Aug 20 (Reuters) - Wall Street's main indexes opened

marginally lower on Tuesday, as investors refrained from risk

taking in the lead-up to the release of minutes from the Federal

Reserve's latest meet and Chair Jerome Powell's speech at

Jackson Hole later this week.

The Dow Jones Industrial Average fell 22.0 points, or

0.05%, at the open to 40,874.52. The S&P 500 fell 5.4

points, or 0.10%, at the open to 5,602.88​, while the Nasdaq

Composite dropped 27.7 points, or 0.15%, to 17,849.087

at the opening bell.

(Reporting by Shashwat Chauhan in Bengaluru; Editing by

Shinjini Ganguli)