Accra, Sept. 29, GNA - The main index of the Ghana Stock Exchange (GSE), the All-Share Index, slipped in trading on Tuesday, losing 119.94 points to close at 6,291.94 from 6,411.88 points. Change for the year closed the session at -39.68 per cent. Traded volumes, however, picked up at 102,500 shares from 24,300 shares on the back of ETI, which sold 65,100 shares. ETI lost GH¢0.01 at GH¢0.20. Market capitalisation dipped to close at GH¢15,913.94 million from GH¢16,001.27.