XAUUSD is the price of one troy ounce of gold quoted in US dollars. XAU is the metal's ticker and USD is the dollar, so the symbol tells you how many dollars one ounce of gold is worth. On MT5 it trades like any other symbol with bid, ask and spread.

What moves the gold price?

Gold is driven mainly by US dollar strength, real interest rates and bond yields, risk sentiment and safe-haven demand, inflation expectations, and central bank buying. A stronger dollar and higher real yields tend to pressure gold, while fear, falling yields and inflation worries tend to support it.

What are the best hours to trade gold?

Gold is most active during the London session and the US session overlap, roughly 08:00 to 17:00 London time. This is when liquidity is deepest and spreads are tightest. Major moves often happen around US economic releases such as CPI, jobs data and Federal Reserve decisions.

What is the best indicator for trading gold?

There is no single magic indicator. Because gold trends hard and reverses sharply, a structure-based reading that confirms whether the market is genuinely trending or chopping is more useful than a lone oscillator. Market Structure Pro fuses 27 tools into one TRADE, TRANSITION or NO TRADE verdict for XAUUSD.

Home / Learn Hub / How Markets Work / Price Gaps

Beginner

Price Gaps Explained: Why a Stop Loss Cannot Protect You

A gap is what happens when a market reopens somewhere other than where it closed. It is the one risk a normal stop loss cannot protect you from, because for that stretch of price there was simply nobody there to trade with.

In one sentence:

A gap is a jump from one price to another with no trading in between, which happens whenever a market is closed while the news that repriced it arrived.

Price Gaps at a glance

What it is	A move from one price to another with no trades in between
Why it happens	Information arrives while the market is closed, so the reopening price reflects it immediately
Forex	Gaps at the Sunday open after the Friday close, usually small but occasionally large
Shares and indices	Gap between yesterday’s close and today’s open: routine, and large around earnings
Crypto	Trades continuously, so spot rarely gaps, but it can move like a gap in seconds
What stops do	Trigger at your level and fill at the next available price, which may be far away
Guaranteed stops	Do cover gap risk, and brokers charge a premium for them
Real defence	Position size, and not carrying oversized exposure through a known closure

What it is and why it works

Markets only produce prices while they are open. A share market closes for the night; the forex market closes from Friday evening until Sunday evening; a futures contract pauses for maintenance. During those closures, the world does not stop. Companies report results, central banks make announcements, elections are decided, conflicts begin. When trading resumes, participants price in everything that happened while they were away, and the first trade can be a long way from the last one.

That jump is a gap, and the crucial detail is that no trading occurred inside it. It is not a fast move; it is an absence. There was no price of any kind between the close and the open, because there was no market. Any order that would have executed within that range simply could not.

The three environments behave differently. Forex is a five-and-a-half-day market, so its gap risk is concentrated at the Sunday reopening. Most weekend gaps are modest, because the currency market is enormous and the weekend is short, but political events, elections and central bank surprises produce genuinely large ones. Shares and stock indices gap far more routinely, because the cash market is only open for a portion of each day. Earnings reports are deliberately released outside trading hours, which is precisely why a single share can open dramatically away from its previous close. Index futures trade nearly around the clock, which softens the effect on the index but does not remove it from the underlying shares. Crypto trades continuously, so spot markets rarely gap in the classic sense. That is not the same as being safe: crypto can travel the distance of a large gap within seconds when liquidity thins and leveraged positions liquidate, which produces the same practical outcome by a different mechanism.

Now the part that costs people money. A stop loss is an instruction to trade at market once your level trades. If price gaps straight past your level, the instruction still executes: at the first available price on the other side. You are filled where the market reopened, not where your stop sat, and the difference is entirely uncontrolled. This is not a broker failure, it is the definition of a gap. The only instrument that removes it is a guaranteed stop, which some brokers offer for a premium, and even those carry conditions worth reading carefully.

How to trade it, step by step

Know your instrument’s closure schedule before you hold anything through it. Forex closes Friday evening and reopens Sunday evening. Cash equity markets close overnight. Futures have daily maintenance breaks. Write down the exact times for what you trade, in your own timezone, using the market hours tool where relevant.
Check the calendar for the closed period, not just the open one. Elections, referendums, central bank decisions in other timezones and company earnings frequently land while your market is shut. A weekend containing a national election is not an ordinary weekend, and the position you can carry through it is not an ordinary position.
Reduce size before a known closure rather than relying on the stop. The only reliable protection against gap risk is having less on. If you would not be comfortable with your position filling two or three times further away than your stop, the position is too large to carry through the gap. Work the cash figure out from your pip value, as set out in how currency pairs are quoted.
For single shares, treat earnings dates as a hard decision point. Either be flat into the announcement or accept, in advance and in cash terms, that the open could be far beyond your stop. There is no third option and no stop placement that changes this.
Consider closing on Friday and re-entering on Monday. You pay the spread twice, which is a known and small cost, in exchange for eliminating an unknown and potentially large one. For most retail traders on most weekends this trade is worth making, particularly on volatile instruments.
Do not place fresh orders into the reopening. The first minutes after any reopen carry the widest spreads and the thinnest liquidity of the session. Let the market establish a genuine two-sided price before acting on anything you see.
Ask what a guaranteed stop actually costs you. Compare the premium against the size of gap you are protecting against and how often you carry positions through closures. For an occasional overnight share position it can be sensible; for a frequent intraday trader it is usually a permanent cost against a rare risk.
Treat a gap as new information, not as a level to fade. A large gap means the market repriced. Trading against it because “gaps get filled” is betting that a repricing was wrong, with no evidence beyond a slogan.

