Why Portola Pharmaceuticals Inc. Stock Swooned

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 Portola Pharmaceuticals , a clinical-stage biopharmaceutical focused on developing therapies to combat thrombosis and other hematologic disorders, dipped 10% today after the company announced a collaboration with Daiichi Sankyo .

So what: According to a midday press release, Portola has entered into a second collaborative phase 3 agreement with Daiichi Sankyo to utilize andexanet alfa, its investigational Factor Xa inhibitor antidote, and Daiichi's Factor Xa inhibitor edoxaban. These studies, which will be known as ANNEXA, are scheduled to begin next year. This collaboration is considered nonexclusive, with Portola receiving an up-front payment, as well as additional development and regulatory milestone payments. Portola will maintain full worldwide rights to its Factor Xa inhibitor antidote.

Now what: Generally speaking, today's announcement is good news, but there some factors to consider. For one, a nonexclusive agreement allows Portola to collaborate with all Factor Xa inhibitors, but it also doesn't lock in a partner that clinical-stage biotech investors would love to see. In addition, since receiving the breakthrough therapy designation, Portola has been on fire; a cooling off period of shareholder profit-taking was expected. Lastly, a lack of definitive up-front payment and royalty figures might be upsetting existing shareholders who are left to ponder how lucrative its nonexclusive partnership with Daiichi Sankyo really is. Ultimately, I believe Portola is worth adding to your watchlist, but with a valuation north of $1 billion and no FDA-approved therapies as of yet, I'm certainly not a buyer here.

Portola may offer plenty of potential, but this stock that Warren Buffett recently bought nearly 9 million shares of might leave it in the dust! 
Imagine a company that rents a very specific and valuable piece of machinery for $41,000 per hour (That's almost as much as the average American makes in a year!). And Warren Buffett is so confident in this company's can't-live-without-it business model, he just loaded up on 8.8 million shares. An exclusive, brand-new Motley Fool report details this company that already has over 50% market share. Just click HERE to discover more about this industry-leading stock... and join Buffett in his quest for a veritable landslide of profits!

The article Why Portola Pharmaceuticals Inc. Stock Swooned originally appeared on Fool.com.

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.The Motley Fool has no position in any of the stocks mentioned. Try any of our Foolish newsletter services free for 30 days. We Fools don't 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 - 2014 The Motley Fool, LLC. All rights reserved. The Motley Fool has a disclosure policy.

Read Full Story