RE: RNS19 Nov 2019 21:36
Google: Should the preceding auction fail to generate a price within a predetermined percentage above or below the reference price, which is the price just before the stock went into the auction, then a price monitoring extension RNS is automatically released to the market, and the Call Period is extended by another 5 minutes. This extra 5 minutes provides participants the chance to review the prices of the orders that have been entered and if appropriate add, delete or amend.
Should this additional period still fail to generate a reliable price, then a second price monitoring extension is released to the market, and the Call Period is extended by another 5 minutes. On this occasion, should the additional period also fail to generate a price within tolerance levels, then this price will be taken forward and the orders that can be matched will be executed in the uncrossing.