Benzinga's Top Pre-Market Losers

Diamond Foods DMND dipped 6.79% to $21.95 on Q4 results. Universal Display OLED dipped 6.37% to $29.99 in the pre-market session after Canaccord Genuity downgraded the stock from Hold to Sell. Aixtron SE AIXG shares dropped 4.78% to $16.15 in pre-market trading after Canaccord Genuity downgraded the stock from Hold to Sell. Arena Pharmaceuticals ARNA shares fell 2.66% to $5.13 in the pre-market trading. Arena's PEG ratio is -1.51.