The Index stood at 1,504.81 points on turnover of Bt58.69 billion.
Tisco Securities said in a research note that the market could move sideways up or down ahead of the meetings, but the Index is not expected to fall below 1,495 points this week.
As of July 25, foreigners had remained net buyers of Thai shares for 11 consecutive days. Month to date, their net-buys amounted to Bt33.56 billion.