Benzinga's Top Pre-Market Losers

Meadwestvaco Corporation

moved down 7.84% to $28.46 in the pre-market session. MWV's trailing-twelve-month profit margin is 4.06%. Leap Wireless International Inc

shares fell 5.21% to $10 in the pre-market trading. Leap Wireless reported that its 2012 annual meeting of stockholders is scheduled to be held on May 17. Zynga Inc

dipped 3.00% to $14.25 in the pre-market session. Analysts at JP Morgan downgraded Zynga from “overweight” to “neutral.” CF Industries Holdings Inc

dipped 2.53% to $183.49 in the pre-market session. Analysts at Citigroup downgraded CF Industries from “buy” to “neutral.”