SET Index Declines following Large-Cap Selloffs, Investors Eye Mideast Conflicts and MSCI Rebalance

On Friday, Thailand’s SET Index closed the morning trading session at 1,450.48 points, showing a drop of 10.87 points or 0.74%, with a trading value of THB 27.77 billion.

Bualuang Securities (BLS) noted that the Thai stock market was pressured by significant sell-offs in DELTA, TRUE, and AOT, as well as other large-cap stocks, such as those in the banking sector, following the conclusion of the first quarter 2026 earnings announcement.

Part of this selling activity could be attributed to investors reducing holdings ahead of the MSCI Index revision announcement, which is expected in mid-May.

Meanwhile, the market remains concerned about geopolitical tensions in the Middle East. The ongoing lack of clarity in peace negotiations between the United States and Iran continues to raise uncertainty, potentially keeping oil prices at elevated levels and adding to inflationary pressures.

For the afternoon session, Bualuang Securities predicts that the Thai stock market is likely to remain in negative territory, with a resistance level at 1,470 points and support at 1,440 points.

The five most actively traded securities, by trading value, were as follows:

  • DELTA: trading value of THB 1.83 billion, closed at THB 286.00, down THB 7.00 or 2.39%
  • TRUE: trading value of THB 1.77 billion, closed at THB 13.50, down THB 0.30 or 2.17%
  • KBANK: trading value of THB 1.75 billion, closed at THB 190.00, down THB 1.50 or 0.78%
  • SCB: trading value of THB 1.52 billion, closed at THB 130.00, down THB 1.50 or 1.14%
  • AOT: trading value of THB 1.19 billion, closed at THB 53.75, down THB 1.50 or 2.71%