Benzinga's Top Pre-Market Gainers

Supernus Pharmaceuticals SUPN moved up 26.51% to $8.40 in the pre-market session after the company received final approval from the FDA for Trokendi XR. Partner Communications Company PTNR soared 3.75% to $8.02 in the pre-market trading. Partner Communications is expected to report its reviewed financial results for the second quarter on August 28, 2013. Chesapeake Energy CHK surged 3% to $25.75 in the pre-market session after Carl Icahn lifted his stake in Chesapeake to 9.98% from 8.98%. MannKind MNKD shares gained 2.77% to $5.93 in the pre-market session. MannKind's PEG ratio is 0.06.