Crude-oil futures fell in Asian trade Thursday after a surprise buildup in U.S. oil stockpiles and persistent oversupply concerns. Nymex oil futures edged closer to the $40 a barrel mark, after dropping to fresh six-year lows in the previous session, and analysts say a breach of this support level could pressure oil prices further. On the New York Mercantile Exchange, light, sweet crude futures for delivery in September traded at $40.50 a barrel at 0332 GMT, down $0.30 in the Globex electronic session. October Brent crude on London’s ICE Futures exchange fell $0.28 to $46.88 a barrel. Nymex crude lost 4.3% in the last trading session, settling at the lowest in since March 2, 2009. Brent crude lost 3.4% in the last session and has been down for four of the past five sessions. U.S. oil prices in particular are under pressure after a surprise 2.6 million-barrel increase in […]