US STOCKS-Futures edge higher, on track for weekly gain
* Markets on track for positive week, indexes near records
* Trading volume likely to be light after holiday
* Rise in oil prices could boost energy sector
* Futures up: Dow 27 pts, S&P 2.75 pts, Nasdaq 11.25 pts
By Ryan Vlastelica
NEW YORK, Dec 26 (Reuters) - U.S. stock index futures edged higher on Friday, putting major indexes on track for a second straight weekly advance, though moves were likely to be slight with few market catalysts and many traders extending their Christmas holiday.
* Wall Street has rallied of late, with both the Dow and S&P 500 touching intraday records in Wednesday's shortened session and the Dow eking out a sixth straight daily advance. The S&P 500 has risen 5.5 percent over the past six sessions and notched 51 record closes this year, the most since 1995 and the fourth best ever in terms of record closes.
* The gains have been sparked by central bank assurances about its intentions regarding interest rate policy and still strong economic data. While no major economic indicators were due Friday, the market's upward bias looked set to continue. Low volume could increase volatility.
* Market activity was quiet Friday morning, with one of the most actively traded names on the New York Stock Exchange, Peabody Energy Corp, trading only 3,100 shares by 7:12 a.m. EST (1212 GMT). The stock was flat at $7.71. Continuación...