Benzinga's Top #PreMarket Losers

Genocea Biosciences Inc GNCA fell 31.40 percent to $4.96 in pre-market trading following announcement of suspension of development of GEN-004. Morgan Stanley MS shares fell 5.19 percent to $32.18 in pre-market trading after the bank reported weaker-than-expected earnings for the third quarter. Transocean LTD RIG shares tumbled 3.33 percent to $15.38 in pre-market trading. Transocean is expected to report Q3 earnings on November 4, 2015. Yandex NV YNDX shares declined 2.57 percent to $13.25 in pre-market trading. Yandex shares have dipped 48.50 percent over the past 52 weeks, while the S&P 500 index has gained 6.78 percent in the same period. Cempra Inc CEMP shares dipped 2.02 percent to $18.90 in pre-market trading after falling 27.97 percent on Friday.