Benzinga's Top Pre-Market Losers

Apollo Group Inc APOL moved down 4.96% to $48.85 in the pre-market session. APOL's PEG ratio is 2.33. Southwestern Energy Company SWN shares fell 4.08% to $33.89 in the pre-market trading. SWN reported downbeat profit. BlackRock Inc BLK dipped 1.88% to $194.00 in the pre-market session. BLK shares have dropped 1.85% over the past 52 weeks, while the S&P 500 index has gained 4.69% in the same period. CSX Corporation CSX dipped 1.51% to $21.51 in the pre-market session. CSX's trailing-twelve-month ROA is 7.42%.