Benzinga's Top #PreMarket Losers

Lululemon Athletica

dipped 12.63% to $5.95 in pre-market trading after the company issued a weak forecast. Lululemon also announced the retirement of its CFO John Currie. The company reported better-than-expected first-quarter results and also announced a $450 million share buyback program. Himax Technologies

dropped 4.37% to $6.35 in pre-market trading after falling 0.30% on Wednesday. Ariad Pharmaceuticals

shares fell 4.27% to $6.72 in pre-market trading after the company announced a proposed $175 million offering of convertible senior notes due 2019. Exelon

shares dropped 1.40% to $35.25 in pre-market trading after the company priced 50 million shares and 20 million equity units.