Tadawul widens market-order execution to five price ticks from 4 Oct

Main Market and Nomu market orders may fill across up to five ticks; remainder becomes a limit at the last trade.

1 October 2026

Saudi Exchange (Tadawul) said on 1 October 2026 that market orders on the Main Market and Nomu will, from Sunday 4 October 2026, execute against available liquidity across up to five price ticks from the best available price. Any unfilled quantity converts to a limit order at the last executed price; derivatives trading is unchanged.

• Saudi Exchange announced on 1 October 2026 a change to market-order execution on the Main Market and Nomu – Parallel Market.
• The updated mechanism takes effect Sunday 4 October 2026.
• Market orders may fill across multiple price levels within a maximum of five price ticks from the best available price.
• Any remainder that hits the five-tick bound or exhausts liquidity in range becomes a limit order at the last execution price.
• Derivatives market order mechanics are unchanged.

Saudi Exchange (Tadawul) announced on 1 October 2026 an update to how market orders execute on the Main Market and Nomu – Parallel Market, effective Sunday 4 October 2026.

Under the revised mechanism, a market order may execute against available quantities across multiple price levels within a maximum of five price ticks from the best available price when the order enters the book.

If the order reaches that five-tick bound, or if liquidity within the range is exhausted, any remaining unexecuted quantity converts automatically into a limit order at the price of the last execution.

Previously, market orders filled only at the best available price, with any remainder converted to a limit at that single execution price. The exchange said the change is intended to increase the volume that can be filled immediately by tapping nearby liquidity.

The update applies to securities on the Main Market and Nomu only. The derivatives market mechanism is unchanged.