the effects of bankruptcy filings on the competitors' earnings
TRANSCRIPT
The effects of bankruptcy filings on the
competitors’ earnings
Zahid Iqbal*
School of Business, Texas Southern University, Houston, TX 77004, USA
Received 25 July 2000; received in revised form 19 December 2000; accepted 19 March 2001
Abstract
In this paper, we investigate whether a bankruptcy filing explains the earnings of the bankrupt
firm’s competitors. We examine contagion and competitive effects on competitors’ earnings for a
sample of 165 bankruptcies filed between 1991 and 1996. Our findings show that the competitors
experience an increase in return on equity (ROE) in concentrated industries than in less concentrated
industries, suggesting a competitive effect. In addition, the competitive effect is observed in
industries with high leverage and multiple bankruptcy filings. Our data fail to provide support for
the contagion effect of bankruptcy on competitors’ earnings. D 2002 Elsevier Science Inc. All
rights reserved.
JEL classification: G33
Keywords: Bankruptcy; Earnings; Contagion effect; Competitive effect
1. Introduction
Prior empirical studies observe that a bankruptcy filing has a significant effect on the rival
firm’s stock prices. Lamy and Thompson (1986) conclude that Penn Square failure resulted in
negative stock price reactions among other banks. Gay, Timme, and Yung (1991) find
1059-0560/02/$ – see front matter D 2002 Elsevier Science Inc. All rights reserved.
PII: S1059 -0560 (01 )00089 -2
* Tel.: +1-713-313-7737; fax: +1-713-313-7705.
E-mail address: [email protected] (Z. Iqbal).
International Review of Economics and Finance
11 (2002) 85–99
significant negative stock price reactions around bank failures in the banking industry in
Hong Kong. Later studies by Cheng and McDonald (1996), Ferris, Jayaraman, and Makhija
(1997), and Lang and Stulz (1992) show that the industry effects of bankruptcy depend on
certain industry characteristics. Lang and Stulz conclude that a negative stock price reaction
or contagion effect indicates that other firms in the industry experience financial difficulties as
well and that this effect is larger in industries with similar cash flow characteristics. There can
also be a positive reaction or competitive effect indicating that the competitors benefit at the
expense of the financial inefficiencies of the bankrupt firms. The competitive effect is larger
in highly concentrated industries.
Ferris et al. (1997) find evidence of a contagion effect when the competitors also file for
bankruptcy within 3 years of a bankruptcy filing in the industry. Their evidence on the
competitive is weak, however. Cheng and McDonald (1996) focus on the market structure
and contagion effect hypotheses to interpret stock price reactions to bankruptcy by the
surviving firms in the airline and railroad industries. They posit that the airline companies
possess market power with their ability to control price, quantity, and the nature of the
products sold. Thus, bankruptcy in the airline industry enhances the market power of the
surviving firms which results in higher market value. The railroads, on the other hand, are
interdependent in providing services to the customers. This interdependency weakens
operating performance of the surviving firms when a bankruptcy is filed in the railroad
industry, and, therefore, results in negative stock price reactions.
In this paper, we examine whether the earnings of the rival firms are related to
bankruptcy filings. We provide evidence on whether changes in earnings within the
industry are consistent with the intraindustry stock price effects of bankruptcy detected in
prior studies. Specifically, we report findings on changes in return on equity (DROE) for
a sample of 165 industries that experienced bankruptcy filings between 1991 and 1996
and for subsamples based on industry and bankruptcy-related characteristics. Although a
similar study by Kennedy (2000) examines the operating performance of rivals firms
following a bankruptcy filing, our study is different in the following ways: (i) We
incorporate the specifications used by Lang and Stulz (1992) for contagion and
competitive effects to examine the earnings performance of the competitors. (ii) Our
sample includes all the surviving firms in the industry, not just the five largest
competitors used in Kennedy’s study. (iii) We consider industry and bankruptcy-related
factors (e.g., industry leverage, number of bankruptcy filings in the industry, and size and
earnings of the bankrupt firm) that might affect competitors’ earnings as a result of a
bankruptcy filing.
