Benzinga's Top #PreMarket Losers

Abengoa SA

shares dropped 50.30% to $7.48 in pre-market trading after falling 10.42% on Thursday. CSX

shares slipped 7.70% to $33.81 in pre-market trading after falling 0.38% on Thursday. SINA

fell 4.47% to $39.98 in pre-market trading after the China Internet company offered a Q4 revenue forecast below Wall Street's expectations. Stifel Nicolaus downgraded Sina from Buy to Hold, according to Bloomberg. Applied Materials

shares declined 2.21% to $22.12 in pre-market trading after the company reported in-line earnings for the fiscal fourth quarter and issued a weak outlook for the current quarter.