Why Forex Prices Gap at the Sunday Open and What It Does to Your Position

Educational content. This article explains the mechanics of price gaps at the weekly forex open and what they do to open positions on the MT5 platform. It does not constitute investment advice or a recommendation. CFD trading carries significant risk of loss and may not be suitable for all investors.

Forex prices gap at the Sunday open because the market records no trades while it is closed. The first quote of the week is set by the new balance of buyers and sellers, which has absorbed every headline since Friday. If that balance differs from the Friday close, the chart shows a jump with nothing traded in between.

This article explains why that happens, why gaps are usually small in forex but not harmless, and how far a gap must travel to reach a margin call or stop-out on a leveraged CFD. It does not forecast the direction of any gap.

What Is a Gap and Why Does It Appear on the Chart?

A gap is a difference between one candle's closing price and the next candle's opening price, with no traded prices in between. On a weekly cycle, it is the distance between the last quote on Friday and the first quote on Sunday evening.

A price chart is a record of quotes. While the interbank market is shut over the weekend, no new quotes arrive, so the last Friday quote stays on the chart. News does not stop. Elections, central bank statements, geopolitical events and weekend data from Asia continue to arrive. When the market reopens, dealers and traders price all of it at once. The chart does not draw a path between the two points, because no path exists. The market moved from one price to the other without trading in between.

This is different from a fast move during the week. A fast move still passes through intermediate prices, even if only for seconds. A gap skips them. That is why orders placed at intermediate prices cannot execute there.

When Does the Forex Market Close and Reopen?

The forex market closes on Friday evening after the New York session and reopens on Sunday evening with the Sydney session. Sydney opens the trading week, followed by Tokyo, London and New York. The session rhythm is covered in forex trading sessions, which also summarises the weekend gap in a short section.

The exact reopening time in UTC moves by an hour twice a year, because the reference point is the New York clock and US daylight saving time starts and ends on different dates from Europe and Asia. The mechanics are in why daylight saving changes shift trading sessions. MT5 shows server time, which is a fixed offset from New York, so the symbol specification in the platform is the reliable source for the open and close of each instrument.

Not every asset closes at the same time or for the same reasons. The table compares what produces a gap in each class available on Vanto.

The crypto row reflects the structure of the market, not a promise about Vanto's quoting hours. The live feed marks crypto symbols with no triple-swap day, which is consistent with a market that does not skip the weekend. Check the symbol specification in MT5 for the hours of any instrument you hold.

What Causes Prices to Gap Specifically at the Sunday Open?

The Sunday gap has three separate causes, and they combine in different proportions each week.

News that arrives while the market is closed. This is the main cause. A currency moves in response to information, and information keeps arriving over the weekend. The first quote reflects the market's view after the news, not the Friday view.

Thin liquidity in the first minutes. At the reopening, few participants are quoting. Dealers widen their quotes because the order book is shallow and the news flow since Friday is unknown. The first prices can come from very few dealers and reflect their caution more than a consensus. A thin book also moves faster on a small order, which is part of why the first minutes can look like a gap that later partly retraces. The relationship between liquidity and cost is explained in what is the spread in trading.

Order flow that built up over the weekend. Some participants cannot trade while the market is shut, but they can decide. Stop orders, pending orders and hedges queued for the open all wait. They compete for the first liquidity together.

Most weeks the three causes cancel out into a very small difference. Gaps become large when the weekend contains a real surprise. Over the weekend there is no price to react to, so the entire repricing lands in one step.

How Big Are Forex Gaps Compared with Other Assets?

Forex gaps are usually small compared with indices, metals and crypto, because major currency pairs are the deepest, most continuously quoted market and their typical weekly range is narrow in percentage terms. Small does not mean harmless, because leverage multiplies a small percentage into a large share of margin.

Gap size scales with the volatility of the instrument. In general, the more an instrument moves on a typical day, the larger its gaps tend to be in percentage terms, so gold and index CFDs tend to gap by more than major currency pairs. The article on what is volatility in trading and the one on what is average true range show how to measure the typical move of an instrument, which is the right yardstick for judging whether a gap is ordinary or extreme. The Vanto feed does not store historical gap sizes, so no average gap is quoted here.

The more useful question is not how big gaps are but how big a gap the account can survive. The next section answers it with arithmetic.

How Far Does a Gap Have to Go to Wipe Out Your Margin?

