What are Dynamic Thresholds (price range of D/Floor and D/Ceiling) that I see when I enter an order? 

The Dynamic Threshold is the maximum allowable price difference between an update in the Last Traded Price (LTP) of a given security or group of securities and its preceding LTP that is equal to a percentage set by the Exchange, subject to the classification of a security or a group of securities based on its trade frequency (Section VI of the Implementing Guidelines of the Revised Trading Rules of PSE).

Listed Securities are classified in three clusters and subject to different Dynamic Threshold as follows:

SECURITY CLUSTERTRADE FREQUENCY QUALIFIERDYNAMIC THRESHOLD
ATraded 20 times or less in the past six months20%
BTraded 500 times or less but greater than 20 times in the past six months15%
CTraded more than 500 times in the past six months10%

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