Source: https://mochatrade.com/learn/glossary/order-book

# Order book
URL: https://mochatrade.com/learn/glossary/order-book
Last modified: 2026-10-17

An order book is the list of every resting buy and sell order, bids on one side and asks on the other, sorted by price. A trade prints the moment a buyer meets the ask or a seller meets the bid, and [that print is what your chart shows](https://mochatrade.com/learn/us-market-structure/how-us-stock-prices-form). [Read the size at each level before you size](https://mochatrade.com/learn/start-here/nvidia-trade-walkthrough), and read [the gap between the two best prices as fear](https://mochatrade.com/blog/mocha-markets-weekly-dec).

## Related terms

- Market order: https://mochatrade.com/learn/glossary/market-order
- Limit order: https://mochatrade.com/learn/glossary/limit-order
- Slippage: https://mochatrade.com/learn/glossary/slippage
- Bid-ask spread: https://mochatrade.com/learn/glossary/bid-ask-spread
- Last traded price: https://mochatrade.com/learn/glossary/last-traded-price
- Nonfarm payrolls: https://mochatrade.com/learn/glossary/nonfarm-payrolls

Educational content only. Not investment advice. Leveraged products magnify losses as well as gains.