Size every one of those entries with the position size calculator and check the trade is worth taking with the risk/reward calculator before you commit.

The conditions it needs

Gap risk is highest where closures are longest

The longer the market is shut and the more can happen while it is, the larger the potential gap. Weekends in forex, long public holidays, and single shares reporting results outside hours are the three situations where the risk is genuinely material rather than theoretical.

It rises with leverage, not with volatility alone

A gap that is a minor inconvenience at a modest position size can be an account-defining event at a large one. Because a gap can exceed your stop by an unlimited amount, leverage converts an ordinary event into a solvency question. This is the mechanism behind most negative balance stories.

Index futures soften but do not remove it

Because index futures trade nearly continuously, an index CFD often shows a fast move rather than a clean gap. The underlying shares still gap at the cash open, which is why individual equity positions and index positions carry quite different overnight risk profiles.

Crypto substitutes a different risk

Continuous trading removes the classic gap, but weekend liquidity in crypto is thin and leverage is high, so liquidation cascades can produce moves of comparable size in minutes. The practical lesson, do not hold size you cannot afford to see move a long way when you are not watching, is identical.

When it fails

“My stop loss failed.” It did not fail; it executed exactly as designed. A stop becomes a market order when your level trades, and if no price existed between your level and the reopen, the fill happens at the reopen. Nothing was broken and no broker was involved in the decision.
“Gaps always get filled.” Many are, which is why the idea persists, and many are not. A gap driven by genuine repricing (an earnings surprise, a central bank shift) frequently never returns. Trading a gap fill as though it were a rule is fading new information for no reason other than a slogan.
“Forex does not gap because it is open 24 hours.” Forex is open twenty-four hours for five and a half days a week, not seven. The weekend closure is real, and weekends containing elections or geopolitical events have produced substantial Sunday gaps.
Sizing a position on the assumption the stop will hold. Your worst case is not your stop distance; it is your stop distance plus whatever the gap adds. Any risk calculation that treats the stop as a floor is understating the tail, and the tail is what ends accounts.
Trading the reopen because the chart looks decisive. The first prints after a closure are made in the thinnest conditions of the week, with the widest spreads. A convincing candle there frequently reverses once real participants arrive and a proper two-sided market forms.
Assuming a guaranteed stop makes you safe everywhere. Guaranteed stops are instrument-specific, cost a premium, often require a minimum distance, and may be unavailable on the very instruments and moments where they would matter most. Read the terms before treating one as protection.

Where you will see this most clearly

GBP/USD: UK political events land at weekends often enough that Sunday gaps here are a genuine planning issue.
S&P 500: The index gaps at the cash open even though the futures trade nearly continuously.
GER40 (DAX): A cash open that regularly gaps away from the overnight futures price.
Bitcoin: Trades continuously and so rarely gaps, yet can travel a gap-sized distance in minutes at the weekend.

For different levels of experience

If you are brand new

A gap is when a market opens at a different price from where it closed. Nothing traded in between; the market was shut, news happened, and everyone repriced before the first trade of the new session.

The important consequence is this: a stop loss cannot protect you across a gap. Your stop is an instruction to get out once a price is reached. If that price never traded, the instruction executes at the first price that did, which might be a long way past where you wanted out. You are not being cheated. There was simply nothing there.

What to do about it as a beginner is straightforward. Do not hold large positions over a weekend or overnight while you are still learning. If you want to hold, hold something small enough that a jump three times your stop distance would be annoying rather than serious. And be careful with individual company shares, because results are announced when the market is closed, which is exactly when the biggest gaps happen.

If your results are inconsistent

The pattern to look for in your own history is one outsized loss that does not match any of your others. That is almost always a gap, and it usually happens on a position that was carried through a weekend or an earnings announcement because the setup still looked good on Friday.

The correction is not a better stop; there is no such thing for this risk. It is a rule about what you are allowed to carry through a closure. Many consistent traders halve their exposure into the weekend as a matter of routine and close single-share positions entirely before results. That costs you a little in spread and a few missed continuations, and it removes the one event that can undo a good quarter.

