After trending higher over the past several sessions, stocks may show a lack of direction in early trading on Friday. The major index futures are currently pointing to a roughly flat open for the , with the S&P 500 futures up by less than a tenth of a percent.Many traders are likely to remain away from their desks following the Christmas Day holiday on Thursday, leading to below average trading activity.Traders may also be reluctant to make significant moves following the recent upward trend, which lifted ...