The following video is from Monday's Investor Beat, in which host Chris Hill and analysts Jason Moser and Matt Argersinger dissect the hardest-hitting investing stories of the day.

Shares of Sprint Nextel rose today on news that DISH Network has proposed to buy Sprint for $25.5 billion. What would the deal mean for the competitive landscape? Who would be the big winners? This story, plus what was behind the four biggest moves on the market today, and two stocks we'll be watching closely this week.