When deciding whether to buy, sell, or hold a stock, investors often rely on analyst recommendations. Media reports about rating changes by these brokerage-firm-employed (or sell-side) analysts often influence a stock's price, but are they really important?Let's take a look at what these Wall Street heavyweights have to say about Core & Main (CNM) before we discuss the reliability of brokerage recommendations and how to use them to your advantage.Core & Main currently has an average brokerage recommendation ...