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Analysis of the Accrual Anomaly | Accounting Dissertation

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Published: Mon, 05 Feb 2018

Sloan (1996), in a determinative paper, added the accrual anomaly in the list of the market imperfections. Since then, academics have focused on the empirical investigation of the anomaly and the connection it has with other misspricing phenomena. The accrual anomaly is still at an embryonic stage and further research is needed to confirm the profitability of an accruals based strategy net of transaction costs. The current study investigates the accrual anomaly while taking into consideration a UK sample from 1991 to 2008. In addition, the predictive power of the Fama and French (1996) factors HML and SMB is being tested along with the industrial production growth, the dividend yield and the term structure of the interest rates.

Chapter 1

Introduction

Since the introduction of the random walk theory which formed the basis for the evolvement of the Efficient Market Hypothesis (EMH hereafter) proposed by Fama (1965), the financial literature has made many advances but a piece of the puzzle that is still missing is whether the EMH holds. Undoubtedly, the aforementioned debate can be considered as one of the most fruitful and fast progressing financial debates of the last two decades.

The Efficient Market Hypothesis has met many challenges regardless of which of its three forms are being investigated. However, the weak form and semi strong hypothesis have been the most controversial. A literally vast collection of academic papers discuss, explore and argue for phenomena that seem to reject that the financial markets are efficient.

The famous label of “anomaly” has taken several forms. Many well-known anomalies such as the contrarian investment, the post announcement drift, the accruals anomaly and many others are just the beginning of an endless trip. There is absolutely no doubt that many more are going to be introduced and evidence for the ability for the investors to earn abnormal returns will be documented.

Recently, academics try to expand their investigation on whether these well-documented anomalies are actually profitable due to several limitations (transaction costs etc) and whether the anomalies are connected. Many papers are exploring the connection of the anomalies with each other proposing the existence of a “principal” misspricing that is documented into several forms.

The current study tries to look into the anomaly that was initially documented by Sloan (1996) and has been labelled as the “accrual anomaly”. The accrual anomaly can be characterised as being at an embryonic stage if the basis for comparison is the amount of publications and the dimensions of the anomaly that light has been shed on.

The facts for the accrual anomaly suggest the existence of the opportunity for investors to earn abnormal returns by taking advantage of simple publicly available information. On the other hand, accruals comprising an accounting figure have been approached from different points of view with consequences visible in the results of the academic papers. Furthermore, Stark et al (2009) challenge the actual profitability of the accrual anomaly by simply taking transaction costs into consideration.

The present paper employs an accrual strategy for a sample comprising of UK firms during 1991-2008. The aim is to empirically investigate the profitability of such strategies during the whole data sample. The methodology for the calculation of accruals is largely based on the paper of Hardouvelis et al (2009). Stark et al (2009) propose that the positive excess returns of the accruals’ strategy are based on the profitability of small stock. In order to investigate the aforementioned claim, the current study employs an additional strategy by constructing intersecting portfolios based on accruals and size.

Finally, five variables are being investigating at the second part of the study for their predictive power on the excess returns of the constructed portfolios. The monumental paper of Fama and French (1996) documented an impressive performance of two constructed variables (the returns of portfolios named HML and SMB). In addition, the dividend yield of the FTSE all share index, the industrial production growth and the term structure of the interest rates will be investigated as they are considered as potential candidates for the prediction of stock returns.

Chapter 2

Literature review

2.1. Introduction

During the last century the financial world has offered many substantial advances. From the Portfolio Theory of Markowitz (1952) to the development of the Capital Asset Pricing Model of Sharpe (1964) and Lintner (1965), and from the market Efficient Market Hypothesis (hereafter EMH), developed by Fama (1965), to the recent literature that challenges both the CAPM and the EMH, they all seem to be a chain reaction. 

The financial academic world aims to give difficult but important answers on whether markets are efficient and on how investors should allocate their funds. During the last two decades, many researchers have documented that there exist strategies that challenge the claim of the supporters of the efficient and complete markets. In this chapter, the effort will be focused on reviewing the financial literature from the birth of the idea of the EMH until the recent publications that confirm, reject or challenge it.

