Short-Sale Constraints and Stock Prices: Evidence from Implementation of Securities Refinancing Mechanism in Chinese Stock Markets

Qualified Securities for Short-sale Refinancing (QSSR) is a unique trading mechanism that has exogenously increased the supply of loanable securities in Chinese stock markets. Using difference-in-differences (DID) methodology, this paper is the first to investigate whether and to what extent additio...

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Main Authors: Larry Su, Elmina Homapour, Francisco Chiclana
Format: Article
Language:English
Published: MDPI AG 2022-09-01
Series:Mathematics
Subjects:
Online Access:https://www.mdpi.com/2227-7390/10/17/3141
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author Larry Su
Elmina Homapour
Francisco Chiclana
author_facet Larry Su
Elmina Homapour
Francisco Chiclana
author_sort Larry Su
collection DOAJ
description Qualified Securities for Short-sale Refinancing (QSSR) is a unique trading mechanism that has exogenously increased the supply of loanable securities in Chinese stock markets. Using difference-in-differences (DID) methodology, this paper is the first to investigate whether and to what extent additions to the QSSR eligibility list affect short selling activities and stock price behaviors. The paper finds that stocks added to the QSSR list exhibit better liquidity and less negative skewness in returns than non-QSSR stocks. However, QSSR stocks are more volatile and display a higher frequency of extreme negative returns. In addition, on average, QSSR stocks experience larger negative abnormal returns (ARs) and cumulative abnormal returns (CARs) relative to non-QSSR stocks, and the difference in CARs is positively related to investor heterogeneity. The results indicate that short selling has mixed effects on stock prices. Removing short-sale constraints can improve liquidity and reduce price bubbles, but can also increase return volatility and amplify market crashes.
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spelling doaj.art-31795bf46a564115adad6594c883f8b32023-11-23T13:39:10ZengMDPI AGMathematics2227-73902022-09-011017314110.3390/math10173141Short-Sale Constraints and Stock Prices: Evidence from Implementation of Securities Refinancing Mechanism in Chinese Stock MarketsLarry Su0Elmina Homapour1Francisco Chiclana2School of Business, Universiti Teknologi Brunei, Bandar Seri Begawan BE1410, BruneiNottingham Business School, Nottingham Trent University, Nottingham NG1 4FQ, UKInstitute of Artificial Intelligence, School of Computer Science and Informatics, De Montfort University, Leicester LE1 9BH, UKQualified Securities for Short-sale Refinancing (QSSR) is a unique trading mechanism that has exogenously increased the supply of loanable securities in Chinese stock markets. Using difference-in-differences (DID) methodology, this paper is the first to investigate whether and to what extent additions to the QSSR eligibility list affect short selling activities and stock price behaviors. The paper finds that stocks added to the QSSR list exhibit better liquidity and less negative skewness in returns than non-QSSR stocks. However, QSSR stocks are more volatile and display a higher frequency of extreme negative returns. In addition, on average, QSSR stocks experience larger negative abnormal returns (ARs) and cumulative abnormal returns (CARs) relative to non-QSSR stocks, and the difference in CARs is positively related to investor heterogeneity. The results indicate that short selling has mixed effects on stock prices. Removing short-sale constraints can improve liquidity and reduce price bubbles, but can also increase return volatility and amplify market crashes.https://www.mdpi.com/2227-7390/10/17/3141short saleshort-selling banstock pricesdifference-in-differencesChinese stock markets
spellingShingle Larry Su
Elmina Homapour
Francisco Chiclana
Short-Sale Constraints and Stock Prices: Evidence from Implementation of Securities Refinancing Mechanism in Chinese Stock Markets
Mathematics
short sale
short-selling ban
stock prices
difference-in-differences
Chinese stock markets
title Short-Sale Constraints and Stock Prices: Evidence from Implementation of Securities Refinancing Mechanism in Chinese Stock Markets
title_full Short-Sale Constraints and Stock Prices: Evidence from Implementation of Securities Refinancing Mechanism in Chinese Stock Markets
title_fullStr Short-Sale Constraints and Stock Prices: Evidence from Implementation of Securities Refinancing Mechanism in Chinese Stock Markets
title_full_unstemmed Short-Sale Constraints and Stock Prices: Evidence from Implementation of Securities Refinancing Mechanism in Chinese Stock Markets
title_short Short-Sale Constraints and Stock Prices: Evidence from Implementation of Securities Refinancing Mechanism in Chinese Stock Markets
title_sort short sale constraints and stock prices evidence from implementation of securities refinancing mechanism in chinese stock markets
topic short sale
short-selling ban
stock prices
difference-in-differences
Chinese stock markets
url https://www.mdpi.com/2227-7390/10/17/3141
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AT elminahomapour shortsaleconstraintsandstockpricesevidencefromimplementationofsecuritiesrefinancingmechanisminchinesestockmarkets
AT franciscochiclana shortsaleconstraintsandstockpricesevidencefromimplementationofsecuritiesrefinancingmechanisminchinesestockmarkets