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Why ViroPharma Shares Skyrocketed

Sean Williams
September 13, 2013

Although we don't believe in timing the market or panicking over market movements, we do like to keep an eye on big changes -- just in case they're material to our investing thesis.

What: Shares of ViroPharma Inc. (NASDAQ: VPHM), a biopharmaceutical company that develops and commercializes therapies to treat serious and often rare diseases, jumped as much as 30% after a report from Bloomberg hinted that there may be interest from two suitors in acquiring ViroPharma.

So what: Accordin