U.S. stocks dipped on Tuesday as investors gear up for what Federal Reserve chair Jerome Powell will say about the path of interest rates at a key conference later in the week.

Just like a small group of wealthy households are separating from the rest of the country, a handful of Big Tech companies are dominating the U.S. stock market.

Wall Street held near its records in premarket trading Tuesday as traders digested the latest corporate earnings reports while waiting for fresh cues about interest rates from the Federal Reserve. Futures for the S&P 500 and Nasdaq were each off about 0.