Our findings indicate that the ROE increases in industries with high concentration of firms
than in industries with less concentration. This relationship is evident in highly leveraged
industries and in industries where more than one bankruptcy petition is filed. Our findings do
not provide support for the contagion effect of bankruptcy as we observe an increase in ROE
in industries with high stock return correlations.
The rest of the paper is organized as follows. Section 2 provides background and the main
hypotheses for this paper. Section 3 describes sample and data collection. The empirical
findings of this study are given in Section 4. Section 5 concludes the paper.
Z. Iqbal / International Review of Economics and Finance 11 (2002) 85–9986
2. Background and expected intraindustry earnings effect
The hypotheses for our study are based on the arguments and empirical evidence presented
by Lang and Stulz (1992). They propose a contagion effect of bankruptcy on the premise that
financial difficulties of the bankrupt firm indicate financial problems in the industry as well.
In addition, they point out that other firms in the industry can be adversely affected in their
dealings with customers, regulators, and suppliers due to a bankruptcy filing in the industry.
This negative contagion effect is stronger in industries with a high degree of cash flow
correlations between the bankrupt firm and nonbankrupt firms.
The competitive effect is based on the argument that the rival firms derive benefits from
the financial difficulties of the bankrupt firm. For example, a decreased demand for the
bankrupt firm’s products may translate into higher demand for its competitors. Lang and Stulz
(1992) argue that this competitive effect is positively related to the degree of concentration
(i.e., inversely related to the degree of competition). Firms in highly concentrated (i.e., less
competitive) industries can increase the prices of their outputs even when they experience an
increase in demand for their products.
Lang and Stulz (1992) provide empirical evidence consistent with their assertions. They
observe that, in general, the competitors’ stockholders react negatively to bankruptcy
announcements. The negative reactions are stronger in industries with similar cash flow
characteristics and in industries with less concentration (measured by Herfindahl index).
Their regression results indicate a positive relationship between abnormal stock price
reactions and degree of concentration and a negative relationship between abnormal stock
price reactions and stock return correlation.
Given the above findings on the valuation effects within the industry, we expect similar
effects of bankruptcy on the earnings of the rival firms. Specifically, we propose the
following hypotheses:
Hypothesis 1: For bankruptcies in general, we can expect either a contagion (negative)
or a competitive (positive) effect on rival firms’ earnings measured by ROE.
Hypothesis 1a: Contagion effect is stronger in industries with highly correlated stock
returns. There is a negative relationship between DROE of the rival firms and their stock
return correlations with the bankrupt firms.
Hypothesis 1b: Competitive effect is stronger in highly concentrated industries. There is
a positive relationship between DROE of the rival firms and Herfindahl index.
3. Sample and data
We identify 170 Chapter 11 bankruptcy filing announcements in the Wall Street Journal
Index (WSJI) from 1991 to 1996. Of these 170 bankrupt filings, we deleted five cases because
of missing or inconsistent industry median values of ROE in either the filing year or any of
the two subsequent years. Table 1 provides some descriptive information on the final sample.
