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

In today's installment, shares of Apple (AAPL -0.35%) hit yet another 52-week low, and Warren Buffett releases the annual letter to Berkshire Hathaway(BRK.A -0.76%) (BRK.B -0.69%) shareholders, and, as always, there are several sagely takeaways. Those stories plus the top market movers and two stocks we'll be watching closely this week.