Shares of Achillion Pharmaceuticals jumped 22 percent after the developer announced that preliminary data from an early-stage trial demonstrated that its hepatitis C drug was effective on a once-daily dose using a lower dosage. ACH-1625 spurred meaningful drops in virus levels after five days of treatment. "We remain very encouraged by these compelling results and look forward to advancing the drug into Phase 2 studies in the coming months," Chief Executive Michael Kishbauch said in a statement. Achillion release | Report