While it's impossible to predict the future or even identify market tops, there are a number of troubling signs that suggest stocks are too high. I discuss three of these in the video below, including the absolute level of the S&P 500 (^GSPC +0.59%), valuation expansion over the last year, and the overexuberance of investors in the recent IPOs of Potbelly (PBPB +0.00%) and Noodles & Co. (NDLS +2.97%).
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While it's impossible to predict the future or even identify market tops, there are nevertheless a number of troubling signs which suggest that stocks are too high.
