Benzinga's Top Pre-Market Gainers

Medco Health Solutions Inc MHS shares advanced 18.64% to $66.18 in the pre-market session. MHS reported its quarterly net income at $342.8 million. Express Scripts Inc ESRX announced its plans to acquire Medco for $71.36 per share in cash and stock, or $29.1 billion. Morgan Stanley MS shares advanced 5.89% to $23.00 in the pre-market session. MS reported upbeat Q2 results. Express Scripts Inc ESRX climbed 3.94% to $54.61 in the pre-market session. ESRX announced its plans to acquire Medco for $71.36 per share in cash and stock, or $29.1 billion. ESRX reported a 15% rise in its Q2 net profit. XL Group plc XL jumped 2.26% to $21.74 in the pre-market session. XL has a dividend yield of 2.10%.