Major U.S. stock-indexes extended losses on Wednesday, the last trading day of August, as lower oil prices weighed on energy stocks.

Oil prices fell more 3% after U.S. government data showed a large unexpected weekly build in U.S. crude and distillate stockpiles and a smaller-than-expected draw in gasoline. Oil was also pressured by the dollar index, trading at a three-week high.

Most of all Dow stocks in negative area (27 of 30). Top gainer - Apple Inc. (AAPL, +0.41%). Top loser - Chevron Corporation (CVX, -1.56%).

Most of S&P sectors also in negative area. Top gainer - Conglomerates (+0.3%). Top loser - Basic Materials (-1.6%).

At the moment:

Dow 18347.00 -97.00 -0.53%

S&P 500 2162.50 -12.75 -0.59%

Nasdaq 100 4761.00 -15.00 -0.31%

Oil 44.78 -1.57 -3.39%

Gold 1311.90 -4.60 -0.35%

U.S. 10yr 1.56 -0.01