In this video, David Williamson describes how Achillion Pharmaceuticals (ACHN) may challenge Gilead's (GILD 0.23%) dominance in the Hepatitis C drug market. Achillion is concluding phase 2 clinical trials of its oral interferon medication, and so far, things are looking good. If successful in phase 3 trials, Achillion could directly challenge Gilead's interferon medication. For investors, the success of Achillion's drug is attractive, but the potential for Achillion to be a takeover target is even more enticing. The company has a market cap of around $575 million and could easily be bought out by the likes of Bristol-Myers Squibb.

Check out the video for more details.