In a determinative paper, Fama (1970) defined efficient markets and categorised them according to the type of information used by investors. Since then, the finance literature has offered a plethora of studies that aim to test or prove whether markets are indeed efficient or not. Well known anomalies such as the post announcement drift, the value-growth anomaly or the accruals anomaly have been the theme of many articles ever since.

2.2. Review of the value-growth anomaly

We consider as helpful to review the literature for the value growth-anomaly since it was one of the first anomalies to be investigated in such an extent. In addition, the research for the value-growth anomaly has yielded a largely productive debate on whether the documented returns are due to higher risk or other source of mispricing.

Basu (1970) concluded that stocks with high Earnings to Price ratio tend to outperform stocks with low E/P. Lakonishok, Shleifer and Vishny (1994) documented that stocks that appear to have low price to a fundamental (book value, earnings, dividends etc) can outperform stocks with high price to a fundamental measure of value. Lakonishok, Shleifer and Vishny (1994) initiated a productive period that aimed to settle the dispute on the EMH and investigate the causes of such “anomalies”.

Thus, the aforementioned researchers sparked the debate not only on the market efficiency hypothesis but also on what are the sources for these phenomena. Fama and French (1992) supported the idea that certain stocks outperform their counterparts due to the larger risk that the investors bear. Lakonishok, Shleifer and Vishny (1994) supported the idea that investors fail to correctly react to information that is available to them. The same idea was supported by many researchers such as Piotroski (2001). The latter also constructed a score in order to categorise stocks with high B/M that can yield positive abnormal returns (namely, the F Score). Additionally, the “market efficiency debate “drove behavioural finance to rise in popularity.

The value-growth phenomenon has yielded many articles that aim to find evidence that a profitable strategy is feasible or trace the sources of these profits but, at the same time, the main approach adopted in each study varies significantly. Asness (1997) and Daniel and Titman (1999) examine the price momentum, while Lakonishok, Sougiannis and Chan (2001) examine the impact of the value of intangible assets on security returns.

In addition, researchers have found evidence that the value-growth strategies tend to be successful worldwide, as their results suggest. To name a few, Chan, Hamao and Lakonishok (1991) focused on the Japanese market, Put and Veld (1995) based their research on France, Germany and the Netherlands and Gregory, Harris and Michou (2001) examined the UK stock market.

It is worth mentioning that solely the evidence of such profitable strategies could be sufficient to draw the attention of practitioners, but academics are additionally interested in exploring the main cause of these arising opportunities as well as the relationship between the aforementioned phenomena (namely, the value growth, post announcement drift and the accrual anomaly). In general, two schools of thought have been developed: the one that supports the risk based explanation or, in other words, that stocks yield higher returns simply because they are riskier, and the one that supports that investors fail to recognise the correct signs included in the available information.

2.3. The accruals anomaly

2.3.1. Introduction of the accrual anomaly.

Sloan (1996) documented that firms with high (low) accruals tend to earn negative (positive) returns in the following year. Based on this strategy, a profitable portfolio that has a long position on stocks with low accruals and short position on stocks with high accruals yields approximately 10% abnormal returns. According to Sloan (1996) investors tend to overreact to information on current earnings. Sloan’s (1996) seminar paper has been characterised as a productive work that initiated an interesting to follow debate during the last decade. It is worth noting that even the very recent literature on the accrual anomaly has not reached reconciling conclusion about the main causes of this particular phenomenon and about whether a trading strategy (net of transaction costs) based solely on the mispricing of accruals can be systematically profitable.

At this point it is worth mentioning that the accruals have been found to be statistically significant and negative to predict future stock returns. On the other hand, there are papers that examine the accruals and its relations with the aggregate market. A simple example is the paper published by Hirshleifer, Hou and Teoh (2007), who aim to identify the relation of the accruals, if any, with the aggregate stock market. Their findings support that while the operating accruals have been found to be a statistical significant and a negative predictor of the stock returns, the relation with the market portfolio is strong and positive. They support that the sign of the accruals coefficient varies from industry to industry reaching a peek when the High Tech industry is taken into account (1.15), and taking a negative value for the Communication and Beer/Liquor industry.

