Benzinga's Top Pre-Market Losers

ISTA Pharmaceuticals Inc ISTA moved down 8.92% to $7.25 in the pre-market session. Valeant Pharmaceuticals International Inc VRX has withdrawn its offer to buy ISTA Pharmaceuticals for $7.50 per share in cash. Siliconware Precision Industries Co Ltd SPIL shares fell 8.32% to $5.006 in the pre-market trading. SPIL's trailing-twelve-month ROA is 3.79%/ Sify Technologies Limited SIFY dipped 3.19% to $4.85 in the pre-market session. Sify reported Q3 revenue of INR 1.80 billion. Alpha Natural Resources Inc ANR dipped 3% to $21.00 in the pre-market session. ANR's trailing-twelve-month profit margin is 1.25%.