SGX Rulebooks
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Past version: Effective up to 23 Feb 2014

The trade loss will be the difference between the value of the error trade and the value of the intended trade. The value of the intended trade will be determined as:

(1) in the case of an error in the entry of the volume of the order, the value of a trade for the actual intended volume, at the price at which the order was entered;
(2) in the case of an error in the entry of the price of a security or Futures Contract other than a structured warrant, the value of a trade for the volume of the order which was entered at:
(a) the last traded price immediately preceding the error trade, where such preceding trade was executed on the same trading day as the error trade; or
(b) the best bid or best offer price at the time of the execution of the first share of the error trade; or
(3) in the case of an error in the entry of the price of a structured warrant, the value of a trade for the volume of the order which was entered, at the Reference Price as determined in accordance with Rule 8.6.14.