Understanding Stock Price Volatility: The Role of Earnings

In an efficient capital market, asset prices vary when investors change their expectations about cash flows, discount rates, or both. Using dividends to measure cash flows, previous research shows that the aggregate dividend‐price ratio varies due to changes in expected discount rates (returns) rather than expected cash flows. In contrast, using accounting earnings instead of dividends as a measure of cash flows, this paper shows that as much as 70% of the variation in the dividend‐price ratio can be explained by changes in expected earnings. Moreover, the paper documents a significant negative correlation between expected returns and expected earnings, suggesting that variations in a common factor to both may generate significant price volatility. The results are consistent with the dividend‐policy irrelevance hypothesis.     

Earnings Volatility and Earnings Prediction: Analysis and UK Evidence

This paper confirms that US evidence of a negative relationship between earnings persistence and earnings volatility applies to UK firms over the period 1991–2010. Our analytical framework highlights the possibility that this result may reflect downward estimation bias in earnings persistence (and persistence of cash flow and accruals components of earnings) related to transitory earnings elements. Out‐of‐sample forecasts, based on models estimated for earnings volatility quartiles, suggest significant improvement in earnings forecasts for lower volatility firms. The results also suggest that the negative association between earnings persistence and volatility may be due to both estimation bias and variation in core earnings persistence.     

Earnings Volatility, Cash Flow Volatility, and Informed Trading

I examine whether earnings that are smoother or more volatile than cash flows provide or garble information. Consistent with theories that predict more informed trading when public information is less informative, I find that bid-ask spreads and the probability of informed trading are higher both when earnings are smoother than cash flows and also when earnings are more volatile than cash flows. Additional tests suggest that managers' discretionary choices that lead to smoother or more volatile earnings than cash flows garble information, on average. However, I find that informed trading is attenuated in settings in which theory suggests that discretionary smoothing or volatizing of earnings is likely to be informative.     

Does Volatility Improve UK Earnings Forecasts?

Abstract:  We investigate the relation between UK accounting earnings volatility and the level of future earnings using a unique sample comprising some 10,480 firm-year observations for 1,481 non-financial firms over the 1985–2003 period. The findings confirm the in-sample result of an inverse volatility-earnings relation only for the 1998–2003 sub-period and for the most profitable firms. The out-of-sample forecast accuracy for the top earnings quintile improves when volatility is added as a regressor to a model including only lagged earnings. The findings are consistent with the over-investment hypothesis and the view that the earnings of the most volatile firms tend to mean revert more rapidly.     

Managing Earnings with Intercorporate Investments

Abstract:  We explore to what extent firms deliberately manage their financial reports by exploiting the flexibility of generally accepted accounting principles. Using a sample of Oslo Stock Exchange-listed firms with 20–50% equity holdings in other firms, we find that firms with high financial leverage tend to maximize reported earnings from these investments through their choice between the cost method and the equity method, possibly in an attempt to reduce debt renegotiation costs or to avoid regulatory attention. In contrast, managers do not systematically bias reported earnings to extract private benefits or to signal revised expectations about future cash flows. Firms use different earnings management tools in a consistent way, as the earnings effect of the cost/equity choice is not offset by discretionary accruals.     

Earnings Volatility,Post–Earnings Announcement Drift,and Trading Frictions

We find that lower ex ante earnings volatility leads to higher Post–Earnings Announcement Drift (PEAD). PEAD is a function of both the magnitude of an earnings surprise and its persistence. While prior research has largely investigated market reactions to the magnitude of the earnings surprise, in this study we show that the persistence of the earnings surprise is equally important. A unique feature of the anomalous PEAD returns documented here concerns the association between abnormal returns and trading frictions. Besides demonstrating that firms with lower earnings volatility have higher abnormal returns, we also find that lower earnings volatility firms have lower trading frictions. Taken together, these findings imply that higher abnormal returns are associated with lower trading frictions. We exploit this implication to empirically demonstrate that PEAD returns due to earnings volatility are not concentrated in the firms with the largest trading frictions, which is in contrast to the findings in prior anomaly studies.     

