
At 4.37pm, the SET Index gained 6.40 points or 0.60 per cent to 1,081.11 points. The gain is in line with regional markets.
At the close, the index went up 9.26 points or 0.86 per cent to 1,083.97 points, on turnover of Bt25.9 billion. Foreign investors' sale exceeded purchase by Bt623.5 million today, but they remained net-buyers this month with the accumulated net-buy position of Bt2.97 billion.
Optimism in the country's economic growth this year also attracted investment into the stock and bond markets. Inflows today boosted the Thai baht 31 per US dollar.
Late Monday, all European Union countries except Britain and the Czech Republic agreed to sign a new treaty designed to stop overspending in the eurozone and put an end to the bloc's crippling debt crisis, while EU leaders also pledged to stimulate growth and employment.
Europe's main stock markets advanced at the start of trading on Tuesday, after most European leaders agreed on a treaty aimed at ending huge deficits.