Trading System		Circuit Breaker
	Trading Hours		Trading Signs
	Trading Units, Price Spread, Floor&Ceiling Limits		Opening and closing Price Calculation
	Trading Boards		Property Fund
	Types of Order		Direct Market Access (DMA)
	Off-Hours Trading		Program Trading

Types of Order

The main type of trading order on the SET is the "limit- price" order, which is an order to buy or sell at a specific price. In addition, as part of efforts to service all types of investors, the Exchange has introduced six other types of orders for main board trading.

Non-limit price orders

1. Market Price Order (MP): An order to buy or sell a security at the best price currently available.
2. At-The-Open Order (ATO): An order to buy or sell a ssecurity at the opening price.
3. At the Close Order (ATC): An order to buy or sell a security at the closing price.

Note: Since July 2006 onward, ATO and ATC orders contain first-matching priority over limit price order

Conditional orders

1. Immediate-Or-Cancel Order (IOC): An order to buy or sell a stock immediately at a specific price on the condition that, if there is any remaining volume unmatched, the remaining volume will be revoked.
2. Fill-Or-Kill Order (FOK): An order to buy or sell the whole ordered volume at a specific price. If this condition cannot be met, the order is revoked.

Publish orders

Publish Orders: An order to buy or sell a stock with an ordered volume of at least 10 board lots (mostly 1,000 shares) while also specifying the equal amounts of the ordered volume to be published in the ARMS. When the published portion of the ordered volume is executed, the next remaining portion is placed in the queue until the whole ordered volume has been executed.

Basket order

Basket order: An order to buy or sell a group of securities simultaneously. In the SET's trading system, Basket order will be separated for each security to queue and execute as normal order

Component of Basket Order

• Traded securities must be in the SET50 Index List or FTSE SET Large Cap Index.
• At least, 10 securities per basket.
• At least, 15 million Thai Baht per basket.
• Orders in a Basket must be either buy or sell.
• Basket order is a single-client transaction.
• Each order in a Basket must be limit price order that price within +/- 3% of the last execution price. However, ATO and ATC can be sent in Pre-Open and Pre-Close sessions

Trading Board: Main Board and Foreign Board
Trading Method: Automated Order Matching (AOM)
Trading Hours: Basket orders can be sent in every market sessions