** Stocks of Indian oil marketing companies BPCL BPCL.NS, HPCL HPCL.NS, Indian Oil Corporation IOC.NS drop 5.9%, 6.9% and 7%, respectively
** Nifty oil and gas index .NIFOILGAS down 2.7%, energy index .NIFTYENR falls 2.1%; benchmark Nifty 50 .NSEI loses 2.8%
** .NIFOILGAS sheds 6.6% since the U.S.-Israel first struck Iran vs .NIFTYENR's 2.8% gain, .NSEI's 6.4% decline
** Mideast war drives Brent crude up 26.4% to $117.16/barrel to a near four-year high
** Citi identifies oil marketing firms as most vulnerable, expects marketing losses to widen significantly
** UBS downgrades IOC and BPCL to "neutral" and BPCL to "sell" from "buy"
** Adds, frims are "negatively leveraged" to the crude spike as they sell more diesel and gasoline than they produce
(Reporting by Mridula Kumar in Bengaluru)
((Mridula.Kumar@thomsonreuters.com;))