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我国A股市场与美股、港股的互动关系研究:基于信息溢出视角
id: 2147
Date: 20131014
status: published
Times:
Magazines
2011年第8期
Author
李红权, 洪永淼, 汪寿阳
Content
对证券市场之间互动和关联关系的研究,不仅有助于揭示市场信息的跨国(境)传播机制特别是国际金融风险的传导机制,还可以增进人们对证券市场微观结构与信息效率的认识。本文系统化地提出了洪永淼教授新近发展的信息溢出检验体系(简称Hong方法),运用该方法体系详细考察并比较了我国A股市场与美股、港股在次贷危机前后的互动关系,揭示了三者联动结构与信息传递的全景图,包括互动的方式、方向、相对强度、当期影响与多期滞后关系以及时变性。研究结果表明:(1)在三者的关系中,美股处于主导地位,并且对港股、A股市场具有金融传染效应;(2)A股市场不再是“独立市”,A股不仅能够反映美股、港股等外围市场的重要信息,而且已具有影响外围市场的能力;(3)A股与美股、港股之间的互动关系体现在均值溢出、波动率溢出、极端风险溢出等多个层面,既有线性关系也包括非线性关联方式。
JEL-Codes
Keywords
金融传染;信息溢出;信息效率;次贷危机;Granger风险因果检验
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