Why Hyperion Therapeutics Shares Shot Higher

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 Hyperion Therapeutics , a biopharmaceutical company focused on treatments for orphan diseases and hepatology, rose as much as 10% after receiving orphan drug exclusivity status for Ravicti from the Food and Drug Administration, and exercising an option to acquire two additional urea cycle drugs from Valeant Pharmaceuticals .

So what: Ravicti, Hyperion's urea cycle disorder drug that was approved in February, will now get a seven-year period of exclusivity in treating the rare disease. This secures Hyperion's revenue stream by making sure competitors won't be able to swoop in a few years from now with similar products.

In addition to this news, Hyperion exercised an option to acquire Buphenyl and Ammonul from Valeant. If Valeant chooses to keep Ammonul (it has 20 days to decide) it must pay Hyperion $13 million. If Valeant chooses to sell the drug, Hyperion owes Valeant $22 million.

Now what: To me it seemed like a foregone conclusion that Ravicti was going to eventually gain orphan drug approval. While this will certainly protect Hyperion's UCD drug, I'm not sure $100 million in peak sales estimates in the U.S. is enough to justify the company's $358 million market value as of this writing. I'll be certainly curious to see what Valeant does with Ammonul, but I don't think it's a big enough game changer to sway my opinion that Hyperion's valuation is a bit frothy.

Craving more input? Start by adding Hyperion Therapeutics to your free and personalized Watchlist so you can keep up on the latest news with the company.

While you can certainly make huge gains in biotechs like Hyperion, the best investing approach is to choose great companies and stick with them for the long term. The Motley Fool's free report "3 Stocks That Will Help You Retire Rich" names stocks that could help you build long-term wealth and retire well, along with some winning wealth-building strategies that every investor should be aware of. Click here now to keep reading.

The article Why Hyperion Therapeutics Shares Shot Higher originally appeared on Fool.com.

Motley Fool contributor Sean Williams has no material interest in any companies mentioned in this article. You can follow him on CAPS under the screen name TMFUltraLong, track every pick he makes under the screen name TrackUltraLong, and check him out on Twitter, where he goes by the handle @TMFUltraLong.Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.

Copyright © 1995 - 2013 The Motley Fool, LLC. All rights reserved. The Motley Fool has a disclosure policy.

Read Full Story