after the company announced $5 million placement of preferred stock with single institutional investor. Epizyme EPZM dipped 4.04% to $25.70 after the company announced closing of its IPO and full exercise of over-allotment option. JA Solar Holdings Co JASO fell 11.45% to $6.73 on the company's unsustainable margin strength. Zogenix ZGNX dropped 10.27% to $1.32 on company's announcement to cut 55 employees. Ampio Pharmaceuticals AMPE declined 11.18% to $5.97 after a day of high volume trading. Affymax AFFY tumbled 19.78% to $1.25 after a recent delisting letter from NASDAQ. Tesaro TSRO dipped 10.36% to $39.80 after Monday's tremendous gain. Giant Interactive Group GA dropped 10.65% to $7.59 after the company announced secondary offering of 15,137,853 American Depositary Shares by selling shareholders.