Z. Iqbal / International Review of Economics and Finance 11 (2002) 85–99 87
Table 1
Descriptive statistics of the 165 firms filing bankruptcies and their industries
Bankruptcy filing firms listed on Research Insight database as
Active companies as of 12/31/98 38
Research companies (deleted from the active file) 127
Deleted due to:
Bankruptcy 81
Liquidation 10
Acquisition 21
Leveraged buyout 1
Other reasons 14
Yearly breakdown of the sample
Year of bankruptcy filing 1991 1992 1993 1994 1995 1996 Total
Number of firms filing bankruptcy 54 39 28 17 22 5 165
Industry statistics
Number of industries in the sample 165
Number of nonbankrupt firms in the
sample industries
5688
Mean of nonbankrupt firms
per industry
34
Median of nonbankrupt firms
per industry
22
Frequencies of bankruptcy filings per industry
Frequency Single
filing
Multiple
filings
Number of industries 72 93
Relative asset size of the filing firms
Number of firms with total assets �respective industry median
67
Number of firms with total assets <
respective industry median
90
Missing data 8
Total liabilities of the filing firms
Number of firms with total liabilities �US$120 million
78
Number of firms with total liabilities <
US$120 million
78
Missing data 9
Earnings of the filing firms
Number of firms with negative earnings 1 year
prior or in the year of filing
150
Number of firms with positive earnings 1 year
prior and in the year of filing
15
(continued on next page)
Z. Iqbal / International Review of Economics and Finance 11 (2002) 85–9988
Of the 165 firms that filed bankruptcy petitions, 38 are listed as active companies at the
end of 1998 in the Standard & Poor’s Research Insight database. The remaining 127 research
firms are no longer in business, with 81 firms deleted due to bankruptcy, 10 due to
liquidation, 21 due to acquisition, 1 due to leveraged buyout, and 14 for other reasons.
About one-third or 54 of the sample filings are in 1991 with the number decreasing over time.
Since our empirical analysis of earnings is based on industry medians, we identify all
nonbankrupt firms in the bankrupt firm’s industry to compute the industry median. We ensure
that the bankrupt firms are not included in the sample of nonbankrupt firms during the sample
period. This essentially excludes a firm that filed for bankruptcy and subsequently emerged
from it, in measuring industry median in a later year. The total number of nonbankrupt firms
in all 165 industries are 5688 with the mean number of firms per industry being 34 and
median number being 22.
There are 93 multiple-filing industries, i.e., industries with two or more filings and 72
industries with single filings. One hundred fifty bankrupt firms have negative earnings
(before extraordinary items) in the year of filing or 1 year prior to the filing and 15 bankrupt
firms have positive earnings in both the years. Most bankruptcies in our sample are, therefore,
associated with financial difficulties. Sixty-seven bankrupt firms have total assets greater than
or equal to the respective industry medians 1 year prior to the filing, while 90 bankrupt firms
have total assets less than the respective industry medians. Seventy-eight bankrupt firms meet
Lang and Stulz’s (1992) sample selection criterion of total liabilities in excess of US$120
million. Almost half of our sample bankrupt firms are, therefore, comparable in size to Lang
and Stulz’s bankrupt firms.
Table 1 also presents the industry means and medians of Herfindahl index, stock return
correlations, and debt-to-assets ratio, which we use in subsequent empirical analysis.1
Herfindahl index for each industry is computed as the sum of squared proportions of total
sales 1 year prior to the filing year for all nonbankrupt firms in that industry. The mean
Herfindahl index for the industries is 0.45 and the median is 0.27. Stock return correlation in
an industry is defined as the Pearson’s correlation coefficient of monthly percentage change
in stock prices between the bankrupt firm and median value of the bankrupt firm’s industry.
1 We include debt-to-assets ratio in our analysis because Ferris et al. (1997) and Lang and Stulz (1992) argue
that industry leverage may impact competitors’ stock returns around bankruptcy filings. Higher leverage is
expected to strengthen contagion effect, while higher leverage may either increase or decrease competitive effect.
Table 1 (continued )
Number of
industries
Missing
data
Mean Median
Stock return correlations and Herfindahl index
Correlations 153 12 0.24 0.22
Herfindahl index 165 0 0.45 0.27
Debt-to-assets ratio 165 0 0.57 0.56
Z. Iqbal / International Review of Economics and Finance 11 (2002) 85–99 89
The mean value of the Pearson correlation coefficients for all industries is .24 and the median
value is .22. The mean debt-to-assets ratio for the industries is 0.57 while the median is 0.56.
