DEFINITION of '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.

BREAKING DOWN 'Order Book Official'

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".

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RELATED FAQS
  1. What's the difference between a market order and a limit order?

    Buy and sell trades with market orders at the present stock price and execute limit orders if the stock price falls within ... Read Answer >>
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    Learn how a limit order is placed, the types of stocks it is most useful for and the specifications placed with it to suit ... Read Answer >>
  3. Why do limit orders cost more than market orders?

    Learn the difference between a market order and a limit order, and why a trader placing a limit order pays higher fees than ... Read Answer >>
  4. Why is the execution of a limit order not guaranteed?

    Using a limit order to buy a stock can be helpful in securing certain prices, but the mechanics of a limit order can decrease ... Read Answer >>
  5. How do I set a strike price in foreign exchange trading?

    Learn about the different order types foreign exchange traders can use to manage positions at certain strike prices and how ... Read Answer >>
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