The digital list of available orders for an asset or security that is arranged in increasing or decreasing order of price.
An order book refers to the electronic or digital list of available orders for an asset or security. This list contains two order classes: buy and sell orders. On an exchange, these order classes are clearly distinguished in colors and have different price ranges, although these differences are not always excessive. On Kyrrex Exchange, for example, buy orders are in green and sell orders are in red.
Apart from classification by order type, the main characteristic of an order book is that the list of open orders is organized by price in ascending or descending order.
An order book essentially allows a trader to know the different price conditions for buying or selling an asset. Thus, the trader can match orders manually or via an algorithm made available by the exchange platform.