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58-9
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Securities for which extended matching intervals have been implemented under the bylaws or rules of the TWSE refer to securities which, pursuant to the TWSE Directions for Announcement or Notice of Attention to Trading Information and Dispositions, are subject to disposition or securities under altered trading methods for which periodic call auction is also used.
The mechanism for disclosing trading information and implementing price stabilization in regard to the securites in the preceding paragraph is as below:
- During the period of trading quotes, the TWSE shall disclose on a real-time basis computed execution prices and volumes, and the computed prices and volumes of the five highest unexecuted buy quotes and five lowest unexecuted sell quotes. In addition, the TWSE shall disclose, on a real-time basis during trading hours, executed trade prices and volumes, and the prices and volumes of the five highest unexecuted buy quotes and five lowest unexecuted sell quotes.
- During the period from after the first matching of the current trading session until a certain period of time prior to market close, when the upward or downward movement of any trade price during price calculation prior to matching of each trade exceeds 3.5 percent of the previous trade price, the TWSE will immediately postpone matching of the security for a certain perod and continue to accept entries, cancellations, and changes of buy and sell quotes, and after the end of postponement of trade matching proceed with matching and execution for the security sequentially.
- The market stabilization mechanism of the one minute prior to market opening or market close is governed by Article 58-3, paragraph 8 mutatis mutandis.
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