2.3.2 Evidence for the international presence of the phenomenon.

Researchers that investigated the accruals anomaly followed different approaches. At this point, it is worth noting that the evidence shows the accrual anomaly (although it was first found to be present in the US market) to exist worldwide. Leippold and Lohre (2008) examine the accrual anomaly within an international framework. The researchers document that the accrual anomaly is a fact for a plethora of markets.

The contribution of the paper though, is the large and “complete” number of tests used, so that the possibility of pure randomness would be eliminated. Although, similar tests showed that momentum strategies can be profitable, recent methodologies used by the researchers and proposed by Romano and Wolf (2005) and Romano, Shaikh and Wolf (2008), suggest that the accruals anomaly can be partially “random”.

It is noteworthy that the additional tests make the “anomaly” to fade out for almost all the samples apart from the markets of US, Australia and Denmark. Kaserer and Klingler (2008) examine how the over-reaction of the accrual information is connected with the accounting standards applied. The researchers constructed their sample by solely German firms and their findings document that the anomaly is present in Germany too. We should mention at this point that, interestingly, prior to 2000, that is prior to the adoption of the international accounting standards by Germany, the evidence did not support the existence of the accrual anomaly. However, during 2000-2002, Kaserer and Klingler (2008) found that the market overreacted to accrual information. Hence, the authors support the idea that an additional cause of the anomaly is the lack of legal mechanisms to enforce the preparation of the financial statements according to the international accounting standards which might gave the opportunity to the firms to “manipulate” their earnings.

Another paper that focuses on the worldwide presence of the accruals mispricing is that of Rajgopal and Venkatachalam (2007). Rajgopal and Venkatachalam examined a total of 19 markets and found that the particular market anomaly exists in Australia, UK, Canada and the US. The authors’ primal goal was to identify the key drivers that can distinguish the markets where the anomaly was documented. Their evidence supports the idea that an accrual strategy is favoured in countries where there is a common law tradition, an extensive accrual accounting and a low concentration of firms’ ownership combined with weak shareholders’ rights.

LaFond (2005) also considers the existence of the phenomenon within a global framework. The author’s findings support the notion that the accrual anomaly is present worldwide. In addition, LaFond argues that there is not a unique driving factor responsible for the phenomenon across the markets. It is worth noting that LaFond (2005) documented that this particular market imperfection is present in markets with diverse methodology of accrual accounting. Findings are against the idea that the accrual anomaly has any relation with the level of the shareholders protection or a common law tradition, as suggested by Rajgopal and Venkatachalam (2007). Finally, the author suggests that, if any, it is not the different method of accrual accounting (measurement issues) that favours or eliminates the accrual anomaly, but the accrual accounting itself.

2.3.3. Further Evidence for the roots of the accruals anomaly.

Additionally, papers such as those of Thomas and Zang (2002) or Hribar (2000) decompose accruals into changes in different items (such as inventory, accounts payable etc). The findings catholically suggest that extreme changes in inventory affect returns the most. On the other hand, many articles connect the accruals with information used by investors, such as the behaviour of insiders or analysts, as the latter can be considered a major signal to the investors for a potential manipulation of the firms’ figures.

In particular, Beneish and Vargus (2002) documented that firms with high accruals and significant insider selling have substantial negative returns. Bradshaw (2001) and Barth and Hutton (2001) examine the analysts’ reports and their relation with the accruals anomaly. Their findings support that the analysts’ forecasting error tends to be larger for firms with high accruals, while analysts do not revise their forecasts when new information for accruals is available.

Gu and Jain (2006) decompose accruals into changes in inventory, changes in accounts receivable and payable and depreciation expenses and try to identify the impact of the individual components to the anomaly. Consistent with Sloan (1996), Gu and Jain (2006) document that the accrual anomaly exists at the components level. The findings are important since Desai et al (2004) supported the connection of the accrual anomaly with a single variable (cash flows from operations). The researchers suggest that the results yielded by Desai et al (2004) were highly dependent on the methodology used and thus, suggested that the accruals anomaly is “alive and well”.