4. Empirical findings
Table 2 presents drift-adjusted DROE in the year of the bankruptcy filing (Year 0) and two
subsequent years (Years 1 and 2). Following Benartzi, Michaely, and Thaler (1997) who used
Table 2
Five-year drift-adjusted changes in DROE for nonbankrupt firms in industries where bankruptcy petitions have
been filed
Year 0 Year 1 Year 2
Sample N Mean %Pos Mean %Pos Mean %Pos
Total sample 165 � 0.456 41.2## � 0.349 54.6 � 1.047 55.8
Correlation
Above median 76 � 0.604 34.2### 0.948 56.6 1.346* 64.5###
Below median 77 � 0.257 48.1 � 1.613** 51.9 � 3.622 46.8
Difference � 0.347 2.561b 4.968
Herfindahl index
Above median 82 0.409 46.3 0.518 63.4# � 2.520 54.9
Below median 83 � 1.302** 36.1## � 1.207* 45.8 0.408 56.6
Difference 1.711a 1.725a � 2.928
Leverage
Above median 82 � 0.141 41.4 � 0.142 59.8# � 1.806 56.1
Below median 83 � 0.766 40.9# � 0.554 49.4 � 0.297 55.4
Difference 0.625 0.412 � 0.509
The results are based on the median DROE in the bankrupt firm’s industry. We report the mean values of the
industry medians and the percentage of the positive industry medians in the year of the bankruptcy filing (Year 0)
and in two subsequent years (Years 1 and 2). The results are reported for (a) the total sample of 165 industries, (b)
subsamples of industries partitioned by the median value of stock return correlations between the bankrupt and
nonbankrupt firms, (c) subsamples of industries partitioned by the median value of Herfindahl index, and (d)
subsamples of industries partitioned by the median value of debt-to-assets ratio. N is the number of industries.a Mean values of two subsamples significantly different at the 10% level using a two-tailed t test.b Mean values of two subsamples significantly different at the 5% level using a two-tailed t test.c Mean values of two subsamples significantly different at the 1% level using a two-tailed t test.
* Significantly different from 0 at the 10% level using a two-tailed t test.
** Significantly different from 0 at the 5% level using a two-tailed t test.
*** Significantly different from 0 at the 1% level using a two-tailed t test.# Proportion of positive value significantly different from equal proportions at the 10% level using a chi-
square test.## Proportion of positive value significantly different from equal proportions at the 5% level using a chi-
square test.### Proportion of positive value significantly different from equal proportions at the 1% level using a chi-
square test.
Z. Iqbal / International Review of Economics and Finance 11 (2002) 85–9990
drift-adjusted changes in earnings in their study, we compute 5-year drift-adjusted change in
ROE as:
DROEy ¼ ðROEy � ROEy�1Þ �ROE�1 � ROE�5
4ð1Þ
For each nonbankrupt firm, we first compute DROE for Years 0, 1, and 2. We then
determine the median DROE in each of the 165 industries. The mean value of the industry
medians and the percentage of positive industry medians are reported in Table 2. The
findings for the total sample indicate that the mean DROEs are not significantly different
from 0 in any year. Only the goodness-of-fit test shows that the percentage of positive
DROE in Year 0 (41.2%) is significantly less than the expected value of equal proportions.
The evidence of any bankruptcy effect on the competitors’ earnings for the whole sample is,
therefore, weak.
The findings for subsamples partitioned by the median values of stock return correlation,
Herfindahl index, and debt-to-assets ratio are also presented in Table 2. For industries with
correlation values higher than the median, the percentage of positive DROE in Year 0 (34.2%)
is significantly less than the expected value, which provides some support for a contagion
effect in the year of bankruptcy. However, the positive DROE of 1.346% in Year 2 for highly
correlated industries and the negative DROE of � 1.613% in Year 1 for less correlated
industries do not support the contagion effect. Overall, we fail to observe a strong evidence of
negative earnings (i.e., contagion effect) in industries that have high stock return correlations
between the bankrupt firm and its competitors.