The other adjustment is to stop treating the gap-fill idea as a strategy. Some gaps close and some represent permanent repricing, and the difference is the reason for the gap. If a company’s earnings genuinely changed the picture, fading the move is arguing with new information because a chart shape suggested you should.

If you are experienced

Gap risk is the clearest illustration that a stop is a path-dependent instrument rather than a bound on loss. Any sizing framework using stop distance as maximum loss is implicitly assuming continuity of price, and gaps are exactly the violation of that assumption. The correct treatment is to model overnight and weekend exposure separately from intraday, with a fatter tail assumption on the former.

For portfolios, the compounding factor is that gap events are usually systematic rather than idiosyncratic. A geopolitical weekend gaps every correlated position simultaneously, which means the relevant number is aggregate exposure to the theme rather than per-position risk, the point made in correlation between markets.

The structural asymmetry worth remembering is that gap direction is not random with respect to positioning. Crowded positioning creates a stop and margin overhang that the reopen resolves at once, which is why gaps against the crowd tend to be larger than gaps with it. Where options are available, defining risk with a long option rather than a stop is the only construction that genuinely caps the tail, and it prices that certainty explicitly rather than assuming it.

Risk management for this strategy

Gaps are the reason your true worst case is larger than your stop distance. Build the assumption in explicitly: when sizing a position you intend to carry through a closure, ask what a fill two or three times beyond your stop would cost, and size so that the answer is survivable. Use the position size calculator for the ordinary case, then apply that multiple as a stress test.

Beyond size, the practical controls are behavioural. Reduce or close before weekends, holidays and earnings; avoid carrying multiple correlated positions through the same closure, because they will all gap together; and check whether your broker offers negative balance protection and guaranteed stops, and on what terms. Leverage is the multiplier that turns a gap from a bad day into a terminal one, so the more of it you use, the shorter the period you should be willing to hold through a closed market.

Where Market Structure Pro fits

The decision a gap really tests is not analytical, it is procedural: should this position still be open when the market closes? That question is easy to defer when a chart looks promising on Friday afternoon.

Market Structure Pro helps by being explicit about the quality of what you are holding. Its single verdict (TRADE, TRANSITION or NO TRADE) with a confidence percentage and an A/B/C grade gives you an objective read on whether a position is still in a state worth carrying, rather than a vague sense that it might keep going. A C-grade setup or a TRANSITION verdict heading into a closure is a straightforward case for reducing.

Its session awareness also matters around reopenings, where the thinnest conditions of the week produce the most misleading price action. Because state locks on the closed bar and does not repaint, a signal formed in those conditions cannot quietly rewrite itself into something cleaner afterwards. MSP is decision support: it does not place trades, it cannot close a position for you, and no tool of any kind can protect a position across a gap.

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Frequently asked questions

What is a price gap in trading?

It is a jump from one price to another with no trades in between, which happens when a market reopens after being closed. Information that arrived during the closure is priced into the first trade of the new session, so the open can be some distance from the previous close.

Can price gap through my stop loss?

Yes. A stop loss is an instruction to trade at market once your level is reached, not a guarantee of price. If the market reopens beyond your stop, the order fills at the first available price, which can be considerably worse. This is normal behaviour, not a broker error.

Does forex gap at the weekend?

It can. The forex market closes from Friday evening until Sunday evening, and anything that happens in between is priced into the reopening. Most weekend gaps are small, but elections, referendums and geopolitical events have produced substantial ones.

Do gaps always get filled?

No. Many gaps do close, which is why the idea is popular, but many never do. A gap that reflects genuine repricing, such as a major earnings surprise or a policy shift, often becomes the new normal level. Treating gap fill as a rule means betting against new information.

Why do stocks gap overnight?

Because cash equity markets are only open for part of the day and companies deliberately release results outside trading hours. Earnings, guidance changes, regulatory news and analyst actions all land while the market is shut, so the first trade of the next session reflects them immediately.

Why does crypto not gap?

Because it trades continuously, so there is no closure for information to accumulate during. That removes the classic gap but not the risk: thin weekend liquidity and heavy leverage allow crypto to move a gap-sized distance in minutes through liquidation cascades.

How do I protect myself from gap risk?

Primarily by reducing position size before known closures, and by not carrying large or multiple correlated positions through weekends, holidays and earnings announcements. Guaranteed stop losses do cover gaps, but brokers charge a premium and apply conditions, so they are a cost-benefit decision.

Is a guaranteed stop loss worth paying for?

It depends on how often you hold through closures and how large the potential gap is. For occasional overnight positions in individual shares it can be sensible. For an active intraday trader it is usually a constant cost against a rare risk that position sizing already addresses.