Moreover, other articles try to confirm whether the anomaly is mainly caused by the wrong interpretation of the information contained in accruals. Ali et al. (2000), investigate whether the naïve investors’ hypothesis holds. Following the methodology introduced by Hand (1990) and Walther (1997), they found that for smaller firms, which are more likely to be followed by sophisticated investors, the relation between accruals and negative future returns is weaker compared to larger firms, which are followed by many analysts. Therefore, the researchers suggest that, if anything, the naïve investors’ hypothesis does not hold. In contrast to other market anomalies where findings suggest that the naïve investors hypothesis holds, the accruals anomaly is suggested as unique.

Shi and Zhang (2007) investigate the earnings fixation hypothesis suggesting that the accruals anomaly is based on the investors “fixation” or “obsession” on earnings. Their primal hypothesis is that if investors are highly based on the reports about earnings and misprice the value-relevant earnings, then the returns should be dependent not only on the accruals but also on how the stock’s price changes according to reported earnings. The researchers’ hypothesis is confirmed and finding support that an accrual strategy for firms whose stocks’ price highly fluctuates according to earnings yields a 37% annual return. Sawicki and Shrestha (2009) aim to examine two possible explanations for the accruals anomaly. Sloan (1996) proposed the fixation theory under which investors fixate on earnings and thus overvalue or undervalue information for accruals.

Kothari et al. (2006) proposed the “agency theory of overvalued equity” according to which managers of overvalued firms try to prolong the period of this overvaluation which causes accruals to increase. The paper uses the insider trading and other firm characteristics and tries to compare and contrast the two major explanations. Evidence produces bd Sawicki and Shrestha (2009) support the Kothari et al. (2006) explanation for the accrual anomaly. In a relatively different in motif paper, Wu and Zhang (2008) examine the role that the discount rates play in the accrual anomaly.

They argue that if anything, the anomaly is not caused by irrationality from the investors’side but by the rationality of firms as it is proposed by the q-theory of investment. They argue that since the discount rates fall and more projects become profitable (which makes accruals to increase) future stock returns should decline. In other words, if the capital investment correctly adjusts to the current discount rates, the accruals should be negatively correlated with the future returns and positively correlated with the current returns. The evidence of Wu and Zhang (2008) support that the accruals are negatively correlated with the future stock returns but the contribution of the paper is in that they document that current stock returns are positively correlated with the accruals.

2.3.4. The relation of the accrual anomaly with other market imperfections.

Many papers examine the relation between the accruals anomaly and other well-known anomalies such as the post announcement drift or the value-growth phenomenon. Desai et al. (2002), suggest that the “value-growth” anomaly and the accruals anomaly basically interact and conclude that the ¨accruals strategy and the C/P reflect the same underlying phenomena”. Collins and Hribar (2000) suggest that there in no link between the accruals anomaly and the “PAD”, while Fairfield et al. (2001) support that the accruals anomaly is a sub-category of an anomaly caused by the mistaken interpretation of the information about growth by the investors.

Cheng and Thomas (2006) examine the claim that the accrual anomaly is a part of a broader anomaly (and more specifically, the value-glamour anomaly). Prior literature suggested that the operating cash flows to price ratio subordinates accruals in explaining future stock returns (Deshai et al (2004)). Their evidence suggests that the Operating CF to price ratio does not subsume neither abnormal nor total accruals in future announcement returns. This particular result does not confirm the claim that the accrual anomaly is a part of a broad value-glamour anomaly.

Atwood and Xie (2005) focus on the relation of the accrual anomaly and the mispricing of the special items first documented by Burgstahler, Jiambalvo and Shevlin (2002). Their hypothesis that the two phenomena are highly related is confirmed since the researchers found that special items and accruals are positively correlated. Additionally, further tests yielded results that suggest that the two imperfections are not distinct, while the special items have an impact on how the market misprices the accruals.

Louis and Sun (2008) aim to assess the relation between the abnormal accrual anomaly and the post earnings announcement drift anomaly. The authors hypothesize that both anomalies are related to the management of the earnings and thus, they aim to find whether the two are closely connected. The findings are consistent with the primal hypothesis, as they found that “firms with large positive change of earnings that were least likely to have manipulated earning downwards” did not suffer from PEAD, while the same result was yielded for firms that had large negative change of earnings that were least likely to have managed their earnings upwards.