The findings partitioned by the median Herfindahl index show that the below median
industries have negative and statistically significant DROEs of � 1.302% and � 1.207% in
Years 0 and 1, respectively. In these 2 years, the DROEs for the below median industries are
also significantly less than those of the above median industries. The proportion of positive
DROE (36.1%) is significantly less than expected in Year 0 for industries with low Herfindahl
index, while the proportion of positive DROE (63.4%) is significantly greater than expected
in Year 1 for industries with above median Herfindahl index. These findings based on
Herfindahl index support our hypothesis that a bankruptcy in a highly concentrated industry
has a greater competitive or positive effect on other firms’ earnings than a bankruptcy in a
less concentrated industry.
The findings partitioned by the median debt-to-assets ratio show that the mean DROE of
neither subsample is significant in any year. In Year 0, however, the proportion of positive
DROE (40.9) for the low-leverage industries is significantly less than the expected value. In
addition, in Year 1, the proportion of positive DROE (59.8) for the high-leverage industries is
significantly higher than the expected value. Thus, there is a weak evidence that leverage has
a positive influence on the DROE of bankrupt firms’ competitors.
To examine whether certain bankruptcy-related variables, e.g., number of bankruptcies in
the industry, relative size of the bankrupt firm, liabilities of bankrupt firm in excess of
US$120 million, and earnings of the bankrupt firm explain competitors’ earnings, we present
Z. Iqbal / International Review of Economics and Finance 11 (2002) 85–99 91
DROEs in Table 3 for subsamples partitioned by these variables.2 In Year 0, the proportions
of positive DROE are significantly less than the expected value for the following categories:
single bankruptcy filings, bankrupt firms with asset size less than industry median, bankrupt
firms with liabilities less than US$120 million, and bankrupt firms with earnings losses. In
Year 1, the proportion of positive DROE is significantly higher for firms with asset size less
than industry median. In Year 2, multiple bankruptcy industries and bankruptcies by small
firms seem to have higher proportions of positive DROE. In addition, the mean DROE of
1.067% in Year 2 for the bankrupt firms whose assets are less than median is significantly
different from zero.
Table 3
Five-year drift-adjusted DROE for (a) multiple and single bankruptcy industries, (b) industries grouped by
bankrupt firm’s assets above and below industry median, (c) industries grouped by bankrupt firm’s total liabilities
above and below US$120 million, and (d) industries grouped by negative and positive earnings of bankrupt firm
Year 0 Year 1 Year 2
Sample N Mean %Pos Mean %Pos Mean %Pos
Multiple bankruptcies 93 0.053 44.1 � 0.086 55.9 0.930 59.1#
Single bankruptcy 72 � 1.113 37.5## � 0.690 52.8 � 3.601 51.4
Difference 1.166 � 0.604 4.531
Asset size >median 67 � 1.095 44.8 � 1.199 47.8 � 4.011 46.3
Asset size <median 90 � 0.013 38.9## 0.151 60.0# 1.067 * 62.2##
Difference � 1.082 1.350 � 5.078a
Liabilities > US$120million 78 � 0.139 44.9 � 0.889 55.1 0.381 55.1
Liabilities < US$120million 78 � 0.795 38.5## 0.039 55.1 � 2.555 56.4
Difference � 0.656 � 0.928 2.936
Negative earnings 150 � 0.546 40.7# � 0.424 54.0 � 1.256 55.3
Positive earnings 15 0.448 46.6 0.399 60.0 1.039 60.0
Difference 0.098 � 0.823 � 2.295
N is the number of industries.a Mean values of two subsamples significantly different at the 10% level using a two-tailed t test.b Mean values of two subsamples significantly different at the 5% level using a two-tailed t test.c Mean values of two subsamples significantly different at the 1% level using a two-tailed t test.
