The SET index was up by 0.85 per cent to 839.13 at midday on Thursday.
The trading value was at Bt10.02 billion.
PTT was up by 1.2 per cent to Bt338, while Banpu was down by 1.64 per cent to Bt480. PTT Aromatics and Refining rose 1.2 per cent to Bt41.75, while Kasikornbank fell 1.14 per cent to Bt86.5. - The Nation