In the following video, Fool contributor Matt Thalman discusses three stocks he has on his watchlist, as well as a different metric for each one that he believes will tell him whether it's time to buy, sell, or continue to hold. With Boeing (NYSE:BA) Matt believes investors should be watching the dollar value and per-plane number of sales and compare the results against Airbus and smaller aircraft manufacturers. When it comes to Netflix (NASDAQ:NFLX), he says, investors need to watch how much content is being sold on a per-hour price and how much comes from Netflix. Lastly, with home Home Depot (NYSE:HD), Matt says we should watch the number of underwater homes in the United States.

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Fool contributor Matt Thalman has no position in any stocks mentioned. Check back Monday through Friday as Matt explains what caused the Dow's winners and losers of the day, and every Saturday for a weekly recap. Follow Matt on Twitter: @mthalman5513

The Motley Fool recommends Home Depot and Netflix and owns shares of Netflix. 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.