The following video is from Monday's Investor Beat, in which host Alison Southwick and Motley Fool analysts Matt Koppenheffer and Matt Argersinger dissect the hardest-hitting investing stories of the day.

Biotech giant Amgen (NASDAQ:AMGN) announced today that it's acquiring Onyx Pharmaceuticals (UNKNOWN:UNKNOWN) for $10.4 billion. In our lead story on Investor Beat, our two Matts discuss the acquisition and look at whether M&A in general is good news for investors.