Benzinga's Top Pre-Market Losers

Covidien plc

dipped 7.54% to $58.10 in the pre-market session after the company completed the spin-off of its Pharmaceuticals business. BlackBerry

shares fell 4.78% to $9.96 in the pre-market trading. Deutsche Bank downgraded BlackBerry from “hold” to “sell.” Nabors Industries

shares dropped 4.44% to $14.63 in pre-market trading. Nabors' trailing-twelve-month profit margin is 1.93%. Danaher

dipped 2.67% to $61.61 in the pre-market session. Danaher has a dividend yield of 0.20%.