A gap equal to 1 divided by the leverage cap consumes the whole margin of a position: 0.20% at 1:500, 1% at 1:100 and 10% at 1:10. The reason is that margin is notional value divided by leverage, so the price move that equals the margin is the reciprocal of the leverage.

The table uses the Vanto feed snapshot, 10 October 2026, and one lot per instrument. Notional value is the contract size times the price. Margin at the cap is the notional value divided by the leverage for that class. The stop-out column assumes the account holds exactly 200% margin level (equity twice the margin) and no other positions. Stop-out is at 50% margin level, so the loss that reaches it is 1.5 times the margin, which is a move of 1.5 divided by the leverage. Spread, swap and other positions are ignored.

Three readings follow from the table.

1. On forex and gold a gap of 0.3% is enough. A move of 0.3% is small in percentage terms, yet for an account at 200% margin level it is enough to reach stop-out.
2. The cap differs by class, and so does the buffer. One lot of the S&P 500 CFD ties up USD 78 of margin, and a 1% gap consumes it. The class cap, not the instrument's reputation, sets the buffer.
3. The figures describe one lot and one position. A smaller position or a larger balance moves the thresholds the other way. Margin level, stop-out and how they are calculated are covered in what is the stop-out level in trading and what is margin in trading. At Vanto the margin call is at 100% and the stop-out at 50% on both account types.

The stop-out is not a barrier that holds the price. If the market reopens beyond the stop-out level, the platform closes positions at the first prices available, so the loss can exceed the point at which the 50% level was crossed. As the risk warning states, trading on margin can result in losses greater than the amount deposited.

What Happens to a Stop-Loss When the Price Gaps Through It?

A stop-loss that sits inside a gap is triggered at the first quote after the gap and the position is closed at the market, so the exit price is the reopening price, not the stop price. The loss is the planned loss plus the distance the market jumped beyond the stop. The general rule is explained in what is a stop-loss order, which includes a gold example. This article adds a forex case.

Worked example. Use the Vanto feed snapshot, 10 October 2026: EURUSD bid 1.12014. A trader holds one lot long with a stop at 1.11714, which is 30 pips away.

• Planned loss: 30 pips x USD 10 per pip x 1 lot = USD 300.
• The market reopens on Sunday with a bid of 1.11214, which is 80 pips below the entry (1.12014 - 1.11214 = 0.00800).
• The stop is triggered at the first quote and fills near the reopening price, 1.11214.
• Realised loss: 0.00800 x 100,000 = USD 800, plus the spread at the open.
• Difference from the plan: USD 500, or about 2.7 times the planned loss (800 divided by 300).

The stop did its job: it closed the position at the first price available. It could not close it at a price that did not exist.

Pending orders behave the same way. A buy stop sends a market order when the price rises to a level; MetaTrader 5 help describes a triggered stop order as a request to execute a market order, filled at the specified price or worse. If the market opens above that level, the order fills at the opening ask, which can be worse than the level set. A buy limit fills at its level or better, so a gap in its favour fills with a better price and a gap against it leaves the order unfilled. The two behaviours are compared in buy limit vs buy stop.

The slippage mechanics at the first quote are explained in what is slippage in trading.

Do Gaps Always Fill?

No. A gap fill, where the price returns to the Friday close, happens often enough that traders talk about it, and it does not happen reliably. A rule that says it always does has no support in this article's data and none should be assumed.

The reason is simple. A gap is a repricing caused by information. If the information changed the fair value of the currency, the old price has no special pull. If the gap was caused by thin liquidity at the open and the news was minor, the price can drift back as depth returns. Telling the two apart in real time is the hard part. A trader who treats every gap as a fade has no edge on the days when the news was real, and the margin table above shows how little room that leaves.

When the Rule Breaks: Gaps That Are Not Weekend Gaps

Weekend gaps are the most visible, but the same mechanism works whenever trading pauses or liquidity thins, and several cases look like gaps without being caused by the weekend.

• Daily breaks and session opens. Index CFDs follow the hours of the underlying market, so a stock index can gap at the start of its own session on any weekday, not only on Sunday.
• Scheduled releases. The first quote after a rate decision or payrolls release can skip several pips. The article on how NFP affects the US dollar shows how concentrated that repricing can be.
• Holidays. A holiday in one financial centre reduces liquidity, and the next open can reprice more than one day of news.
• Currency regime changes. A central bank that abandons a policy, such as a peg or a defence of a level, can cause a gap in the middle of a week.

