Benzinga's Top #PreMarket Losers

Chipotle Mexican Grill, Inc. CMG shares declined 2.17 percent to $523.36 in pre-market trading. Sterne Agee CRT downgraded Chipotle Mexican Grillfrom Buy to Neutral. Haemonetics Corporation HAE shares fell 2.10 percent to $32.63 in pre-market trading. Raymond James downgraded Haemonetics from Market Perform to Underperform. Allergan PLC AGN fell 1.81 percent to $306.79 in pre-market trading. Pfizer Inc. PFE agreed to buy Allergan in a $160 billion deal. Tyson Foods, Inc. TSN shares tumbled 1.52 percent to $43.00 in pre-market trading. Tyson Foods reported weaker-than-expected earnings for its fiscal fourth quarter, but the company's sales exceeded analysts' estimates. Kinder Morgan Inc KMI shares dipped 0.86 percent to $23.19 in pre-market trading after falling 1.12 percent on Friday.