Blue-chip stocks offer more stability than corporations that are oriented toward growth. Many of these firms pay dividends and reward shareholders with stock buybacks. Also, blue-chip stocks appeal to investors who want to buy and hold solid companies. While you can time the market, it is often time in the market that leads to the highest returns. With that in mind, these are some of the top blue-chip stocks to consider in May.Walmart (WMT)Source: Jonathan Weiss / Shutterstock.comWalmart (NYSE:WMT) has esta ...