Depth Chart
A visual representation of the order book showing cumulative buy and sell orders at each price level.
Depth Chart — A depth chart is a visual representation of the order book for a trading pair, showing the cumulative buy orders (bids) and sell orders (asks) at each price level. The chart reveals supply and demand concentration, helping traders identify support levels, resistance levels, and potential areas of price impact.
How Depth Charts Work
A depth chart plots cumulative order volume on the Y-axis against price on the X-axis. The left side (usually green) represents buy orders stacked from the current price downward, while the right side (usually red) shows sell orders stacked from the current price upward. The point where the two sides meet is the current market price, and the gap between them is the bid-ask spread.
Each step in the chart represents a price level where orders are resting. A large flat area at a specific price indicates a significant limit order or cluster of orders — often called a "wall." A steep curve indicates orders are spread across many price levels with no single dominant order. The overall shape reveals how much liquidity exists around the current price.
Most centralized exchanges and advanced DEX interfaces display depth charts in real time. On-chain order book DEXs like Serum (Solana) and dYdX provide similar visualizations. For AMM-based DEXs, the depth chart equivalent is derived from the liquidity curve of the pool, which shows how much of each token is available at incremental price levels.
Why Depth Charts Matter
Depth charts help traders assess how much liquidity is available and where large trades might cause significant price movement. A thin depth chart — where small orders could move the price by several percent — indicates low liquidity and high slippage risk. A thick depth chart suggests the market can absorb large orders without major price impact.
Traders use depth charts to identify potential support and resistance levels formed by large resting orders. A buy wall at $60,000 for BTC, for example, suggests strong buying interest at that level. However, experienced traders know that depth chart orders can be spoofed — placed and canceled to create a false impression of demand — so depth should be interpreted alongside actual trade volume and order flow.
Real-World Example
A trader analyzing the ETH/USDT pair on Binance opens the depth chart and sees a large buy wall of 5,000 ETH at $3,150 and a sell wall of 8,000 ETH at $3,250. The current price is $3,200. The buy wall suggests strong demand if the price drops to $3,150, while the sell wall indicates resistance at $3,250. The trader decides to place a limit buy at $3,155 (just above the wall) and a limit sell at $3,245 (just below the resistance), aiming to profit from the range while the walls hold. If either wall is pulled, the trader would reassess the setup.
Related Terms
Order Book
A real-time list of outstanding buy and sell orders for an asset on an exchange, used by CEXs and some hybrid DEXs.
Read definition DEX & ExchangeSpread
The gap between the best buy and best sell price for an asset; tighter spreads indicate better liquidity and more efficient markets.
Read definition DEX & ExchangeLimit Order
An instruction to buy or sell at a specified price or better; not executed until the market reaches the target price.
Read definition DeFi & AMMLiquidity Pool
A smart contract holding two or more tokens that traders swap against, funded by liquidity providers who earn fees.
Read definitionFrequently Asked Questions
Common questions about Depth Chart in cryptocurrency and DeFi.
A buy wall is a large cluster of buy orders at a specific price level, appearing as a steep vertical step on the bid side of the depth chart. A sell wall is the same on the ask side. Walls can indicate genuine support or resistance, but they can also be spoofed by traders who place and cancel large orders to influence sentiment.
AMMs like Uniswap do not have traditional order books, but their liquidity curves serve a similar function. Tools like DexScreener and GeckoTerminal display derived depth information by calculating how much liquidity is available at each price increment along the AMM curve.
Depth charts show resting orders at a single point in time and can change rapidly. Orders can be placed or canceled in milliseconds, and spoofing is common. Depth charts are best used as one input alongside trade volume, order flow, and funding rate data rather than as a standalone prediction tool.
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