The effect of corporative diversification on the capital structure of Brazilian firms

Abstracts

Este trabalho tem por objetivo verificar se a diversificação corporativa aumenta a capacidade de endividamento das firmas brasileiras por meio do cross-pledging. Utilizando o modelo de dados em painel, estimamos a relação entre alavancagem e o grau de diversificação corporativa usando uma amostra de empresas listadas na Bolsa de Valores de São Paulo (Bovespa) entre 2009 e 2011 e utilizando empresas brasileiras com acesso ao mercado internacional através de American Depositary Receipts (ADRs) no período de 2003 a 2011. Por meio dos testes empíricos, encontramos a não relação entre diversificação e endividamento em ambas as amostras, indicando que a estratégia de diversificação corporativa das empresas não deve ser utilizada como estratégia de expansão de sua capacidade de financiamento.

Garantia cruzada; Diversificação corporativa; Estrutura de capital

ARTICLES

The effect of corporative diversification on the capital structure of Brazilian firms¹

Jandir Nicoli Junior^I; Bruno Funchal^II

^IMaster in Business Administration Department of Management, FUCAPE Business School E-mail: [e-mail]

^IIPh.D., in Economics Department of Management and Accounting, FUCAPE Business School E-mail: [e-mail]

ABSTRACT

This study aims to determine whether corporate diversification increases the borrowing capacity of Brazilian companies by means of cross-pledging. Using a panel data model, we estimated the relationship between leverage and the degree of corporate diversification using a sample of companies listed on the São Paulo Stock Exchange (Bovespa) between 2009 and 2011 and Brazilian companies with access to international markets through American Depositary Receipts (ADRs) in the period 2003-2011. Using empirical tests, we found no relationship between diversification and debt in either sample, indicating that a strategy of corporate diversification should not be used as a strategy to expand a company's financing capacity.

Keywords: Cross-pledging. Corporate diversification. Capital structure.

1 Introduction

Following the earliest studies of Modigliani and Miller (1958), the choice of capital structure has been a central theme in finance research, and the use of debt in this context is essential to finance the growth of many firms. However, very indebted firms may face difficulties in obtaining external resources for new investment opportunities. Corporate diversification can provide advantages for firms funding and investment.

There are theoretically two potential benefits to firms of exploring different business lines. First, diversified firms can transfer scarce capital among divisions to finance some projects at the expense of others (Williamson, 1975; Stein, 1997; Matsusaka & Nanda, 2002). Second, the imperfect correlation effect between the cash flows of these divisions or projects reduces the risk of default and increases the firm's collateral, resulting in greater access to credit (Diamond, 1984; Lewellen, 1971, Stein, 2003). This effect is called "cross-pledging" by Tirole (2006), meaning that firms can use the income they receive from a successful project as collateral for the financing of another, provided that the projects are independent (Diamond, 1984.)

Nonetheless, Lang and Stulz (1994) and Servaes (1996) have shown that the value of conglomerates may be discounted compared to firms that keep activities focused on their core business. In Brazil, the most recent study was conducted by Carvalho, Maia and Barbedo (2012). For the conventional wisdom, this decline happens because an increase in the number of segments generates agency problems and exacerbates the internal distortion of capital (Berger & Ofek, 1995; Shin & Stulz, 1998; Rajan, Servaes, & Zingales, 2000; Scharfstein & Stein, 2000).

Recent empirical studies have focused on how diversification offers firms financing and investment advantages (Hubbard & Palia, 1999; Campelo, 2002; Hovakimian, 2011). The results of these studies indicate that efficiency in the allocation of internal resources alleviates credit constraints generated by adverse external market conditions. According to the authors, under such adverse conditions, diversification can provide investment advantages in that diversified firms can choose to allocate scarce resources to one project in preference to a less cost-effective one.

With regard to financing advantages, previous results show that in times of financial crisis, conglomerates are significantly more leveraged than focused companies (e.g., Dimitrov & Tice, 2006; Yan, Yang, & Jiao, 2010; Kuppuswamy & Villalonga, 2010). This fact is explained by diversification in corporate projects, which provides a type of insurance to investors against adverse market conditions. Thus, in general, previous studies have concluded that from a statistical perspective, diversified firms are more leveraged than focused firms (Berger and Ofek, 1995; Ahn, Denis & Denis, 2006). However, Comment and Jarrell (1995) questioned the empirical validity of these results due to the low economic significance in the association between leverage and diversification when the latter is measured using the Herfindahl index.

