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Price addendum
Price addendum Codes attached to the quotation for a security, indicating the extent to which the exchange broker was able to match the orders in the order book when determining the price of a security; they were used in floor trading up until 2011.
With the migration of trading to the fully electronic Xetra® trading platform, use of the price addenda applicable until that time was discontinued in May 2011. Only a small number of price details are still used today.