In each case the protection is the same: size the position so that a gap larger than the stop does not threaten the account. A trader who needs the stop to be exact has to use a smaller position, because the platform cannot make a stop exact.

Common Mistakes When Holding Over the Weekend

The most common errors are treating a stop as a guarantee, sizing the position by the stop distance alone, and ignoring the cost of carrying a position across the weekend.

• Sizing by the stop distance only. A stop at 30 pips risks USD 300 per lot only if the market trades through 30 pips. Sizing the position on the assumption that the stop is exact understates the risk by the size of the gap. Position sizing should leave room for a stop that fills badly.
• Ignoring weekend margin. Margin is held continuously. A position that is comfortable on Friday at 200% margin level can reach stop-out from a 0.3% move, as the table shows.
• Forgetting the swap. Financing accrues while the position is open. On forex and metals the triple charge is booked on Wednesday, and on indices and energies on Friday, in the Vanto feed. The triple day compensates for the weekend, so a position held over it pays or earns three days at once. See what is triple swap day. The feed shows crypto with no triple day.
• Assuming that a hedge removes the gap risk. A hedged position still carries execution risk on each leg, so do not assume that offsetting positions behave as one.
• Trading the first minutes. The first minutes after the open combine the widest spreads of the week with the thinnest book, so a market order in that window can fill far from the quote on the screen.

How Traders Manage Weekend Gap Risk

Traders manage gap risk by reducing size before the close, not by moving stops, because a stop cannot protect against a price that does not trade. The common approaches are descriptive, not recommendations, and each has a cost.

None of these makes a stop exact. They change how large a gap the account can absorb. The correct choice depends on position size, balance and risk tolerance, which only the trader can judge.

Frequently Asked Questions

Why does forex have gaps if it trades 24 hours a day?

Forex trades 24 hours a day only on weekdays, so it has a gap every weekend. The market closes on Friday evening and reopens on Sunday evening, and no trades occur in between. During the week this weekly gap does not occur because the sessions hand over to each other.

Can a stop-loss prevent a weekend gap loss?

No, a stop-loss cannot prevent a weekend gap loss. It triggers at the first available quote after the open and fills at that price, which can be worse than the stop level. Only a smaller position or no position over the weekend reduces the exposure.

Are weekend gaps bigger on gold and indices than on forex?

Usually yes, in percentage terms, because gold and index CFDs are more volatile than major currency pairs. The Vanto feed holds no history of gap sizes, so no average is stated here. Measure the instrument's own typical move with average true range.

Do crypto CFDs have weekend gaps?

Crypto CFDs do not follow the weekly forex pattern, because the underlying crypto market trades every day. They can still gap during sharp moves and liquidation cascades, when liquidity disappears and quotes jump. Check the symbol specification in MT5 for the quoting hours of the instrument you hold.

What time is the Sunday open in my time zone?

The market reopens after the weekend break. The exact time depends on the instrument and can change with daylight saving time, so check the trading sessions in the symbol specification in MT5 rather than relying on a fixed clock time.

Does margin trading make gaps more dangerous?

Yes, because the same price jump is a larger share of margin at higher leverage. At 1:500, a gap of 0.20% equals the margin posted on forex and metals, and a position at 200% margin level reaches stop-out at a move of 0.30%. Leverage amplifies losses as well as gains.

Calculate the Numbers for Your Own Position

Before holding a position over the weekend, check what a gap would cost. The Vanto trading calculator shows margin, pip value and contract size for each symbol at the live price, which is all the table above needs. For the instruments covered here, see how to trade EUR/USD, how to trade USD/JPY, how to trade gold and how to trade the S&P 500. The basics of lots and leverage are in what is a lot and what is leverage in trading.

Risk warning. Trading securities, futures, options, and contracts for differences are complex financial instruments that require knowledge and understanding. Prices can fluctuate significantly and securities may become valueless. Investors may incur losses exceeding the potential for profits. Trading on margin can result in losses greater than the amount initially deposited. Past performance is not necessarily a guide to future performance. The information in this article is for educational purposes only and does not constitute investment advice, a recommendation, or an offer to buy or sell any financial instrument. Consider whether CFD trading is appropriate for your circumstances and seek independent advice if necessary.