(Reuters) - Wall Street's main indexes fell at the open on Monday, pressured by a rally in Treasury yields as investors dialed back bets on the scope of the Federal Reserve interest rate cuts this year.

The Dow Jones Industrial Average fell 63.2 points, or 0.15%, at the open to 42,289.51. The S&P 500 fell 13.3 points, or 0.23%, at the open to 5,737.8​, while the Nasdaq Composite dropped 57.7 points, or 0.32%, to 18,080.115.

(Reporting by Lisa Mattackal in Bengaluru; Editing by Shinjini Ganguli)