In response to heightened market turbulence triggered by the latest round of U.S. tariff measures announced by President Donald Trump, the Stock Exchange of Thailand (SET) and the Thailand Futures Exchange (TFEX) have announced temporary measures to stabilize trading activities and protect investors during April 8–11, 2025.
The SET Board, in an emergency meeting held on April 7, 2025, approved a set of temporary rules aimed at reducing price swings and allowing investors more time to process information and make informed decisions. TFEX has also aligned with SET by introducing corresponding measures for the derivatives market.
Key Temporary Measures (Effective April 8–11, 2025):
Ceiling & Floor Adjustment
- The daily price movement limits (Ceiling/Floor) will be reduced by half:
- For common stocks and investment units on SET and mai: from ±30% to ±15%.
- For foreign shares: from ±60% to ±30%.
- For equity-based products on TFEX, including Index Futures, Options, Sector Futures, and Single Stock Futures: from ±30% to ±15%.
- These changes do not apply to Depositary Receipts (DR) or DRx.
| Markets | Product | Ceiling & Floor | |
|---|---|---|---|
| Current | New | ||
| SET, mai | Stocks/Equities | +/- 30% | +/- 15% |
| Foreign share | +/- 60% | +/- 30% | |
| TFEX | Index Futures / Options | +/- 30% | +/- 15% |
| Sector Futures | +/- 30% | +/- 15% | |
| Single Stock Futures | +/- 30% | +/- 15% | |
Dynamic Price Band Reduction
The intraday price fluctuation band for each individual security will be narrowed from ±10% to ±5%, based on the most recent trading price.
Temporary Short Selling Ban
Short selling of all securities will be temporarily suspended, with the exception of short selling conducted by registered Market Makers (MM) on SET, mai, and TFEX.
The SET emphasized that these temporary adjustments are proactive steps to help reinforce market stability and investor confidence during this period of elevated global uncertainty. The Exchange will continue to closely monitor market conditions on a daily basis and stands ready to revise these measures as necessary.
