13.3 Pre-opening 1 Pre-opening shall be the period between the start of the trading day and the actual opening of trading. 2 The market maker may enter new quotes in the orderbook or delete existing ones. The quantity of each quote must be an integral multiple of the initial denomination. It shall not be possible to enter orders in the orderbook. 3 The Exchange shall calculate the theoretical opening price (TOP) in the auction procedure and publish it on an ongoing basis. 4 No transaction and therefore no pricing shall take place.
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