** Shares of U.S. natural gas companies up, tracking a rise in natgas futures NGA/
** U.S. natural gas futures NGc1 up 0.8% at $3.236 per million British thermal units (mmBtu), putting the contract on track for its highest close since February 13 for a second day in a row
** Natgas prices gain following a rise in global energy prices due to the Iran war and as cooler weather boosted heating demand this week by more than previously expected
** Natgas companies: Cheniere Energy LNG.N, Venture Global VG.N, EQT Corp EQT.N and CNX Resources Corp CNX.N climb between ~1% and 2.1%
** Natgas ETFs: United States Natural Gas Fund UNG.P up 1.8%, and ProShares Ultra Bloomberg Natural Gas BOIL.P rise 3.3%
(Reporting by Varun Sahay in Bengaluru)
((Varun.sahay@thomsonreuters.com))