Effects of Preferred Stock Re-rating on Common Stock Prices: Further Evidence

This study examines the price reactions of common stocks to changes in preferred stock ratings, with focuses on firms with less information available in the market as well as on firms with a relatively larger proportion of preferred stock financing. Emphasis on differential information and the relative size of preferred stocks across firms provide a more powerful test of the effect of rating changes on stock prices. Contrary to previous studies that report no price effect on common stocks due to preferred stock re-ratings, these results show that for low-information firms and for firms with a larger proportion of preferred stocks in their capital structure, a preferred stock rating downgrade exerts significant negative price effect on common stocks during the two-day announcement period. Our findings also have implications for future studies of other firm-specific events such as security offerings, stock repurchases, and convertible calls.     

The Ex-Dividend Day Behavior of Canadian Stock Prices: Tax Changes and Clientele Effects

With some simple assumptions the ex-dividend day price drop and the associated dividend can be used to measure the market's marginal tax rate. Previous research has estimated the implied tax rate for the U.S. This paper extends the analysis to Canada, where the tax treatment of dividends and capital gains is completely different from that in the U.S. The paper also presents estimates from 1970–80 to include four distinct periods when the tax treatment was different. Hence, we include an implied test of market efficiency as well as those for the “relevance” of taxes and the existence of tax based dividend clienteles.     

The Effect of Options on Stock Prices: 1973 to 1995

I show that the effect of option introductions on underlying stock prices is best described by a two-regime switching means model whose optimal switch date occurs in 1981. In accordance with previous studies, I find positive abnormal returns for options listed during 1973 to 1980. By contrast, I find negative abnormal returns for options listed in 1981 and later. Possible causes for this switch include the introduction of index options in 1982, the implementation of regulatory changes in 1981, and the possibility that options expedite the dissemination of negative information.     

股票价格对信贷冲击的动态影响

本文使用基于马尔科夫区制转移方法的协整模型(MS-ECM和MS-VECM),以长期信贷需求方程为基础,研究了我国信贷市场的稳定状态与非稳定状态。实证结果显示:在信贷市场的非稳定状态中,我国股票价格变化对信贷冲击形成了较为明显的动态影响。这种动态影响的出现除了与西方学者所关注的信贷配给效应有关以外,还与信贷资金流入股市有着密切联系。另外,实体经济与信贷的动态互动可以显著增加信贷冲中击的持续性。基于以上结论,本文提出我国应该整合各种监管资源和政策工具,对股票价格变动引起持续性信贷冲击的现象进行动态预防和监控。     

融券对我国股票价格的影响

本文通过测量我国股票价格在实行融券前后的显著变化,并比较回报率横截面分布特征的变化来检验两种理论假说:1)融券使股价降低;2)投资者意见分歧加大会导致股价更大程度下跌。研究结果支持这些假说,并表明我国股市投资者预期到了融券对股价的负面影响,股价在融券宣告日前后就开始向下调整。对融券余量数据的分析显示,融券活动在起初并不活跃,导致股价在此期间下跌的主要原因是市场对融券预期的负面信息效应。     

货币供应量对股票价格的影响研究——一个基于VAR模型的实证分析

货币政策是影响股票价格的重要因素之一。本文采用向量自回归模型,通过Johanson协整检验、Granger因果检验、脉冲响应函数和方差分解等计量经济学手段,研究了狭义货币供应量M1对我国股票价格的影响。研究结果表明,货币供应量对股票价格的影响不显著。     

The Impact of Renminbi Appreciation on Stock Prices in China

Since removal of the peg in July 2005, China has entered a new era of a managed floating exchange rate system. Although many observers have raised concerns about the impact of such a policy change on China's trade surplus, less attention has been paid to its effects on financial markets. This paper investigates the impact of recent renminbi appreciation on stock prices in China since removal of the peg, using threshold cointegration and momentum threshold error-correction model (M-TECM). The results clearly illustrate that no short-run causal relation exists, and an asymmetric causal relationship running from the renminbi/U. S. dollar exchange rate to Chinese Shanghai A-share stock prices in the long run is based on M-TECM. Policy and the broader implications of the findings are discussed.     

The Effect of Demand on Stock Prices: Evidence from Index Fund Rebalancing

I examine the effect of demand on stock prices by analyzing the conversion of the TIPs 35 and TIPs 100 exchange‐traded funds into the i60 Fund. This conversion occurred at the Toronto Stock Exchange on March 6, 2000. Forty stocks of the TIPs 100 Fund that were not members of the new units of the i60 Fund were sold to complete this conversion. I find that a decrease in demand produced a permanent stock price decline, which was accompanied by significant abnormal trading volume. The results provide support for the downward‐sloping demand curve hypothesis.     

DotCom Mania: The Rise and Fall of Internet Stock Prices

This paper explores a model based on agents with heterogenous beliefs facing short sales restrictions, and its explanation for the rise, persistence, and eventual fall of Internet stock prices. First, we document substantial short sale restrictions for Internet stocks. Second, using data on Internet holdings and block trades, we show a link between heterogeneity and price effects for Internet stocks. Third, arguing that lockup expirations are a loosening of the short sale constraint, we document average, long‐run excess returns as low as ?33 percent for Internet stocks postlockup. We link the Internet bubble burst to the unprecedented level of lockup expirations and insider selling.     

