宏观经济波动的微观基础:基于股权配给角度的分析

当宏观经济进入衰退阶段,由于上市公司的股权配给,上市公司投资的边际破产成本上升,导致上市公司的投资下降,在投资乘数原理和加速数原理的相互作用下,会使宏观经济衰退更加严重,宏观经济陷入经济衰退与股权配给相互作用的恶性循环中,宏观经济衰退的程度会进一步加大。当宏观经济进入繁荣阶段,呈现与上述相反的过程,会导致宏观经济持续过度繁荣。因此,股权配给是宏观经济波动的加速器。我国的现实是,从微观角度分析,上市公司具有强烈的股权融资偏好;从宏观上看,政府进行股权配给。两者的共同作用,使股权配给具有平抑宏观经济波动的功能。     

具有中国特色的证券市场投资者结构缺陷问题研究

我国证券市场经历了近20年的发展,已经日趋完善和成熟,取了很大的成功,并赢得了国际社会的认可和信任。但是由于我国的证券市场相对于发达国家发展了百年的市场来说只能是刚刚起步,在发展的过程中难免会有不足之处。目前我国证券市场最大的问题之一就是投资者结构比例不平衡的问题。     

股份回购与国有股减持

股份回购是西方发达国家成熟资本市场中常用一种的运作方法，在我国则是一种金融创新。我国股份回购有着特殊的使命-减持国有股。本文着重分析股份回购在国有股减持中的重要作用、运用条件、运用方式以及运用效果的实证研究。     

国内外股票期权激励机制比较研究

通过介绍美国和日本的股票期权激励机制,并与我国的股票激励机制进行比较分析,提出了关于我国股票期权在公司治理、市场建设和法律法规方面的建议。     

宏观经济与股票市场：来自A股的实践

近年来中国股票市场运行与宏观经济表现之间呈现出复杂的关系,股票市场自身的波动更是招致颇多争议。本文运用因果关系等分析方法进行实证研究,力图探求这种复杂关系背后的本质。从实际上证指数和经济变量绝对值来看,笔者利用相关数据进行了实证检验,发现GDP值、社会货币供应量这2个经济变量对整个股票市场的具有明显影响,上证指数与经济变量之间存在显著的因果关系。     

小波分析在波浪理论中的应用研究

利用小波分析方法,对股市交易过程中的大量数据进行有效分析处理,得到隐藏在数据中的主要特征和趋势,使波浪理论中浪型的划分变得容易,为股票投资者提供一种可信的分析工具。     

The Walk‐down to Beatable Analyst Forecasts: The Role of Equity Issuance and Insider Trading Incentives*

It has been alleged that firms and analysts engage in an "earnings‐guidance game" where analysts first issue optimistic earnings forecasts and then "walk down" their estimates to a level that firms can beat at the official earnings announcement. We examine whether the walk‐down to beatable targets is associated with managerial incentives to sell stock after earnings announcements on the firm's behalf (through new equity issuance) or from their personal accounts (through option exercises and stock sales). Consistent with these hypotheses, we find that the walk‐down to beatable targets is most pronounced when firms or insiders are net sellers of stock after an earnings announcement. These findings provide new insights on the impact of capital‐market incentives on communications between managers and analysts.     

The determinants of the price impact of block trades: further evidence

This article extends previous literature which examines the determinants of the price impact of block trades on the Australian Stock Exchange. As previous literature suggests that liquidity exhibits intraday patterns, we introduce time of day dummy variables to explore time dependencies in price impact. Following theoretical developments in previous literature, the explanatory power of the bid–ask spread, a lagged cumulative stock return variable and a refined measure of market returns are also examined. The model estimated explains approximately 29 per cent of the variation in price impact. Block trades executed in the first hour of trading experience the greatest price impact, while market conditions, lagged stock returns and bid–ask spreads are positively related to price impact. The bid–ask spread provides most of the explanatory power. This suggests that liquidity is the main driver of price impact.     

Managerial discretion in distressed firms

This study examines the earnings management behaviour of 455 distressed US firms that filed for bankruptcy during the period 1986–2001. We examine (a) possible earnings management during the years prior to bankruptcy-filing, (b) whether qualified audit opinions cause conservative earnings management behaviour, (c) whether earnings management differs between firms that discontinued operations and firms that survived thereafter, and (d) the effect of earnings management on subsequent stock returns. Our results are consistent with downwards earnings management 1 year prior to the bankruptcy-filing. Results also show that (a) firms receiving unqualified audit opinions 4 or 5 years prior to the bankruptcy-filing event manage earnings upwards in subsequent years, consistent with Rosner [2003. Earnings manipulation in failing firms. Contemporary Accounting Research 20, 361–408], (b) more conservative earnings management seems to be related to the qualified audit opinions rendered in the preceding year, (c) firms with long-term negative accruals the year of bankruptcy-filing have a greater chance to survive thereafter, and (d) more pronounced (negative) earnings management is associated with more negative (next year's) subsequent returns.     

沪深权证价格偏离分析

沪深证券市场权证理论价格与权证市场价格的偏离现象主要不是理论定价公式的输入变量误差导致的,而是因为股票收益率与权证收益率之间的相关系数与理论预期不一致,乃至相冲突所导致的。权证理论价格与市场价格偏离的主要原因是在当前的交易制度安排下,由于市场限制(摩擦)抑制了套利交易,导致权证市场投机交易占主导,以致权证市场价格偏离长期均衡水平。