(Reuters) - Wall Street's main indexes opened lower on Tuesday as caution prevailed ahead of highly anticipated results from Nvidia and crucial economic data expected later in the week.

The Dow Jones Industrial Average fell 54.24 points, or 0.13%, at the open to 41,186.28. The S&P 500 opened lower by 13.95 points, or 0.25%, at 5,602.89, while the Nasdaq Composite dropped 70.24 points, or 0.40%, to 17,655.52 at the opening bell.