As supported by many researchers the value-growth anomaly and accruals anomaly might be closely related or they might even be caused by the similar or even identical roots. Fama and French (1996) support that the book to market factor captures the risk of default, while Khan (2008) suggests that in a similar pattern firms with low accruals have a larger possibility to bankrupt. Therefore, many researchers try to connect the two phenomena or to answer whether a strategy based on the accruals can offer more than what the value growth strategy offers.

Hardouvelis, Papanastopoulos, Thomakos and Wang (2009) connect the two anomalies by assessing the profitability of interacting portfolios based on the accruals and value-growth measures. Their findings support that positive returns are obtainable and magnified when a long position is held for a portfolio with low accruals while combined with stocks that are characterised as high market to book. The difference of a risked-based explanation or an imperfection of the markets is considered to be a major debate, as it can challenge the market efficiency hypothesis.

Many researchers, such as Fama and French (1996) noted that any potential profitable strategy is simply due to the higher risk that the investors have to bear by holding such portfolios. In a similar way, the profitable accruals strategies are considered as a compensation for a higher risk. Stocks that yield larger returns are compared or labelled as stocks of firms that are close to a financial distress. Khan (2000) aims to confirm or reject the risk-based explanation of the accruals anomaly.

The researcher uses the ICAPM in order to test if the risk captured by the model can explain the anomaly first documented by Sloan (1996). It is worth noting that the descriptive statistics results for the sample used showed that firms that had low accruals also had high bankruptcy risk. The contribution of the paper is that, by proposing a four factor model enhanced by recent asset pricing advances, it showed that a great portion of the mispricing that results in the accrual anomaly can be explained within a risk-based framework. Furthermore, Jeffrey Ng (2005) examines the risk based explanation for the accrual anomaly which proposes that accruals include information for financial distress.

As proposed by many papers, the accrual anomaly is simply based on the fact that investors bare more risk and thus low accrual firms have positive abnormal returns. The researcher tries to examine how and if the abnormal returns of a portfolio which is short on low accruals stocks and long on high accrual firms changes when controlling for distress risk. Evidence supports that at least a part of the abnormal returns are a compensation for bearing additional risk. Finally, the results support that the big portion of the high abnormal returns of the accrual strategy used in the particular paper is due to stocks that have high distress risk.

2.3.5. The accruals anomaly and its relation with firms’ characteristics.

A noteworthy part of the academic literature examines the existence of some key characteristics or drivers that are highly correlated with the accruals anomaly. Many researchers have published papers that aim to identify the impact of firm characteristics such as the size of the firm, characteristics that belong to the broader environment of the firms such as the accounting standards or the power of the minority shareholders. Zhang (2007) investigates whether the accrual anomaly varies cross-sectionally while being related with firms’ specific characteristics. The researcher primarily aims to explain which the main reason for the accrual anomaly is.

As Zhang (2007) mentions, Sloan (1996) attributes the accrual anomaly to the overestimation of the persistence of accruals by investors, while Fairfield (2003) argues that the accrual anomaly is a “special case of a wider anomaly based on growth”. The evidence supports the researcher’s hypothesis that characteristics such as the covariance of the employee growth with the accruals have an impact on the future stock returns. Finally, Zhang (2007) documents that that accruals co-vary with investment in fixed assets and external financing.

Louis, Robinson and Sbaraglia (2006) examine whether the non-disclosure of accruals information can have an impact on the accruals anomaly. The researchers, dividing their sample into firms that disclose accruals information on the earnings announcement and firms that do not, investigate whether there exists accruals’ mispricing. The evidence supports that for firms that disclose accruals information, the market manages to correctly understand the discretionary part of the change of the earnings.

On the contrary, firms that do not disclose accruals information are found to experience “a correction” on their stock price. Chambers and Payne’s (2008) primal aim is to examine the relation of the accrual anomaly and the auditing quality. The researchers’ hypothesis is that the accruals mispricing is related with the quality of auditing. Additionally, their findings support that the stock prices do not reflect the accruals persistence characterising the lower-quality audit firms. Finally, their empirical work finds that the returns are greater for the lower-quality audit portfolio of firms.

