Order book

In short

The live list of resting buy and sell orders at each price — the market's visible queue. Depth in the book is what "liquidity" looks like on a screen.

Where Order book is explained in depth

The definition above is the short version. These pages put it to work, in the order they use it most:

Terms this definition uses

The whole glossary

Information and education only. Every page, figure and calculator on this site exists to explain how financial instruments work. Nothing here is investment, tax or legal advice, a recommendation, or a valuation you can rely on. Full disclaimer