The broader issue that this paper sets out to address is therefore whether corporate diversification increases the financing capacity of Brazilian companies through the potential use of the cash flow income of divisions or projects as collateral to finance new investment opportunities.

Note that the contribution of this work is to investigate whether diversified firms are actually more leveraged than focused firms, not only considering periods of financial crisis but also analyzing in a systematic way, which would serve as a policy tool for business financing. Furthermore, we seek to add to discussions in the literature on the benefits of corporate diversification in Brazil, highlighting the effects of diversification on market value and corporate performance (Carvalho, Maia, & Barbedo, 2012) and addressing the possibilities generated by expanding the borrowing capacity of firms.

The cross-pledging test was conducted using a panel of 335 Brazilian companies listed on Bovespa between 2009 and 2011, providing a total of 559 observations. The time period is limited to the years 2009-2011 because the companies listed on the exchange have only been required to provide specific information about operating segments since CPC 22. Given this limitation, to test the stability of the results for the period under review, a robustness test was conducted only for ADR Level II and III companies that were listed on the U.S. market for the period 2003 to 2011, totaling 191 observations. This group of companies reported such information by segment according to the requirements of the Securities and Exchange Commission (SEC).

The financial data for the present study were collected from the Economática database, and other information necessary to calculate diversification measures was manually extracted from Form 20-F and the annual Standardized Financial Statements (SFS) of each company, available from the Bovespa website.

The econometric procedure used throughout the study was a panel model with double fixed effect. The general result was that no significant relationship was observed between diversification and the financing capacity of firms using cross-pledging. This result shows that in the Brazilian economic environment, companies have still not been able to translate the benefits of corporate diversification into their capital structure, which helps to reduce the incentive to form conglomerates. Diversification should therefore not be used as a strategy to expand the financing capacity of a business.

The remainder of the paper is organized as follows: section 2 presents the theoretical model, section 3 contains the details of the methodology used, section 4 presents the empirical results, and conclusions are offered in the final section.

2 Theoretical Model

Holmstrom and Tirole (1997) developed a model in which a firm would have incentives to diversify. This model allows the benefits of diversification to be analyzed in the case of two or more independent projects. The model presented below can also be found in Tirole (2006).

2.1 Leverage with Diversification: Cross-Pledging.

As assumptions for the model, every entrepreneur is risk-neutral and has an initial asset level that will be used in conducting an investment project. If successful, the project will generate returns R > 0, but in case of failure, the project will not produce income, i.e., R = 0. The probability of success is represented by p.

Each project requires a fixed investment of I; however, it is assumed that the initial assets of the business are insufficient to carry out the project, therefore, A > I. Thus, all entrepreneurs must borrow I - A from lenders to implement their projects.

Every project is subject to moral risk, i.e., the entrepreneur can choose to make a great effort, increasing the likelihood of project success (p_H), or he can make less of an effort, reducing the likelihood of project success (p_L). If the entrepreneur chooses a low level of effort, he receives benefits (usually non-pecuniary) as defined by B > 0 (measured in monetary units)

On the credit-supply side, lenders are in a competitive environment and are risk-neutral. For simplicity, it is assumed that the interest rate is zero. The loan agreement stipulates how the profit is divided between lenders and borrowers. The borrowers are protected by limited liability, i.e., their income cannot assume negative values, and both sides receive 0 in case of failure. In the case of success, the two parties share the profit R, where R_b goes to the entrepreneur, and R₁ goes to lenders.

