Sept. 30 (Bloomberg) -- Pharmasset Inc. shares rose to the highest in more than four years after the drugmaker’s PSI-7977 medication was shown effective at treating hepatitis C.
Pharmasset, based in Princeton, N.J., gained $5.07, or 6.6 percent, to $82.37 at 4 p.m. in Nasdaq Stock Market trading. It is the highest share price since April 2007.
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