Book

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DEFINITION of 'Book'

A record of all the positions that a trader is holding. This record shows the total amount of long and short position that the trader has undertaken.

INVESTOPEDIA EXPLAINS 'Book'

For example, a trader with a very simple "book" may hold two positions: one long position of XYZ stock worth $1,500 and a short position worth $2,500. Keeping an up-to-date book allows a trader to be aware of his or her positions, and would be a good step in preventing a trader from being exposed to any one position for a long period of time.

RELATED TERMS
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  2. Short (or Short Position)

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  3. Long (or Long Position)

    1. The buying of a security such as a stock, commodity or currency, ...
  4. Position

    The amount of a security either owned (which constitutes a long ...
  5. Desk Trader

    A trader who is restricted to instituting trades for a firm's ...
  6. Book Value

    1. The value at which an asset is carried on a balance sheet. ...
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