Key points
Order books show the current buy and sell orders (bids and asks), displaying the supply and demand dynamics of the market for a given trading pair.
In highly liquid markets, order books are continuously updated, and when a trade is executed, the corresponding orders are quickly removed from the book. This makes the order book a dynamic tool for tracking market activity.
Order books can be useful for detecting potential support and resistance levels and analyzing market depth. However, since buy and sell walls can create false impressions of supply and demand, order books should be used alongside other tools for more accurate market analysis.
What is an order book?
An order book is like a real-time list of all current buy and sell orders for a particular asset, such as stocks, commodities, or cryptocurrencies. It provides a snapshot of what buyers are willing to pay (bids) and what sellers are asking for (asks), helping you see the market's supply and demand.
In the Binance app, the order book is located below the trading chart and looks like this:
On the Binance browser platform, the order book is located on the left or right side of your trading interface (on the left for Spot and Margin; right side for Futures). It looks like this:
How order books work
In highly liquid markets, you will notice that order books are active and constantly updating. As new buy or sell orders come in, they are added to the list. When a trade occurs, the relevant orders are removed from the order book. Basically, order books show the open orders that represent ongoing negotiations between buyers and sellers.
If you are a buyer, your order will be added based on the maximum price you are willing to pay. If you are a seller, it is based on the minimum price you are willing to accept.
Key components of an order book
Buy orders (bids): show what buyers are willing to pay. They are typically listed from the highest bid price to the lowest.
Sell orders (asks): show what sellers want in exchange for their assets. They are ordered from the lowest sell price to the highest.
Price and quantity: for each order, the book shows how much the trader wants to buy or sell and at what price.
Spread: it is the difference between the highest bid and the lowest ask. A smaller spread means the market is more liquid.
Order matching: when a buy order and a sell order align, the matching engine will execute the trade. In other words, if a buyer agrees to pay the price the seller is asking (or if a seller accepts an offer), the trade will take place.
Order book visualization: depth charts
Many traders use depth charts, which are visual representations of the order book. In the chart, the x-axis shows price points and the y-axis shows the volume of buy and sell orders at each price.
On Binance, you can find the depth chart in the upper right corner of the charting interface. You can also use the depth chart to check the bid-ask spread of a particular market.
You will see two curves: one for bids (buy orders in green) and another for asks (sell orders in red). By analyzing these curves, traders can get an idea of where the market is likely to move or detect "buy walls" or "sell walls" that could prevent the price from breaking through certain levels.
How traders use order books
Order books can provide interesting insights into liquidity and market trends. Here are some ways traders use order books:
Detecting support and resistance: large buy orders (buy wall) at a certain price could suggest strong support, while large sell orders (sell wall) could indicate resistance at that price.
Liquidity analysis: deep order books with many orders make it much easier to buy or sell without driving the price up or down too much.
Market depth: traders often look at how many orders are "pending" at different prices to anticipate possible market movements. For example, if there are many buy orders around certain prices, there's a higher likelihood that those levels will act as support.
However, orders can be easily placed and removed. Sometimes, buy and sell walls are used to create a false impression of supply and demand. So do not rely too heavily on the order book. It can provide some insights, but it is not infallible.
Types of orders in an order book
Market Orders: these orders are executed immediately at the best available price in the market. For example, if a buyer sends a Market order, it will match with the lowest ask price in the order book.
Limit Orders: a Limit order allows traders to specify the price at which they are willing to buy or sell. This order will only be executed if the market price reaches the trader's limit price, ensuring control over the execution price, but does not guarantee that the trade will be executed.
Stop Orders: these are conditional orders placed to buy or sell an asset when its price exceeds a specific point, triggering a Market or Limit order. Stop orders are often used to minimize losses, making them very useful for risk management.
Conclusions
In summary, an order book is a useful tool for understanding supply and demand in financial markets. Whether you are trading stocks, commodities, or cryptocurrencies, knowing how to read an order book can help you make better trading decisions.
Still, orders can be created and removed quickly. Remember that buy and sell walls are sometimes used to create a false impression of supply and demand. To reduce risks, it may be a good idea to combine your order book analysis with other indicators and technical tools.
Additional readings
Legal disclaimer: This content is provided "as is" solely for general information and educational purposes, without representation or warranty of any kind. It should not be construed as financial, legal, or other professional advice, nor is it intended to recommend the purchase of any specific product or service. You should seek particular advice from suitable professional advisors. As this article is the product of third-party contributions, please note that the opinions expressed belong to the third-party contributor and do not necessarily reflect those of Binance Academy. For more information, read our full legal notice here. The prices of digital assets can be volatile. The value of an investment may go down or up, and you may not recover the invested amount. You are solely responsible for your investment decisions. Binance Academy is not responsible for any loss you may incur. This material should not be construed as financial, legal, or other professional advice. If you want more information, please check our Terms of Use and the Risk Warning.