Oct 21 (Reuters) - Wall Street's main indexes edged

lower on Monday, pausing after gains in the previous week ahead

of major earnings reports that could influence whether indexes

retreat from record highs or sustain the momentum.

The Dow Jones Industrial Average fell 53.7 points, or

0.12%, at the open to 43,222.21. The S&P 500 fell 6.9

points, or 0.12%, at the open to 5,857.82​, while the Nasdaq

Composite dropped 33.1 points, or 0.18%, to 18,456.481

at the opening bell.