By Tanya Agrawal
(Reuters) - U.S. stock index futures fell on Wednesday as corporate earnings disappointed, especially from APPLE (AAPL.NQ)
* Apple shares slumped 6.2 percent to $122.61 in premarket trading, a day after the iPhone maker's revenue forecast for the fourth quarter fell below expectations.
* Disappointing earnings from other technology giants such as Microsoft
* Microsoft fell 3.9 percent to $45.45 after reporting its biggest quarterly loss, as the company wrote down its Nokia phone business and demand fell for its Windows operating system.
* Yahoo
* U.S. stocks had closed lower on Tuesday as results from IBM
* While markets are near record highs, June-quarter earnings of S&P 500 companies are expected to dip 1.9 percent, according to Thomson Reuters data, well below the 5.9 percent gain forecast on Jan. 1.
* Adding to the weakness, commodities resumed their downward spiral with gold and oil prices under pressure.
* Dow components Coca Cola
* Data expected on Wednesday includes existing home sales data. Home sales, which reached a 5-1/2-year high in May, are expected to have risen 1.2 percent at an annual rate of 5.40 million units in June. The data is expected at 10 a.m. ET (1400 GMT).
* GoPro
Futures snapshot at 7:16 a.m. ET:
* S&P 500 e-minis
* Nasdaq 100 e-minis
* Dow e-minis <1YMc1> were down 71 points, or 0.4 percent, with 9,709 contracts changing hands.
(Editing by Don Sebastian)