Brent oil for October delivery traded higher at 86.35 US dollars a barrel on Monday, from 83.40 dollars late on Friday. The euro stood lower at 1.1549 euro against 1.1560 dollars. The Dow Jones Industrial Average was slightly higher, the S&P 500 index slightly lower, and the Nasdaq Composite was down 0.3%. The Haifa, Israel-based trading platform operator said pretax profit rose 0.8% to 183.2 million dollars in the six months ended June 30 from 181.8 million dollars a year earlier. Revenue jumped 12% to 462.9 million dollars from 415.1 million dollars, a three-year record high for a six-month period.