Because the contract may only rely on observable variables, an incentive mechanism for the entrepreneur is defined based on receipts in the event of success. Thus, the entrepreneur should receive R_bif successful and 0 in the case of failure. For lenders, the expected value of the receipt must compensate the loan amount

Thus, the interest rateⁱ is given as follows:

The loan agreement must be structured to induce the entrepreneur to behave appropriately. Thus, the expected gain of the entrepreneur should be greater if he chooses to make greater effort than if he chooses to make less effort (this restriction is called the incentive compatibility constraint), which can be represented by the following relation:

The highest income in the event of success that can be offered to lenders without compromising the entrepreneur's incentives is therefore determined as follows:

The expected value of the cash flow generated by the project that can be given to the lender is therefore calculated as follows:

To finance a project, lenders should receive as collateral an amount as defined in (5) that is at least equal to the amount that was borrowed, I - A. This condition is called the participation constraint:

However, thus far, this relation is only a necessary condition for the financing of companies' investment projects. How would such a financing condition be modified by the inclusion of other investment projects?

To understand how borrowing capacity can be increased through diversification, consider two identical and independent projects and investments with fixed investments of the same size I. The same premise conditions as described above would be maintained.

In assuming both of the financed projects, the entrepreneur can commit to making great effort in both, in only one or in neither of the projects. There are three possible outcomes: both of the projects succeed (R₂), only one of them is successful (R₁), or neither is successful (R₀). For both of the projects to be carried out, it is necessary for the entrepreneur's incentive to be sufficient for him or her to exert great effort in both of the projects. Thus, the expected return of the projects can be described as follows:

When considering two projects in a single firm, the income from one project can be used as collateral for the other project. With respect to the loan agreement, consider a contract such that the borrower is rewarded only when both projects are successful:

i.e., there is an optimum incentive scheme that rewards the manager only in case of complete success. With an optimum incentive system, the incentive compatibility constraint that guarantees the borrower's effort in working on both of the projects is calculated as follows

The expected value of project cash flow that can be pledged as security for the lender is therefore p_HR + p_HR - p²_HR_2b:

Note that, and therefore

which ensures that the cash flow generated by the two independent projects has the power to increase the capacity of business financing (first inequality of (10)).

Cross-pledging therefore facilitates funding. However, the benefits of cross-pledging arise as a result of the diversification effect. The main argument is that because of the independence of projects, the entrepreneur (borrower) can pledge the income of one project as collateral for a second project that may fail. Thus, the funding in question establishes obligations on individual (non-related) projects because when projects are correlated and fail, income is worthless.

Thus, we may expect that firms with diverse projects tend to increase their indebtedness. We want to test in practice the reduced form of the following relationship:

and we expect to find β > 0, indicating this positive relationship between diversification and indebtedness.

3 Methodology

A panel data model with fixed double effects was used in this study. Fixed effects estimation was selected with a view to considering unobservable and time-invariant individual characteristics (fixed effect in cross-section) and common shocks to firms over time (temporally fixed effects), which can contribute to the variability of the selected dependent variable. The random-effects model was also considered as an alternative. Despite its estimator being more efficient because it does not generate consistent estimators for construction

To answer the main question of this research, i.e., whether corporate diversification increases the financing capacity of firms through cross-pledging, a relationship between the degree of diversification and leverage should be found. In this analysis, the dependent variable is the debt, represented by the natural logarithm of the sum of all of the short- and long-term balance debts, and the degree of diversification represents an explanatory variable.

The degree of diversification was defined in two steps, the first being the number of segments that the firm reports and the second and most important being the firm's Herfindahl index. The index is the sum of the squares of the percentage of net revenue for each reportable segment. Thus, if there is only one segment, the index is equal to one, and the index will be closer to zero for more diverse firms.

This methodology is similar to that used by Lang and Stulz (1994), Comment and Jarrell (1995) and Berger and Ofek (1995), all seminal studies on corporate diversification. The Herfindahl index is calculated as follows:

where is the number of segments that the company reports, is the net revenue of each business or operating segment

For the cross-pledging test, the following regression equation is therefore proposed:

where:

Debt_it - dependent variable, is the natural logarithm of the sum of all short- and long-term balance debts;

αi - model constant;

β - represents the independent-variable coefficient, i.e., the expected change in the dependent variable for a unit of change in the independent variable;

Seg - explanatory variable that represents the degree of diversification of company (i) in time period (t)

hhi - explanatory variable that represents the degree of diversification of company (i) in time period (t)

Controls_it - represents the control variables used in the model, being the attributes of company (i) in time period (t)

- represents the regression error in time period (t)

Other factors that can determine the borrowing capacity of firms were also considered. The following factors and control variables used to represent these factors were considered:

• Growth opportunities. For Myers (1977), very leveraged firms are more likely to pass up good investment opportunities. Thus, firms with future growth expectations should maintain a minimum level of debt on their balance sheets. For Lang, Ofek, and Stulz (1996), firms with more valuable growth opportunities tend to be less leveraged. Therefore, we expect a negative relationship between leverage and growth opportunities.

