Even Japanese exporters, who have been recent big winners from the sagging yen, lost ground as investors pocketed profits. Tokyo's Nikkei Stock Average lost 44.39 points to 10,863.55, although this was well above its earlier low of 10,555. Sony and other electronics leaders, which had led a four-day bull run, slipped but the damage was limited by a firmer showing from the carmakers following record half-year profits from Nissan. The company's stock gained almost 4%.