Order Book Official A trading floor participant responsible for maintaining a list of public market or limit orders of a specific option class using the "market-marker" system of executing orders. Investopedia Says: The term can also sometimes be used in reference to a current list of public market or limit orders for a given exchange. For example, a list of specific public orders awaiting execution on the Chicago Board Options Exchange could be referred to as the "order book official". Related Terms: Blotter Chicago Board Options Exchange - CBOE Exchange-Traded Option Flexible Exchange Option - FLEX Market Maker Public Book (Of Orders) Stock Option |