There are a number of differences in the information disseminated during the POS and the Continuous Trading Session and they are further explained as follows:
During the POS, the nominal price of an issue of securities will be equal to the IEP (if the IEP is available) or the previous closing price (if the IEP is not available) of the issue. During the Continuous Trading Session, the nominal price of a security determined by comparing the current bid price, current ask price and last recorded price /previous closing price, as the case may be of the security.
During the POS, the best bid price and best ask price means the IEP or, if the IEP is not available, the most competitive prices on the corresponding side (i.e. buying or selling).
During the Continuous Trading Session, the best bid price means the highest bid price and the best ask price means the lowest ask price.
During the POS, the primary queue means the queue of at-auction orders and at-auction limit orders with a specified price at or more competitive than the IEP. In case of buying, the specified price equals or is higher than the IEP; and in case of selling, the specified price equals or is lower than the IEP. If the IEP is unavailable, the primary queue is the queue of at-auction limit orders with the most competitive specified price, in the case of buying, the best bid price, and in case of selling, the best ask price.
During the Continuous Trading Session, the primary queue is the queue of orders with the most competitive specified price, the best bid price for buying, or in case of selling, the best ask price.
Apart from the IEP and IEV, the following market information is also disseminated during the POS, which includes: POS stock indicator, order imbalance information (direction and quantity), Reference Price, Stage 1 and Stage 2 price limits (upper and lower price limits) and Trading States during the POS.