US stocks slipped on Tuesday as investors weighed early reports on a marquee earnings day, with Big Tech results in focus.

The benchmark S&P 500 (^GSPC) and Dow Jones Industrial Average (^DJI) dropped about 0.2% and 0.1%, respectively, with the tech-heavy Nasdaq Composite (^IXIC) finishing the session just below the flatline.

Markets have been digesting a rotation away from the megacaps that have fueled this year's rally. Small caps have benefitted as a result with the Russell 2000 (^RUT) up 3% over the past two days.

The wait is on for Alphabet (GOOGL, GOOG) and Tesla (TSLA) results due after the bell, with the market watching for signs of continuing growth from the first pair of the "Magnificent Seven" behemoths.

Earlier in the trading session, investors assessed earnings from General Motors (GM) and Coca-Cola (KO) with shares closing down about 6% for GM while Coca-Cola finished the day flat.