  Price to Book was used as a

  proxy for growth opportunities.

• Size. Larger companies tend to have a higher degree of diversification and lower risk of bankruptcy, which results in more access to credit (Lewellen, 1971; Stein, 2003; Rajan & Zingales, 1995; Rajan et al., 2000). To represent company size, the natural logarithm of the total assets of a given company was used.

• -Tangibility. Araujo, Ferreira, and Funchal (2012) argue that tangible assets are easier to leverage, thus having a direct effect on a firm's debt characteristics. Rajan and Zingales (1995) also consider that the tangible assets of the firm can be used as security (collateral) for lenders; thus, companies with larger amounts of assets would be more leveraged. Tangibility was calculated as the ratio between the firm's fixed and total assets.

• Profitability. Rajan and Zingales (1995) argue that more profitable firms tend to be more leveraged. For these authors, lenders are more willing to enter into loan agreements with more profitable companies because these ratios reflect the operational results of the company. In addition, more profitable firms can raise their level of indebtedness due to the fiscal benefits of this source of financing (Myers, 1984). Profitability is represented by the return on assets (ROA) indicator, calculated as the ratio of

  Earnings Before Interest and Taxes (EBIT) to the total assets.

• Risk of bankruptcy and liquidity. Companies with more liquidity problems face greater risks of bankruptcy (Araújo, Ferreira, & Funchal, 2012). Thus, riskier firms tend to be less leveraged because they have a higher probability of default, reducing the availability of external credit. According to Araújo et al. (2012), the risk of bankruptcy and liquidity was calculated as the ratio between the earnings before interest and taxes (EBIT) and the financial expenses.

3.1 Data and Sample.

The empirical cross-pledging test was conducted using two groups of companies. The initial sample was composed of 335 companies listed on Bovespa between the years 2009 to 2011, totaling 559 observations. The second group, the subsample, corresponded to Brazilian companies with access to the international American Depositary Receipts (ADRs) market, levels II and III. A total of 24 companies were surveyed in the period 2003-2011, providing a total of 191 observations.

The companies' consolidated financial data were obtained from Economática, and other information necessary to calculate the diversification measures was extracted from the 20-F report and the Standardized Financial Statements (SFS) that are published annually by each company and available on the BM&F/Bovespa website. Data collection was conducted manually, consulting the report of all the companies during the proposed years of observation.(Tabela 1)

4 Results

Table 2 presents the descriptive statistics of the variables used in this study. The initial sample for the cross-pledging test was composed of 335 Brazilian companies listed on Bovespa between 2009 and 2011. The subsample consisted of 24 Brazilian ADR companies with shares publicly traded on the U.S. stock exchange, observed between the years 2003 and 2011. The debt variable was expressed in millions and was divided by the total assets.

The differences in the variable values are due to the size of each sample. Regarding the degree of diversification, according to Table 2, there is high concentration within projects or operating segments of Brazilian firms. The mean of the Herfindahl index is 0.75 for the initial sample and 0.67 for the subsample.

4.1 Panel Regression.

The cross-pledging analysis verifies the impact on debt of the degree of diversification, as measured using the Herfindahl index, and the number of segments that the company reports.

The sample analyzed in Table 3 is composed of 335 companies listed on Bovespa and observed during the years 2009-2011. Both of the models were estimated in panels with fixed effects and random effects. However, after performing the Hausman test, it was not possible statistically to guarantee the consistency of the parameters estimated by random effects. Therefore, only the results of the fixed-effects model are presented.

The regression shows a statistically non-significant relationship between diversification, as measured by the HHI, and the level of corporate indebtedness. Corporate diversification would therefore appear to offer no advantage in terms of corporate finance for the firms in this sample.

