US STOCKS SNAPSHOT-Wall St opens higher on Mideast de-escalation hopes; monthly losses loom

March 31 (Reuters) - Wall Street's main indexes opened higher on Tuesday, as markets welcomed a report signaling potential de-escalation in the Middle East conflict that has set the S&P 500 and the Dow on track for their biggest monthly decline in years.

The Dow Jones Industrial Average .DJI rose 325.6 points, or 0.72%, at the open to 45,541.76. The S&P 500 .SPX rose 52.2 points, or 0.82%, at the open to 6,395.88​, while the Nasdaq Composite .IXIC rose 269.7 points, or 1.30%, to 21,064.334 at the opening bell.