卖空机制提高了中国股票市场的定价效率吗?——基于自然实验的证据

被引:322
|
作者
李志生 [1 ]
陈晨 [1 ]
林秉旋 [2 ]
机构
[1] 中南财经政法大学金融学院
[2] 美国罗德岛大学商学院
关键词
卖空; 定价效率; 融资融券; 融券卖空量;
D O I
暂无
中图分类号
F832.51 []; F224 [经济数学方法];
学科分类号
0701 ; 070104 ;
摘要
我国沪深两市于2010年3月31日推出的融资融券业务为研究卖空机制对资产定价效率的影响提供了难得的自然实验环境。本文利用2009年4月至2013年12月中国A股市场的数据,通过比较融资融券标的股票和非融资融券标的股票,以及股票加入和剔出融资融券标的前后的定价效率,发现融资融券交易的推出有效改善了中国股票市场的价格发现机制,融资融券标的股票的定价效率得到了显著提高。本文还发现,融券卖空量与定价效率之间存在正相关关系,融券卖空量越大,股票的定价效率越高。进一步研究显示,融资融券交易通过提高股票流动性、降低信息不对称程度和增加持股宽度,从而提高定价效率。
引用
收藏
页码:165 / 177
页数:13
相关论文
共 21 条
  • [11] Short-sales constraints and market quality: Evidence from the 2008 short-sales bans[J] . Alex Frino,Steven Lecce,Andrew Lepone.International Review of Financial Analysis . 2011 (4)
  • [12] Liquidity and market efficiency: A large sample study[J] . Dennis Chung,Karel Hrazdil.Journal of Banking and Finance . 2010 (10)
  • [13] The effect of price tests on trader behavior and market quality: An analysis of Reg SHO[J] . Gordon J. Alexander,Mark A. Peterson.Journal of Financial Markets . 2007 (1)
  • [14] Liquidity and market efficiency[J] . Tarun Chordia,Richard Roll,Avanidhar Subrahmanyam.Journal of Financial Economics . 2007 (2)
  • [15] Short Sales Are Almost Instantaneously Bad News: Evidence from the Australian Stock Exchange[J] . Michael J.Aitken,AlexFrino,Michael S.McCorry,Peter L.Swan.The Journal of Finance . 2002 (6)
  • [16] Investor Psychology and Asset Pricing[J] . DavidHirshleifer.The Journal of Finance . 2002 (4)
  • [17] Securities lending, shorting, and pricing[J] . Darrell Duffie,Nicolae Garleanu,Lasse Heje Pedersen.Journal of Financial Economics . 2002 (2)
  • [18] Breadth of ownership and stock returns[J] . Joseph Chen,Harrison Hong,Jeremy C. Stein.Journal of Financial Economics . 2002 (2)
  • [19] The information content of stock markets: why do emerging markets have synchronous stock price movements?[J] . Randall Morck,Bernard Yeung,Wayne Yu.Journal of Financial Economics . 2000 (1)
  • [20] Unique equilibrium in a model of self-fulfilling currency attacks
    Morris, S
    Shin, HS
    [J]. AMERICAN ECONOMIC REVIEW, 1998, 88 (03): : 587 - 597