Price gap
Also called: Gap, Gap up, Gap down, Opening gap, Gap fill, Fiyat boşluğu
A gap is when price opens outside the previous candle's range, leaving a stretch on the chart where nothing traded.
4 min read · one puzzle on the page
What is a gap and why does it happen?
A gap is a zone price jumped over between two candles without trading. One day's high is 101, the next day opens at 104 and never trades below 103: nothing changed hands between 101 and 103. A jump up is a gap up, a jump down a gap down.
Most gaps come from news while the market is closed. A company reports earnings after the bell and the stock opens at a new price. On exchanges with an opening auction, like Borsa Istanbul, the opening price can land well away from the prior close. In forex, weekend news does the same at the Monday open.
In 24/7 markets like crypto, true gaps are rare: price doesn't jump, it just moves very fast. But a spike of two big candles after a headline is, for decision-making, almost the same thing. Price is suddenly far away and you're on the outside.
Types of gaps and how to read them
A common gap is a small one inside a range and often fills soon. A breakaway gap clears a range or resistance with a jump and can start a new move. A runaway gap appears mid-trend and shows the move accelerating. An exhaustion gap comes at the end of a long move; if it fills quickly, the move is probably done.
The gap's location tells you which one you're looking at. A jump out of the top of a range isn't the same as a stock that has rallied for five days and then gaps up again. A candle's meaning is where it stands, and that goes for gaps too.
Watch the first few candles after it. In a breakaway gap price holds above the gap and, even on a pullback, barely enters it. If price fills the gap fast and closes below it, the read changes. The stop logic follows from that: in a breakaway gap, the far side of the gap is where the idea breaks.
Some traders also watch imbalances that aren't true gaps. In a three-candle sequence, if the first candle's high and the third candle's low leave space between them, that's called a fair value gap. Price often returns to it, but that isn't guaranteed either.
Try it on a chart
This chart comes from a market that trades around the clock, so there's no true gap, only a sudden jump after news. The decision is the same as after a gap: look at where in the move you'd be entering and where a stop could go.
The data is out; price shot up in two candles. Do you jump on the train?
No sign-up needed. Make your call; when the chart opens you'll see why.
The costliest gap mistake: chasing
The data hits, price jumps 2,000 dollars in two candles and you buy up there. That's entering at the most expensive point. Where does the stop go? The only logical spot is where the move started, 2,000 dollars below. 1R becomes huge and the target is unclear.
The healthier path is waiting for the first pullback. If the move is real, price pauses, eases back and holds somewhere. That hold gives you a stop location: the pullback low. If you miss it, you miss it; another setup comes along.
The opposite mistake is common too: fading the gap because it must fill. Shorting a strong breakaway gap means standing against the new information behind the headline. With no structure, wait either way.
Do gaps always fill?
Half true at best. Many do eventually, not all, and the ones that do give no timing. Some breakaway gaps stay open for years. Don't make that saying your reason to trade.
A gap can also jump your stop. If your stop sits at 100 while the market is closed and price opens at 94 the next day, you're out at 94 or close to it, not at 100. That's slippage: with an entry at 106, a loss planned as 6 points becomes 12, so 1R turns into 2R. It's the risk of holding through weekends and earnings.
In thin markets and small stocks, gaps form more easily and say less. Read a gap together with the volume and the news behind it; on its own it doesn't give a direction.
Frequently asked questions
Do gaps always fill?
No. Many gaps fill eventually, especially common gaps inside a range. But breakaway gaps, where price jumps over a range or resistance, can stay open for months or years. And the ones that do fill give you no timing. Trading against a gap because it has to fill means trusting a saying, not evidence.
What do gap up and gap down mean?
A gap up is when price opens above the previous candle's high, leaving a space where nothing traded. A gap down is the reverse: price opens below the previous candle's low. It usually follows news released while the market was closed, such as earnings for stocks or weekend events in forex. Opening auctions on exchanges like Borsa Istanbul also produce gaps regularly.
Should you enter right after a gap?
Usually waiting is the sounder choice. Buying the gapped price means entering at the most expensive point, with no nearby structure for a stop. If the move is real, price tends to pause and pull back, and the level where that pullback holds gives you a stop location. A gap can also jump straight over a stop, so keep position size modest.

