P123 CEEFAX 123 Sun 22 Dec 16:41/57       WALL STREET Close Close: Down 0.92 at 1.543.00 Stock prices finished mixed after an early advance faded in the last hour of trading. Advances outpaced declines bz nearly 2-to-1, with volume at 170.27 million shares - well up on previous sessions. * US real GNP rose at an annual rate of 3.2pc in the fourth quarter. Analysts said traders generally took the GNP figures as encouraging. CITZNEWS Index 120