Is today’s stock market priced too high? Economist Brian Wesbury, Chief Economist at First Trust Advisors, has been warning that the market is overvalued by roughly 40% based on his fair value model of the S&P 500.

In this week’s Fastest 4 Minutes in Finance, Scott Inman breaks down Wesbury’s analysis:

Bottom line: Expect volatility in the coming months, but remember—the key is to stay invested for long-term growth while working with a financial advisor to make smart adjustments along the way.