Wall Street's main indexes opened higher Tuesday, as cautious investors awaited the day's Big Tech earnings and labor numbers and hoped for clues on the timing of interest-rate cuts in this week's U.S. policy decision.

The Dow Jones Industrial Average rose 82.2 points, or 0.20%, at the open to 40,622.13. The S&P 500 rose 15.2 points, or 0.28%, at the open to 5,478.73​, while the Nasdaq Composite rose 53.9 points, or 0.31%, to 17,424.1 at the opening bell.