An International Analysis of Earnings, Stock Prices and Bond Yields

Abstract:  This paper assesses the contemporaneous relationship between stock prices, earnings and long-term government bond yields for a large number of countries. The time period of our data spans several decades. In a time series framework our analysis first tests the presence of a long-term contemporaneous relationship between these three variables (the so-called Fed model). Next, we assess if government bond yields play a significant role in the long-run relationship. Our empirical results question the validity of the Fed model in the sense that we show that long-term market movements are mainly driven by the earnings yield and not the differential between bond and earnings yields. As such, our analysis validates the results of Asness (2003) for a much larger collection of countries while using a dynamic time series (cointegration) framework. Finally, we also show that changes in long-term government bond yields have a short-term impact on stock prices.     

我国融资融券担保制度的法律困境与解决思路

2006年6月30日，中国证监会发布了《证券公司融资融券业务试点管理办法》，为我国融资融券业务的开展提供了具体的法律依据。《管理办法》在构建融资融券的担保制度时，充分借鉴了美国等国家和地区的做法，创造性地引入了让与担保。然而，当前我国法律尚未确立让与担保制度，这就导致了我国按照让与担保模式设定的融资融券担保制度陷入了法律困境。本文试以境外市场的成功经验为借鉴，探讨我国现行融资融券担保制度法律困境的解决思路。     

The Relation between Stock Prices and Accounting Information

The functional relation between expected stock prices and accounting information is analyzed through the theory of inverse probability. The approach models the mean of the posterior distribution for price, given the information that the accounting process provides. The implications of alternative assumptions about accounting measurement error and the unconditional price distribution are discussed. Our most refined model is consistent with recent empirical evidence showing convexity in the relationship between price and accounting information. Empirical tests, while exploratory, provide further evidence of a nonlinear relation between stock price and accounting measures of earnings and book value.     

Framing Effects in Stock Market Forecasts: The Difference Between Asking for Prices and Asking for Returns

Studies analyzing return expectations of financial market participantslike fund managers, CFOs or individual investors are highlyinfluential in academia and practice. We argue and show thatthe results in these surveys above are easily influenced bythe elicitation mode of return expectations. Surveys that askfor future stock price levels are more likely to produce meanreverting expectations than surveys that directly ask for futurereturns. Furthermore, we conduct a questionnaire study thatexplicitly analyzes whether the specific elicitation mode affectsreturn expectations in the above direction. In our study, subjectswere asked to state mean forecasts for seven time series. Usinga between subject design, one half of the subjects was askedto state future price levels, the other group was directly askedfor returns. We observe a highly significant framing effect.For upward sloping time series, the return forecasts statedby investors in the return forecast mode are significantly higherthan those derived for investors in the price forecast mode.For downward sloping time series, the return forecasts givenby investors in the return forecast mode are significantly lowerthan those derived for investors in the price forecast mode.We argue that this finding is consistent with behavioral theoriesof investor expectation formation based on the representativenessheuristic.     

股票价格"虚拟"问题的研究

从现代市场经济的视角看,股票作为一种能够为投资者带来一定收入的资本所有权证书,是最典型的虚拟资本形式。作为虚拟资本的股票价格不外乎是一种与利息率相关的股息收入的资本化。由于利息率是股票价格一个决定性因素,致使股票价格与利息率相关性极强,而与其净资产的高低相关性较弱。因此,在证券市场上,股票价格往往高于其真实价格(每股净资产价值),从而具有了“虚拟”成分。这样,股票价格虚拟运动便成为一种独特的经济范畴。为此,只有注重对股票价格虚拟的合理范围的判断,确定出股票价格可投资的界限,才能以价值投资的理念,引导市场的投资行为,促进中国股市健康发展。     

The Adjustment of Stock Prices to Information About Inflation

This paper analyzes the reaction of stock prices to the new information about inflation. Based on daily returns to the Standard and Poor's composite portfolio from 1953–78, it seems that the stock market reacts negatively to the announcement of unexpected inflation in the Consumer Price Index (C.P.I.), although the magnitude of the reaction is small. It is interesting to note that the stock market seems to react at the time of announcement of the C.P.I., approximately one month after the price data are collected by the Bureau of Labor Statistics.     

证券市场价格与货币供应量关系实证研究

分析表明，M0和M2的变化可以引起上证综指的变化，而M1和上证综指则没有相互因果关系，同时，上证综指的变化并没有导致货币供应量的变化。     

The Impact of Analysts' Forecast Errors and Forecast Revisions on Stock Prices

Abstract:  We present a comprehensive analysis of the association between stock returns, quarterly earnings forecast errors, and quarter-ahead and year-ahead earnings forecast revisions. We find that forecast errors and the two forecast revisions have significant effects on stock prices, indicating each conveys information content. Findings also show that the fourth quarter differs from other quarters—the relative importance of the forecast error (quarter-ahead forecast revision) is lower (higher). We also find a marked upward shift over time in the forecast error and forecast revision coefficients, consistent with the I/B/E/S database reflecting an improved quality of both earnings forecasts and actual earnings.