New Delhi, June 3 -- Wall Street stock indices pulled back on Wednesday as intensifying Middle East conflict drove oil prices upward, prompting investors to lock in profits following a historic run of record highs.

At 10:03 a.m. ET, the Dow Jones Industrial Average fell 278.51 points, or 0.54%, to 51,029.28, the S&P 500 lost 27.18 points, or 0.36%, to 7,582.48 and the Nasdaq Composite lost 134.41 points, or 0.50%, to 26,959.49.

At the open, the Dow Jones Industrial Average fell 86.9 points, or 0.17%, to 51,220.92. The S&P 500 fell 4.5 points, or 0.06%, to 7,605.31​, while the Nasdaq Composite dropped 1.1 points, to 27,092.845.

Fighting escalated sharply mid-week after an Iranian drone attack struck a passenger terminal at Kuwait ...