Benzinga's Top #PreMarket Losers

Best Buy Co (NYSE: BBY) shares fell 27.20% to $27.35 in the pre-market trading after the company reported a 0.8% drop in its comparable store sales for the nine weeks ended January 4.

Amarin Corporation plc (NASDAQ: AMRN) shares dropped 9.58% to $2.17 in pre-market trading after the company reported that the US Food and Drug Administration delayed decision on Vascepa trial design.

MediciNova (NASDAQ: MNOV) dipped 6.69% to $2.51 in the pre-market session after falling 5.28% on Wednesday.

CSX (NYSE: CSX) dipped 4.21% to $28.00 after the company reported a 5% drop in its fourth-quarter profit. Analysts at Stifel Nicolaus downgraded CSX from Buy to Hold.