I'm really interested to see if Roche comes back to the table after Illumina (NASDAQ:ILMN) rejected their $6.7 billion offer. Illumina has an amazing track record of revenue growth in an exciting market as a maker of DNA sequencers. While the company is profitable, these acquisition are far more about the technology and future growth, than a reasonable multiple on earnings. Roche has a history of eventually getting what they want so I wouldn't be surprised if they resurface after a little time has passed, particularly if Illumina doesn't receive a higher bid in the interim.
Disclosure: I have no positions in any stocks mentioned, and no plans to initiate any positions within the next 72 hours.