我国上市公司财务重述对股价波动的影响研究

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3.0 李佳 2024-09-20 4 4 469.84KB 64 页 150积分
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浙江财经学院硕士学位论文
V
摘要
财务重述,是指上市公司根据相应的规范机制,修正前期发布的财务报告,
并持续披露以反映这些报告中存在差错被更正的过程。随着近几年来中国证券市
场的迅速发展,中国上市公司财务重述现象日益频繁。国外相关研究发现财务重
述带来的后果相当严重,可能引发信息使用者对财务报告质量的信任危机以及降
低投资者对证券市场的信心,使得短期内股价下跌,公司市场价值大幅度下滑,
投资者利益受损。国内学术界针对财务重述的讨论也越来越多,而与财务重述相
关的实证研究在国内却仍然较为少见。本文根据中国资本市场的特点,采用实证
的研究方法,对上市公司财务重述引起的股票市值波动进行了比较全面、系统的
研究,目的在于探讨重述对股价的影响。
本文首先在阅读大量文献的基础上,对国内外财务重述研究进行总结回顾,
就相关理论基础进行概述分析,并通过财务重述制度的国内外比较,重新界定中
国国情下的财务重述概念;其次构建本文理论模型与研究假设,以20092010
期间发生财务重述(对历史财务报告进行重述)的174家上市公司为实验样本,
用事件研究分析方法,针对重述信息发布前后的股票市场反应展开了实证讨论分
析;最后,提出实证结论、建议,以期对我国证券市场的规范发展提供一些参考。
全文内容共分为四个章节:
第一章绪论部分首先介绍了研究的背景以及现状:近几年上市公司财务丑闻
连连不断,重述问题日益严峻。财务重述带来的一系列负面反应使市场经济良好
运行受到一定程度的阻碍。在此基础上提出本文研究的理论和实际意义。随后,
列示了论文的逻辑框架以及创新点。
第二章作为全文的理论基础,首先介绍现有国内外财务重述的实证研究成果,
相对而言国外对财务重述的研究比较系统和全面。国外大多学者研究认为,财务
重述带来了一系列严重的经济后果,包括引起股票市场的负面反应,使得投资者
利益严重损毁,而国内相关实证研究还比较鲜见。其次介绍实证研究所依据的理
论假说以及其他基础理论,包括有效市场假说、资本资产定价模型、机械性假说、
会计经济后果理论、会计信息失真的经济后果等。再次就我国新准则相关规定与
美国财务重述制度、国际会计准则有关内容进行比较分析;并以此为基础,结合
我国会计发展的自身特点,对我国的财务重述进行新的诠释。
第三章关于我国上市公司财务重述对股价的影响进行实证分析,是全文的核
心部分。首先以 2009-2010 年度对历史年报进行重述的沪市 A股上市公司为研究
浙江财经学院硕士学位论文
VI
对象,经过搜集、整理、分类、筛选,得到 174 家样本公司。根据理论模型基础
以及假设检验,针对重述整体对公司股价的影响进行假设分析,并将其按发起人
和发布重述信息的性质进行分类,分析各个不同分类情形下重述对公司股价的影
响。随后,重点描述性分析统计进行财务重述的上市公司的整体特征。其次,以
T-125-6为估计窗口,得出正常收益率以及累计超额报酬率进而观察并分
析在 T-55)的 11 个交易日内重述整体及其各细分类对股票市场价格的影响。
第四章对全文研究及其结论进行总结,并且根据研究结果提出相关建议。研
究证明财务重述总体上对公司股价产生显著的负面影响,而不同类型的重述对公
司股价的影响迥异不同。据此,指出我国财务重述制度还很不完善,并就加强会
计准则和信息披露准则体系中财务重述相关制度的建设提出若干建议。最后指出
了本研究中存在的不足。
本文的创新之处是尝试对我国上市公司财务重述进行概念界定,并与年报“补
丁”进行区分。此外,目前国内关于财务重述的研究还比较少,本文借鉴前人研
究成果,运用事件研究法对财务重述的股票市值波动进行实证检验,并根据实证
结论提出相应建议,以期能有所创新,对我国证券市场发展有所裨益。但是,在
样本搜集数量、概念界定以及实证研究深度方面,由于自身知识水平不足,还有
待进一步改进。
关键词:财务重述;股票价格;信息披露;市场监管
浙江财经学院硕士学位论文
VII
ABSTRACT
The term “financial restatements” means a reference refers to the behavior that
listed companies constantly disclose relevant information in relation to revise their
previously published financial reports and analyze the impact, when they discover and
correct errors of prior periods. The phenomenon presents increasingly frequent along
with the rapid development of stock market in China in recent years. Many foreign
scholars point out that the occurrence of financial restatements has a negative effect on
the capital market, which may result in capital loss and bring the listed companies a
series of adverse economic consequences. While domestic empirical research on
financial restatements is still relatively rare. According to the characteristics of China's
capital market, this paper adopts the comprehensive and systematic analysis on the
research of the fluctuations in the stock market value caused by financial restatements,
which aims at exploring the impact of financial restatements on the stock by the
method of empirical research.
This paper consists of four chapters. They are as follows:
The first chapter is an introduction. The paper introduces the background and
