How DEX Charts Are Built: Trades, Candles, Pools and Why Charts Differ
From trade to candle
Every swap on a decentralized exchange is recorded on chain. A chart service reads those records and calculates the price of each trade from the amounts exchanged. It then groups trades into time periods, such as one minute or one hour. Each group becomes a candle with four values: the first price (open), the highest (high), the lowest (low) and the last (close). See how to read a memecoin chart for reading them.
A chart follows a pool
A token can have more than one pool, on different venues or against different pair assets. A chart usually follows one pool. If a token has several, the picture changes depending on which one you view. QNT trades in a PumpSwap pool created 2026-06-04. Learn what pools are in what is a liquidity pool.
Why charts can disagree
- Different pools. Two sites may follow different pools or combine several.
- Pair asset. Price may be shown against SOL or a dollar stablecoin, and converting adds its own assumptions.
- Timing. Sites refresh at different speeds and may read different parts of the chain.
- Filtering. Some sites remove trades they consider unusual, others do not.
- History. Older candles may be missing if the site began tracking after launch.
Thin markets look jumpy
When a pool is shallow, a single trade can print a tall candle. That is real, but it may say little about wider interest. Read liquidity depth and price impact to understand why.
Volume and market cap on charts
Volume is the total traded in a window and can be inflated, as explained in wash trading and fake volume. Market cap is price multiplied by a supply figure the site chooses. See market cap vs FDV.
A note on timeframes
The same trades can look calm on a daily chart and wild on a one minute chart. Short timeframes show detail but also noise, while long ones smooth things out and hide spikes. Switch between them to understand the whole picture, and remember that a new token may have only a short history to show.
If two sites disagree, do not pick the one you like better. Find the pool address, open it on a block explorer and read the actual swaps. The chain is the source, and every chart is an interpretation of it. Once you understand the reasons for differences, they become less alarming and more useful as a prompt to look closer.
How to use charts well
Treat a chart as a record of the past, not a promise about the future, and be especially careful with brand new tokens, where a few trades can make the picture look more meaningful than it is. When numbers matter, check two tools and the pool itself, using DEX Screener and this site's data notes. Not financial advice.
Frequently asked questions
What is a candle on a crypto chart?
It is a block showing the open, high, low and close price for one time period.
Why does my wallet show a different price from the chart?
Your wallet quotes a route for your trade size at that moment, while the chart shows past trades in one pool.
Is a chart about the token or the pool?
Usually the pool. That is why the same token can look different on different sites.
Can charts be wrong?
They can be delayed, incomplete or built on different assumptions. Cross check important numbers.
Does a big candle mean big interest?
Not always. In a shallow pool a single trade can create a tall candle.
Keep reading
- How to Read a Memecoin Chart: Price, Market Cap, Liquidity and Volume
A beginner guide to reading memecoin charts: candlesticks, market cap, liquidity, volume and buy versus sell pressure. - How to Use DexScreener to Research a Token
DexScreener tracks DEX trading pairs across blockchains. Learn how to find a token's pool, read the chart and spot warning signs before you trade. - What Is a Liquidity Pool in Crypto?
A liquidity pool is a shared pot of two tokens that lets people swap on a DEX without an order book. Learn how pools set prices and why they matter for safety. - Buy Sell Ratio Explained: What It Shows and Where It Misleads
Learn what the buy and sell ratio on chart sites measures, how it is calculated, and why it is a weak signal on its own when judging a memecoin.
All How to buy and stay safe guides | Back to top | Search the site
Main pages: What is QNT? | Token information | How to buy | FAQ