** S&P 500 energy index .SPNY down 2.2%, tracking decline in crude prices O/R
** Brent crude futures LCOc1 down 2.9% at $67.37/barrel, U.S. West Texas Intermediate crude futures CLc1 falls 2.99% to $62.70/barrel
** Oil prices down after investors gave more weight to International Energy Agency lowering its global oil demand forecast for 2026 against receding risk of U.S. attacks on Iran
** "It just ran out of steam," says Phil Flynn, senior analyst with the Price Futures Group
** "The market's doubling down on the lowering demand forecast"
** Top oil and gas firms Exxon XOM.N slips 2.6% and Chevron CVX.N down 1.8%
** Valero Energy Corp VLO.N, Occidental Petroleum OXY.N Diamondback Energy FANG.O and Devon Energy Corp DVN.N down between 6.1% and 3.4%, among top percentage losers on energy index
** Oilfield services company Baker Hughes BKR.O slips marginally and its peer Halliburton HAL.N down 3.5%
** Refiners: Phillips 66 PSX.N down 2.6% and Marathon Petroleum MPC.N falls 4%
(Reporting by Varun Sahay in Bengaluru)
((Varun.sahay@thomsonreuters.com))