The Time‐Varying Volatility of Earnings and Aggregate Consumption Growth

Time‐varying specifications for the conditional variance of earnings of U.S. households are estimated with micro data over the period 1968–92. The cross‐sectional mean of the estimated time‐varying uncertainty of individual households has a significant impact on aggregate consumption growth. As such, aggregate precautionary savings may be more important than what is suggested by the results of estimating standard regression equations for aggregate consumption growth that incorporate only lagged income growth and the real interest rate. The estimation of a buffer stock consumption model with time‐varying earnings uncertainty suggests that the precautionary savings motive is cyclical and has become less important in the 1980s.     

Earnings Smoothing,Cash Flow Volatility,and CEO Cash Bonus

Prior studies generally relate managers’ decisions to smooth earnings to their desire to maximize their overall compensation and to smooth their consumption. However, earnings smoothing could also be driven by the firm's expected benefits from reporting a smooth earnings stream. Our paper provides empirical support for the latter explanation of earnings smoothing. Specifically, we find that while CEO bonus on average increases with earnings smoothing, the increase is larger when the firm's cash flow volatility is higher. Further, CEO bonus is shielded from the negative effects of lower earnings arising from the need to report a smoother earnings stream.     

利润波动性与衍生工具使用:基于国有上市公司的实证研究

基于756家国有上市公司2012-2015年的年度数据,本文实证检验了衍生工具使用对利润波动性的影响。研究结果表明:(1)衍生工具使用显著降低利润波动性;(2)应计项目是衍生工具降低利润波动性的中介变量,且可操控性应计项目的中介效应显著,表明公司使用衍生工具进行利润平滑,而现金流的中介效应不显著;(3)衍生工具种类与经济复杂性影响利润平滑效果;(4)2014年7月1日实施的CAS39号公允价值计量准则显著削弱了衍生工具的利润平滑效果。本文首次明确了衍生工具影响利润波动性的作用机制,并发现了公允价值计量准则对于规范衍生工具使用的积极效果。     

公允价值选择权运用的盈余波动效应实证研究

文章以2008-2014年中国上市商业银行数据为样本,研究公允价值选择权的运用与盈余波动的关系,发现运用公允价值选择权整体上使盈余波动显著增加,违背了会计准则的制定初衷;仅运用于金融资产与同时运用于金融资产和负债的盈余波动增加没有显著差异.不同信息环境下公允价值选择权运用的盈余波动效应的进一步研究表明,信息披露质量较高的上市商业银行盈余波动显著增加,而信息披露质量较低的上市商业银行盈余波动增加并不显著;信息披露质量低,且同时对金融资产资产和负债运用公允价值选择权的银行表现为最低的盈余波动性.文章结论支持修订的CAS37,认为对CAS22与IFRS9持续趋同应相当谨慎.     

The Effect of Earnings Forecasts on Earnings Management

We develop a theory of the association between earnings management and voluntary management forecasts in an agency setting. Earnings management is modeled as a "window dressing" action that can increase the firm's reported accounting earnings but has no impact on the firm's real cash flows. Earnings forecasts are modeled as the manager's communication of the firm's future cash flows. We show that it is easier to prevent the manager from managing earnings if he is asked to forecast earnings. We also show that earnings management is more likely to follow high earnings forecasts than low earnings forecasts. Finally, our analysis shows that shareholders may not find it optimal to prohibit earnings management. Earlier results rationalize earnings management by violating some assumption underlying the Revelation Principle. By contrast, in our model the principal can make full commitments and communication is unrestricted. Nonetheless, earnings management can be beneficial as it reduces the cost of eliciting truthful forecasts.     

Product Mix and Earnings Volatility at Commercial Banks: Evidence from a Degree of Total Leverage Model

We construct a degree-of-total-leverage framework to test whether and how shifts in product mix affect earnings volatility at 472 U.S. commercial banks between 1988 and 1995. Our framework, which accounts for cost and revenue synergies not captured in most previous studies, conceptually links earnings volatility to revenue volatility, expense fixity, and product mix. We find that replacing traditional lending activities with fee-based activities—an ongoing trend that may be strengthened by recent financial modernization—is associated with both higher revenue volatility and higher total leverage, which in this framework implies higher earnings volatility. Journal of Economic Literature Classification Numbers: G21, G32, D24.     

The Variability of Earnings and Non-Earnings Information and Earnings Prediction

This paper examines the performance of a 'composite' model of earnings prediction that integrates current earnings and current price as predictors of next year's earnings. The results show that current earnings (current price) play a key role in predicting future earnings when the ratio of earnings variance to price variance is low (high). The composite model is superior to univariate time-series models in out-of-sample predictive accuracy for the overall sample, and is substantially so for the group of firms with a high ratio of earnings variance to price variance.     

