The B2B Internet HOLDRs ( BHH) was the best performer among exchange-traded funds Wednesday as holding CheckFree ( CKFR) was adding 5.1%. A day earlier, CheckFree beat estimates for the fiscal second quarter. The ETF was up 13 cents, or 5.9%, to $2.33.

ETFs tracking homebuilders were also among the best performers of the session. The Federal Reserve said in its policy statement that "some tentative signs of stabilization have appeared in the housing market."

The iShares Dow Jones U.S. Home Construction ( ITB) ETF was higher by 4.5% at $42.58. The SPDR Homebuilders ( XHB) ETF was adding 3.8% to $38.31.

Bundled securities tracking energy were also rising as crude oil gained $1.17 to $58.14 a barrel. Earlier, the Energy Department released its weekly inventory report, which showed that crude stores increased by 2.7 million barrels last week, distillate supplies rose by 2.6 barrels and gasoline stocks climbed by 3.8 million barrels.

The iPath Goldman Sachs Crude Oil ( OIL) ETF was recently up 2.4% to $35.73. The United States Oil ( USO) ETF was recently adding 1.9% to $48.28. The Oil Services HOLDRs ( OIH) ETF was higher by 1.2% to $136.95.

The SPDR Semiconductor ( XSD) ETF was one of few losers Wednesday. Holding International Rectifier ( IRF) was losing 1%. The ETF lost 18 cents, or 0.4%, to $49.08.

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