Last 5 Trading Sessions
| Date | Open | Close | Change | Gap |
|---|---|---|---|---|
| March 26, 2026 | 11,083.18 | 11,090.33 | +0.06% | Gap Up |
| March 25, 2026 | 10,953.18 | 11,079.93 | +1.16% | Gap Up |
| March 24, 2026 | 10,954.43 | 10,949.38 | -0.05% | Gap Up |
| March 16, 2026 | 10,900.48 | 10,946.26 | +0.42% | Gap Up |
| March 15, 2026 | 10,884.17 | 10,886.63 | +0.02% | No Gap |
Understanding TASI Open and Close Prices
Opening and closing prices are among the most important data points in TASI technical analysis. The opening price reflects trader sentiment after digesting overnight news and global events, while the closing price represents the final consensus between buyers and sellers on the index's value at session end.
Price Gaps: When the index opens with a significant difference from the previous day's close, a price gap is formed. Gap ups (opening above the previous close) may signal positive overnight news, while gap downs (opening below) may indicate selling pressure. Markets often attempt to "fill" these gaps in subsequent sessions — a well-known concept in technical analysis that can be observed on the TASI chart.
The Opening and Closing Auction Mechanism
The opening price is determined through an auction that runs from 9:30 AM to 10:00 AM Riyadh time. During this period, buy and sell orders are collected and an equilibrium price that maximizes execution volume is determined. The same mechanism is used for the closing price via an auction that begins at 3:00 PM. Visit the TASI trading hours page for full schedule details.
Why the closing price matters: The closing price is the official reference for portfolio valuations and for calculating the net asset value (NAV) of exchange-traded funds (ETFs). It is also used to compute pivot points and support/resistance levels for the next session. This is why institutional investors prefer to execute large orders during the closing auction.
Using Open/Close Data in Trading
The relationship between the open and close generates candlestick patterns. If the index closes significantly above its open on heavy volume, it signals a strong bullish session dominated by buyers. If it closes near the open despite a wide intraday range (a doji candle), it indicates market indecision and a tug-of-war between bulls and bears.
Monitoring gap patterns over several days helps identify the market's direction. A series of gap ups with elevated liquidity confirms a strong uptrend. Frequent gaps that are quickly filled may signal choppy, directionless trading. Review the TASI daily summary to track these patterns over time.
TASI Open/Close FAQ
What is a price gap in the TASI index?
A price gap is the difference between the previous session's closing price and the next session's opening price. A gap up occurs when the index opens above the previous close, and a gap down occurs when it opens below. Gaps are caused by news or events that occur outside trading hours.
When does the TASI market open and close?
The Saudi Exchange (Tadawul) operates from 10:00 AM to 3:00 PM Riyadh time (AST). The pre-open auction runs from 9:30 AM to 10:00 AM, during which opening prices are determined through a matching process. The closing auction determines the official closing price at 3:00 PM.
Why does the TASI opening price differ from the previous close?
The opening price can differ from the previous close due to overnight news releases, global market movements, oil price changes, or accumulated buy/sell orders. The opening price is determined during the pre-open auction through supply and demand matching.
Can I trade during the opening and closing auctions?
Yes, you can submit orders during the pre-open auction (9:30-10:00 AM) and the closing auction. However, execution occurs at a single equilibrium price. Continuous trading takes place between 10:00 AM and 3:00 PM.
What is the closing auction and how does it affect the closing price?
The closing auction is a brief trading session starting at 3:00 PM that lasts approximately 10 minutes. During this period, buy and sell orders are aggregated to determine a single closing price that maximizes execution volume. This official closing price is used for portfolio valuations, ETF NAV calculations, and as the reference for the next session.