Benzinga's Top Pre-Market Losers

Cleantech Solutions International Inc

dipped 8.93% to $5.20 in the pre-market session. CLNT shares have dropped 92.89% over the past 52 weeks, while the S&P 500 index has gained 4.84% in the same period. ClickSoftware Technologies Ltd

moved down 8.22% to $11.50 in the pre-market session. CKSW projects Q1 revenue to rise around 12% versus the first quarter of 2011. Optimer Pharmaceuticals Inc

shares fell 4.83% to $13.60 in the pre-market trading. OPTR named Hank McKinnell as its new Chairman. Sprint Nextel Corp

dipped 2.90% to $2.68 in the pre-market session. Sprint Nextel's PEG ratio is -0.30.