June 15 (Reuters) - Wall Street's main indexes opened higher

on Monday after Washington and Tehran reached a preliminary

agreement to end the Middle East conflict and reopen the Strait

of Hormuz, leading to a sharp decline in crude prices.

The Dow Jones Industrial Average rose 162.3 points,

or 0.32%, at the open to 51364.55. The S&P 500 rose 85.3

points, or 1.15%, at the open to 7516.75​, while the Nasdaq

Composite rose 558.4 points, or 2.16%, to 26447.23 at

the opening bell.