Major U.S. stock-indexes rose on Wednesday, helped by gains in technology and energy stocks, ahead of the Federal Reserve's decision later in the day. The Fed is scheduled to release, followed by Chair Janet Yellen's press conference. While the chances of a hike are marginal this time, investors will comb the central bank's statements for clues about a December hike.

Most of Dow stocks in positive area (21 of 30). Top gainer - Caterpillar Inc. (CAT, +1.11%). Top loser - The Walt Disney Company (DIS, -0.97%).

Most of S&P sectors also in positive area. Top gainer - Basic Materials (+1.4%). Top loser - Conglomerates (-0.4%).

At the moment:

Dow 18088.00 +41.00 +0.23%

S&P 500 2137.75 +6.75 +0.32%

Nasdaq 100 4805.75 +7.25 +0.15%

Oil 45.20 +1.15 +2.61%

Gold 1330.50 +12.30 +0.93%

U.S. 10yr 1.71 +0.02