If a trade is cancelled, a subsequent trade on any marketplace which was:
- executed as a result of the price of the cancelled trade; or
- permitted only as a result of the price of the cancelled trade,
shall stand unless cancelled by the consent of the buyer and the seller or by a Market Integrity Official who is of the opinion that the cancellation of the subsequent trade is appropriate under the circumstances.
UMIR section 1.1 – “Market Integrity Official” and “marketplace”
UMIR section 1.2(2) – “trade”
UMIR section 7.11