The Effect of Earnings Management on the Asymmetric Timeliness of Earnings

Abstract:   Is earnings management affecting (driving) the measures of earnings conservatism? Ball et al. (2000) point out that the asymmetry in the recognition of good and bad news in earnings (faster recognition of bad news: earnings conservatism) is more pronounced in common‐law than in code‐law based accounting regimes. However, comparative studies on earnings conservatism in Europe have failed to identify significant differences between common‐law and code‐law based countries. We argue that in code‐law based countries managers have incentives to reduce earnings consistently. This enhances the association between earnings and returns in bad news periods. We find that after controlling for discretionary accruals, the differential earnings response to bad news in Germany and France decreases significantly.     

盈余管理真相

盈余管理是公司管理层实施战略管理的重要工具之一,合格的CF0并不一定必须去做盈余管理,但盈余管理却是CFO工作的重要组成部分。如果把盈余管理当作粉饰报表的工具,那就危险了。     

The Determinants of Asymmetric Volatility

Volatility in equity markets is asymmetric: contemporaneousreturn and conditional return volatility are negatively correlated.In this article I develop an asymmetric volatility model wheredividend growth and dividend volatility are the two state variablesof the economy. The model allows both the leverage effect andthe volatility feedback effect, the two popular explanationsof asymmetry. The model is estimated by the simulated methodof moments. I find that both the leverage effect and volatilityfeedback are important determinants of asymmetric volatility,and volatility feedback is significant both statistically andeconomically.     

The Valuation of Volatility Options

This paper examines the valuation of European- and American-style volatilityoptions based on a general equilibrium stochastic volatility framework.Properties of the optimal exercise region and of the option price areprovided when volatility follows a general diffusion process. Explicitvaluation formulas are derived in four particular cases. Emphasis is placedon the MRLP (mean-reverting in the log) volatility model which has receivedconsiderable empirical support. In this context we examine the propertiesand hedging behavior of volatility options. Unlike American options,European call options on volatility are found to display concavity at highlevels of volatility.     

The Use of Unsigned Earnings Quality Measures in Tests of Earnings Management

This paper examines the implications of using the absolute value of discretionary accruals when testing for earnings management. First, we analytically develop the mean and variance of the distribution of absolute discretionary accruals, and show that the expected value is an increasing function of the variance in the underlying error term from the first‐stage discretionary accrual estimation model. Second, we highlight several firm characteristics that are related to the error variance in discretionary accrual estimation models. Using simulations, we show that correlation between the earnings management partitioning variable and these firm characteristics leads to an overrejection of the null hypothesis of no earnings management. Third, we provide research design suggestions to help researchers mitigate the potential bias arising from the use of unsigned measures of earnings management. Using these suggestions, we replicate a recent study, and demonstrate that the inferences change after controlling for operating volatility.     

Nonlinear Drift And Stochastic Volatility: An Empirical Investigation Of Short-Term Interest Rate Models

In this article I provide new evidence on the role of nonlinear drift and stochastic volatility in interest rate modeling. I compare various model specifications for the short‐term interest rate using the data from five countries. I find that modeling the stochastic volatility in the short rate is far more important than specifying the shape of the drift function. The empirical support for nonlinear drift is weak with or without the stochastic volatility factor. Although a linear drift stochastic volatility model fits the international data well, I find that the level effect differs across countries.     

Fundamental Information and Monetary Policy: The Implications for Earnings and Earnings Forecasts

Building on the work of Lev and Thiagarajan (1993) and Abarbanell and Bushee (1997 and 1998) this paper tests whether market-based information including dividend yield (Fama and French, 1998), firm size (Reinganum, 1981), and the ratio of book value to market value (Fama and French, 1992) add explanatory power to accounting data for predicting future earnings. The paper also tests whether earnings changes and the predictability of those changes are conditioned on monetary policy. It is found that the ratio of book value to market value is significantly related to earnings changes. Analyst forecast accuracy differs depending on monetary policy regime, but this difference is not due to differing interpretation of fundamental signals on financial statements appearing under differing monetary policy regimes. It is also found that there is a significant relation between monetary policy, earnings changes, and the level of signals concerning earnings changes.