ViroPharma Shares Rise on Report of Drug Company Interest

ViroPharma Inc. (VPHM), the maker of a drug for a rare disease, rose the most in five months after a report that drug companies may be interested in buying the company.

The Exton, Pennsylvania-based biotechnology company gained 6.3 percent to $28.87 at the close in New York, the biggest single-day increase since Jan. 15. Reuters reported that ViroPharma is a potential acquisition target, citing unidentified sources familiar with the issue.

ViroPharma sells Cinryze, a drug for hereditary angioedema, a genetic disease that afflicts at least 6,000 people in the U.S. and can cause airway obstruction, according to a description on the company website. Sales of the drug were $327.1 million last year, representing 76 percent of the company’s $427.9 million 2012 revenue, according to data compiled by Bloomberg.

A spokeswoman for ViroPharma didn’t return a call asking for comment on the report.

Robert Langreth in New York at +1-212-617-1886 or;

To contact the reporter on this story: Robert Langreth in New York at

To contact the editor responsible for this story: Reg Gale at

Press spacebar to pause and continue. Press esc to stop.

Bloomberg reserves the right to remove comments but is under no obligation to do so, or to explain individual moderation decisions.

Please enable JavaScript to view the comments powered by Disqus.