U.S. stock index futures fell on Wednesday a day after the Dow posted its seventh consecutive advance in the year's lowest overall volume, possibly signaling the rally could be wilting.

* Investors' attention will turn to Washington as Federal Reserve Chairman Ben Bernanke testifies before the House Budget Committee on the state of the U.S. economy.

* Earnings continue to be in the spotlight with two Dow components, Coca Cola Co and Cisco Systems Inc , expected to post results later Wednesday.

* Blue-chip Walt Disney Co reported after the bell on Tuesday a better-than-expected 54 percent surge in profit. Its shares jumped 3.7 percent in light premarket trading.

* S&P 500 futures fell 5 points and were below fair value, a formula that evaluates pricing by taking into account interest rates, dividends and time to expiration on the contract. Dow Jones industrial average futures dropped 23 points and Nasdaq 100 futures lost 7.25 points.

* The London Stock Exchange is to buy the Toronto Stock Exchange operator TMX in an all-share deal to create a major center for trading in mining shares if likely political opposition in Canada can be overcome.

* On Tuesday U.S. stocks hit fresh multiyear highs after strong sales by McDonald's boosted optimism on consumer spending.

(Reporting by Rodrigo Campos; Editing by Kenneth Barry)