Benzinga's Top Pre-Market Losers

Geron (NASDAQ: GERN) shares dropped 18.92% to $1.20 in pre-market trading. Geron announced its plans to end development of GRN1005, an experimental brain cancer drug. It also announced its plans to cut 43 jobs

Vail Resorts (NYSE: MTN) shares fell 7.79% to $51.49 in the pre-market trading. Vail Resorts reported a wider first-quarter loss.

MetroPCS Communications (NYSE: PCS) dipped 7.15% to $10.00 in the pre-market session. According to Reuters, Sprint Nextel (NYSE: S) is not likely to make a counteroffer for MetroPCS.

Pep Boys-Manny Moe & Jack (NYSE: PBY) dipped 6.37% to $10.00 in the pre-market session. Pep Boys posted a loss in the fiscal third quarter.

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