{"title":"Are pre-opening periods important? Evidence from Chinese market lunch breaks","authors":"Gang Chu , John W. Goodell , Xiao Li","doi":"10.1016/j.pacfin.2024.102577","DOIUrl":null,"url":null,"abstract":"<div><div>The Chinese stock market design offers a unique opportunity to examine the impact of pre-open call auctions on price efficiency and price discovery. By comparison, we find that opening prices of morning sessions, as determined by call auctions, are more efficient and informative than prices of the afternoon session, as determined by a continuous auction mechanism. Using corporate announcements to compare the speed of price adjustments in response to overnight information versus lunch break information, we find that prices react much more rapidly to overnight announcements, consistent with pre-open call auctions facilitating price discovery to announcements. Results also suggest that corporate announcements enhance stock liquidity with the effect of overnight announcements on liquidity being stronger than the effects of lunch break announcements. Overall, our evidence highlights the utility of pre-open call auctions.</div></div>","PeriodicalId":48074,"journal":{"name":"Pacific-Basin Finance Journal","volume":"88 ","pages":"Article 102577"},"PeriodicalIF":4.8000,"publicationDate":"2024-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Pacific-Basin Finance Journal","FirstCategoryId":"96","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0927538X24003299","RegionNum":2,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"BUSINESS, FINANCE","Score":null,"Total":0}
引用次数: 0
Abstract
The Chinese stock market design offers a unique opportunity to examine the impact of pre-open call auctions on price efficiency and price discovery. By comparison, we find that opening prices of morning sessions, as determined by call auctions, are more efficient and informative than prices of the afternoon session, as determined by a continuous auction mechanism. Using corporate announcements to compare the speed of price adjustments in response to overnight information versus lunch break information, we find that prices react much more rapidly to overnight announcements, consistent with pre-open call auctions facilitating price discovery to announcements. Results also suggest that corporate announcements enhance stock liquidity with the effect of overnight announcements on liquidity being stronger than the effects of lunch break announcements. Overall, our evidence highlights the utility of pre-open call auctions.
期刊介绍：
The Pacific-Basin Finance Journal is aimed at providing a specialized forum for the publication of academic research on capital markets of the Asia-Pacific countries. Primary emphasis will be placed on the highest quality empirical and theoretical research in the following areas: • Market Micro-structure; • Investment and Portfolio Management; • Theories of Market Equilibrium; • Valuation of Financial and Real Assets; • Behavior of Asset Prices in Financial Sectors; • Normative Theory of Financial Management; • Capital Markets of Development; • Market Mechanisms.
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