This result seems at first sight contradictory to the results of the theoretical model previously presented. To really understand this result, it is necessary to analyze whether the result of the theoretical model is valid for all situations. Note that a key assumption for the validity of the results is the independence of investment projects, i.e., the cash flows generated cannot be highly correlated because, if they were, there would be no possibility of diversifying risk.

In practice, the segments reported by Brazilian firms are highly correlated sectors, and this high correlation prevents the benefits of cross-pledging because it is through the independence between projects or business units that income from one can be used as collateral to finance the construction of another, as predicted by Diamond (1984), Lewellen (1971), Stein (2003) and Tirole (2006).

A second possible explanation is the low level of indebtedness of Brazilian firms. Diversification benefits are greater for firms with high leverage levels, allowing new financing possibilities through cross-pledging. Finally, a third possible cause for the lack of correlation is the low level of diversification of the companies in the sample. Note that the mean of the Herfindahl-Hirschman Index for the sample of companies listed on Bovespa was 0.75, which is still a rather low level of diversification (HHI equal to 1 represents complete concentration).

An empirical limitation of our results is the fact that our sample is limited to the period 2009-2011. As discussed earlier, this information is available for all the companies listed on the Brazilian stock market only from 2009, due to the new requirement for segment reporting.

To test the robustness with respect to the sample period analyzed, we used the companies with ADR levels II and III for the period 2003-2011 as a sample. These companies are listed on the U.S. market and therefore divulge such information by segment according to SEC requirements. The results are shown in Table 4.

The results presented in the robustness test (Table 3) also showed no statistically significant correlation between the diversification, represented by the Herfindahl-Hirschman Index, and indebtedness of the ADR companies. These results corroborate those of Comment and Jarrell (1995), who found no statistical significance in this relationship when the degree of diversification was measured using the Herfindahl index.

The lack of correlation is therefore potentially correlated with the aforementioned factors, such as highly correlated projects, high levels of concentration of capital within projects and low levels of indebtedness.

5 Conclusions

The main aim of this study was to determine whether corporate diversification increases the borrowing capacity of Brazilian companies by means of cross-pledging. To that end, the relationship between the degree of diversification and leverage was evaluated.

Using a panel data model, no evidence was found that diversification offered financing advantages for Brazilian firms in the studied sample. This result allows us to say that the use of a corporate diversification strategy such as has been carried out in Brazil does not bring positive results in terms of business financing ability. Thus, managers who focus on increasing potential financing should consider alternatives to corporate diversification.

Based on our analyses, several possible explanations were identified for this result. The first analysis referred to the high correlation between the segments reported by the firms. Because of the independence between company projects or business units, income from one project can be used as collateral to finance another. An alternative explanation is the low level of indebtedness of firms: the benefits of diversification are higher for firms with high leverage levels, and diversification allows new possibilities for financing through cross-pledging.

Finally, the sample firms showed little diversification. The mean of the Herfindahl index was 0.75 for the sample of companies listed on Bovespa and 0.67 for the firms with shares listed on the U.S. stock exchange.

As a suggestion for future research, it would be interesting to analyze more deeply the causes of this lack of correlation between diversification and debt. One way to do this is to create a measure of correlation between the various businesses of each company and to add this element into the specification that relates diversification to indebtedness. The interaction of correlation and diversification would thus indicate whether diversified firms with uncorrelated projects do in fact enjoy the benefits of cross-pledging.

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2

. Note that the probability of success when there is greater effort is strictly higher than when low effort is made

and that while the result of the project is negotiable and observable, the choice of effort level on the part of the entrepreneur is not.

³

:

⁴

:

⁵

as the fixed effects model does, we used the Hausman test to ensure the model's statistical consistency.

⁶

, and P is the total net revenue of firm i in year t. Data on net revenues by segment for the initial sample were collected in the explanatory notes disclosed in the annual Standardized Financial Statements (SFS) of each company; however, for the subsample, the data were manually collected for each firm and year from the 20-F report

⁷

.

Publication Dates

• Publication in this collection
  21 Aug 2013
• Date of issue
  Aug 2013

History

• Received
  28 Nov 2012
• Accepted
  22 May 2013