Traders often notice a visible break on price charts where the closing price of one candle differs sharply and noticeably from the opening price of the next bar. This is not a mystery — it’s a common market phenomenon known as a gap.
In this article, we’ll explain what a gap is in trading, how it forms, and whether it can be used profitably.
Contents
- What Is a Gap in Trading?
- How Gaps Form
- Types of Gaps in Forex
- How to Trade Gaps
- Dividend Gap in the Stock Market
- Weekly Gap Trading Strategy: “Filling the Gap”
What Is a Gap — Explained Simply
A gap in trading (from English “gap”) is a visible price discontinuity on a chart — it occurs when prices change rapidly and sharply.
In simple terms, a gap appears on Forex or stock market charts as a strong, sudden price jump in one direction — creating a clear void between the close of one period and the open of the next. Gaps are only visible when using bar or candlestick chart modes.
Economically, a gap reflects strong dominance by either buyers or sellers — when no opposing orders remain to match incoming demand or supply, price “drops” or “jumps” sharply to find new equilibrium levels.
How Gaps Form
Gaps most commonly appear after weekends: Friday’s close may differ significantly from Monday’s open for a currency pair, stock, or cryptocurrency — visually forming a “break” in price. This happens because while exchanges pause operations over the weekend, interbank forex markets, banks, and money changers continue functioning — creating ongoing demand for currencies.
Additionally, major economic summits, political speeches, geopolitical events, natural disasters, or policy announcements frequently occur over weekends. Traders anticipate these developments and place pending buy/sell orders in advance — causing sharp price jumps at Monday’s open. This is called a gap.
Gaps can also appear mid-week during high-impact news releases — such as employment data, GDP, inflation reports, or central bank interest rate decisions.
In various technical analysis schools, there’s a widely held view that markets tend to “fill the gap” — i.e., return to the closing price of the prior “pre-gap” period — given enough time.
Types of Gaps
Although gaps are relatively rare in Forex — occurring just 2–4 times per year per major currency pair — they vary significantly in meaning and implications for trading strategy. Here are the main types:
- Common gap: Occurs without major fundamental catalysts — typically over weekends following minor news. It doesn’t signal trend reversal or acceleration and usually closes quickly.
- Breakaway gap: Appears after a prolonged sideways (consolidation) phase, where clustered pending orders trigger cascading executions. A breakaway gap suggests the start of a new trend — making it a valid signal to enter trades in the breakout direction.
- Breakout gap: Similar to a breakaway gap, but the broken level loses its significance as support/resistance — the trend may stall or reverse shortly after.
- Runaway (continuation) gap: Forms mid-trend, reinforcing momentum. Bulls or bears interpret fresh news as confirmation of continued strength — leading to sustained buying or selling pressure.
- Exhaustion gap: Occurs near the end of a strong move, triggered by a final surge of news-driven activity. It signals diminishing momentum — often followed by profit-taking and reversal.
- Unfilled gap: A problematic gap that fails to close within ~15 full trading candles. Its strength implies persistent directional pressure — delaying or preventing a fill.
Using Gaps in Trading
A gap isn’t just a side effect of strong price action — it often acts as a confirmation signal for the prevailing trend. For example, if Monday opens significantly lower than Friday’s close, it may indicate bearish continuation. As shown below, the downward price movement continued after the gap.
The opposite applies when Monday opens well above Friday’s close — the upward gap reflects strong bullish momentum. In the next example, an existing uptrend accelerated after the gap, pushing prices to new highs.
On liquid markets, gaps are often filled by retracements — i.e., price returns to the pre-gap closing level before extending the original trend. However, this isn’t guaranteed: sometimes the gap fills only after a strong directional move.
Dividend Gap in the Stock Market
On the first trading day after the ex-dividend date, stock prices typically drop sharply — usually by roughly the amount of the declared dividend. This creates a visible dividend gap on the price chart.
FAQ
What causes a gap in trading?
Gaps form when the closing price of one period differs sharply from the opening price of the next—commonly after weekends, major news events, or economic releases—due to unmatched buy/sell orders and market discontinuity.
Do all gaps get filled?
No. While many gaps are eventually filled—especially common and breakaway gaps—exhaustion or unfilled gaps may persist for extended periods, reflecting strong directional pressure or trend exhaustion.
Are gaps reliable trading signals?
Gaps can support trading decisions—e.g., breakaway gaps often signal new trends—but should be confirmed with volume, context, and other technical factors; standalone gaps aren’t guaranteed predictors.
