US stocks (^DJI, ^IXIC, ^GSPC) open Tuesday lower as Nvidia (NVDA) shares dip ahead of the chipmaker's second quarter earnings report due out tomorrow, Wednesday, August 28.

Brad Smith, Madison Mills, and Jared Blikre monitor this morning's market moves, eyeing the volatility index (^VIX), 10-year Treasury yields (^TNX), and even trends in coffee prices (KC=F) in commodity markets.

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This post was written by Luke Carberry Mogan.