Palmon, Sudit and Yezegel (2008) examine the relation of the accruals mispricing and the company size. Evidence shows that company size affects the returns and, as the researchers documented, the negative abnormal returns are mostly due to larger firms while the positive abnormal returns come from the relatively small firms. Particularly, as the strategy with the highest profits they found the one that had a short position in the largest-top-accrual decile and a long position in the smallest-low-accrual decile.

Bjojraj, Sengupta and Zhang (2009) examine the introduction of the Sarbanes-Oxley Act and the FAS 146 and how these two changes affected the accrual anomaly. FAS 146 (liabilities are recognized only when they are incurred) reduced the company’s ability to “manipulate” earnings while the SOX aims to enhance the credibility of the financial statements. The evidence recognises a change on how the market conceives information about restructurings charges. The authors propose that a possible explanation is that before the introduction of SOX and the FAS 146, the market was reluctant due to the ability of the firms to manage earnings. Finally, Bjojraj, Sengupta and Zhang (2009) document that post to the FAS 146 and the SOX act, low accrual portfolios do not generate positive abnormal returns.

2.4. The applications of the accruals phenomenon and reasons why it is not arbitraged away.

The importance of the analysis of the anomalies is substantial for two reasons. Firstly, the profitability of a costless strategy challenges the EMH, especially if the strategy is based on bearing no additional risk. Secondly, managers’ incentives to manipulate the financial statements and consequently the accruals would be obvious if a profitable strategy based on such widely available information existed. Chen and Cheng (2002) find that the managers’ incentive to record abnormal accruals is highly correlated with the accrual anomaly. The hypothesis of the researchers, which their findings support, was that the investors fail to detect when the managers aim to record abnormal accruals and that may contribute to the accruals anomaly.

Richardson’s (2000) main objective is to examine whether the information contained in the accruals is utilized by short sellers. As the researcher mentions, previous articles such as that of Teoh and Wong (1999) found that sell side analysts were unable to correctly “exploit” the information contained in accruals for future returns. Richardson suggests that short sellers are considered as sophisticated enough to utilize the accruals information. Findings confirm previous work, such as that of Sloan (2000), who suggests that even short sellers do not correctly utilize the information contained into accruals.

Ali, Chen, Yao and Yu (2007) examine whether and how equity funds benefit from the accrual anomaly by taking long position into low accruals firms. The researchers aim to identify how exposed are the equity firms to such a well known anomaly and what characteristics these funds share. By constructing a measure called “accruals investing measure” (AIM), they try to document the portion of the low accruals firms into the actively managed funds. The evidence shows that generally funds are not widely exposed to low accruals firms but when they do so, they have an average of 2.83% annual return. It is worth noting that the annual return is net of transaction costs.

Finally, the side-effects of high volatility in returns and in fund flows of the equity funds that are partially based on the accrual anomaly might be the reason behind the reluctance of the managers. Soares and Stark (2009) used UK firms to test whether a profitable accrual strategy is feasible net of transactions costs. Their findings support that indeed the accrual anomaly is present in the UK market. The authors suggest that for such a strategy to be profitable, someone is required to trade on firms with small market capitalization. They also suggest that although the accruals’ mispricing seems to exist also in the UK, the transaction costs limit the profits to such an extent that the accrual anomaly could be difficult characterised as a challenge to the semi strong form of the efficient market hypothesis.

Finally, we should not neglect to mention two papers that discourse on why the markets do not simply correct the accruals anomaly. According to the classical theory, markets are so imperfect that can produce the incentive to the market to correct the “anomalies” at any point of time. Mashruwala, Rajgopal and Shevlin (2006) examined the transactions costs and the idiosyncratic risk as possible reasons of why the accrual anomaly is not arbitraged away. The researchers aimed to investigate why the market does not correct the anomaly, but also to identify whether the low accruals firms are riskier. The paper poses the question of what stops the informed investors from taking long positions into profitable stocks according to the accrual anomaly so that they can arbitrage it away. The paper examines the practical difficulty of finding substitutes so that the risk can be minimized and its relation with the accrual anomaly. Additionally, the paper investigates the transaction costs and findings support that according to the accrual anomaly, the profitable stocks tend to be the ones with low stock prices and low trading volume.

Lev and Nissim (2004) focus on the persistence of the accr


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