current situation of the study and reviews all the major literature at home and abroad
on the research results, pointing out that the problem due to those malignant
restatements is becoming increasingly serious recent years. On that basis, the paper
proposes the positive significance of the study and outlines the logical frame of the
paper.
The second chapter is the theoretical analysis of the study. In this chapter, firstly,
the author briefly reviews some available literature at home and abroad and the
theoretical foundation of the paper. In contrast, foreign study is even more systematic
and comprehensive, showing that a series of financial restatements lead to a negative
stock market reaction and make the serious damage to the interests of investors, having
brought serious economic consequences. Then, a description of several relational
hypotheses and basic theories on which empirical research could be carried, including
efficient market hypothesis, asset pricing model and mechanical hypothesis and so on.
Next, an analysis is carried out on the comparison of System of financial restatements
between foreign countries and China. Lastly, put forward a new interpretation of
financial restatements in China's national conditions based on the above combination.
The third chapter is an empirical study on the relationship between financial
浙江财经学院硕士学位论文
VIII
restatements and stock value. In the first place, the necessity of a research on
short-term reaction of the stock market is given at the very beginning, and then on the
basis of past researches, it builds models for the study from the viewpoint of financial
restatements. Regarding the further influence given by several dummies and the nature
of the message, it classifies the sample into four categories. While in the light of the
sponsors of financial restatements, it classifies the sample into two categories. The
author carries out a research on the wave motion of stock price and probes into
different stock market reactions under various circumstances. At the end of each step
the author reports and summarizes the empirical results.
The fourth chapter serves as a summary. It gives an overview on the above
researches, pointing out the Conclusions as well as limits in the study. Moreover, it
explains how the research results shed enlightenments on theory and practice.
To sum up, the study finds that financial restatements adversely affect the
company's stock prices and it is necessary to improve the system of financial
restatements.
Keywords: Financial Restatements; Stock Price; Information Disclosure; Marker
Supervision
摘要:

浙江财经学院硕士学位论文V摘要财务重述,是指上市公司根据相应的规范机制,修正前期发布的财务报告,并持续披露以反映这些报告中存在差错被更正的过程。随着近几年来中国证券市场的迅速发展,中国上市公司财务重述现象日益频繁。国外相关研究发现财务重述带来的后果相当严重,可能引发信息使用者对财务报告质量的信任危机以及降低投资者对证券市场的信心,使得短期内股价下跌,公司市场价值大幅度下滑,投资者利益受损。国内学术界针对财务重述的讨论也越来越多,而与财务重述相关的实证研究在国内却仍然较为少见。本文根据中国资本市场的特点,采用实证的研究方法,对上市公司财务重述引起的股票市值波动进行了比较全面、系统的研究,目的在于...

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作者:李佳 分类:高等教育资料 价格:150积分 属性:64 页 大小:469.84KB 格式:PDF 时间:2024-09-20

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