• The Thai stock market declined almost throughout the week amid selling pressure from foreign investors.
The SET Index began to decline at the beginning of the week amid foreign investors’ sell-offs, in line with other regional bourses, due to concerns over the prolonged conflicts in the Middle East. Most recently, reports indicated that the US had announced economic sanctions against Iran and warned that countries continuing to do business with Iran could also face consequences. This triggered broad-based selling across all sectors, particularly stocks of electronic components manufacturers.
The SET Index briefly recovered in the middle of the week, supported by gains in banking stocks, likely benefiting from speculative buying ahead of dividend payment announcement. However, the SET Index fell again during the remainder of the week amid continued foreign investor selling, led by energy stocks after global oil prices declined following reports that Iran and Oman were in talks to open a temporary maritime route through the Strait of Hormuz. The SET Index subsequently fell below the 1,600-point level towards the end of the week as additional selling pressure emerged in selected large-cap stocks. Meanwhile, the market was also awaiting remarks from the Fed Chair at the Jackson Hole meeting later in the week.
• On Friday, August 28, 2026, the SET closed at 1,588.22 points, down 1.58 percent over-week. The average daily trading value was THB64,812.44 million, down 20.92 percent over-week. The mai closed at 229.06 points, down 0.53 percent over-week.
• During August 31 – September 4, 2026, KSecurities expects the SET to have support at 1,575 and 1,550 points, but resistance at 1,605 and 1,630 points, respectively. KResearch advises investors to watch key factors, including developments in the Middle East, and foreign capital flows. US economic data that warrants close monitoring includes August Manufacturing and Services ISM/PMI, Non-farm Payrolls and Unemployment Rate, plus weekly jobless claims. Other important overseas economic indicators to monitor include August Manufacturing and Services PMI of China, Japan, Eurozone and UK, plus Eurozone’s August CPI and July PPI.