* Significantly different from 0 at the 10% level using a two-tailed t test.
** Significantly different from 0 at the 5% level using a two-tailed t test.
*** Significantly different from 0 at the 1% level using a two-tailed t test.# Proportion of positive value significantly different from equal proportions at the 10% level using a chi-
square test.## Proportion of positive value significantly different from equal proportions at the 5% level using a chi-
square test.### Proportion of positive value significantly different from equal proportions at the 1% level using a chi-
square test.
2 Ferris et al. (1997) provide evidence that the relative size of the bankrupt firms explains intraindustry effects.
They also indicate that their results differ from those of Lang and Stulz (1992) because Lang and Stulz include
bankrupt firms with liabilities in excess of US$120 million only.
Z. Iqbal / International Review of Economics and Finance 11 (2002) 85–9992
Although most of the findings in Table 3 are statistically insignificant to draw any valid
conclusions, they can be summarized as follows: Industries with multiple bankruptcy filings
seem to have an increase in ROE when compared to industries with single filings. For small
firm bankruptcies, the industry ROE decreases in Year 0, but increases in two subsequent years.
In addition, the industry ROE decreases when a firm with earnings losses file for bankruptcy.
Table 4
Results of regressions where the dependent variable, DROE, is regressed on Herfindahl index, stock return
correlation, and debt-to-assets ratio
Dependent variables: drift-adjusted DROE
Independent variable Year 0 coefficient (t value) Year 1 coefficient (t value) Year 2 coefficient (t value)
Constant � 3.135 (� 1.29) � 4.778 (� 2.11** ) � 2.785 (� 0.39)
Herfindahl index 2.383 (3.19*** ) 2.888 (4.19*** ) � 0.227 (� 0.10)
Return correlation � 1.068 (� 0.38) 5.681 (2.17** ) 6.428 (0.78)
Debt-to-assets ratio 3.295 (0.81) 3.044 (0.81) 0.278 (0.02)
F value 3.732*** 7.978*** 0.205
R2 .070 .138 .004
The sample size is 153 industries (12 industries are deleted due to missing stock return correlation data).
* Significantly different from 0 at the 10% level using a two-tailed t test.
** Significantly different from 0 at the 5% level using a two-tailed t test.
*** Significantly different from 0 at the 1% level using a two-tailed t test.
Table 5
Results of regressions where the dependent variable, DROE, is regressed on Herfindahl index, stock return
correlation, debt-to-assets ratio, number of bankruptcy filings in an industry (coded 1 if multiple filings and coded
0 if single filing), relative asset size of bankrupt firm (coded 1 if higher than industry median and coded 0 if less
than industry median), bankrupt firm’s liabilities (coded 1 if higher than US$120 million and coded 0 if less than
US$120 million), and bankrupt firm’s earnings (coded 1 if negative earnings in Year 1 or 0 and coded 0 if positive
earnings in both Years 1 and 2)
Dependent variables: drift-adjusted DROE
Independent variable
Year 0 coefficient
(t value)
Year 1 coefficient
(t value)
Year 2 coefficient
(t value)
Constant � 2.591 (� 0.84) � 4.763 (� 1.67* ) 1.043 (0.12)
Herfindahl index 2.502 (3.11*** ) 2.724 (3.65*** ) � 0.258 (� 0.11)
Correlation � 2.245 (� 0.68) 7.079 (2.31** ) 4.414 (0.46)
Debt-to-assets ratio 0.763 (0.61) 4.104 (0.35) � 8.548 (� 0.63)
Number of bankruptcies (coded) 0.949 (0.78) � 2.242 (� 0.22) 4.798 (1.36)
Bankrupt firm asset size (coded) � 1.286 (� 0.99) � 0.969 (� 0.80) � 7.043 (� 1.86* )
Bankrupt firm liabilities (coded) 1.578 (1.14) � 1.136 (� 0.89) 5.650 (1.410)
Bankrupt firm earnings (coded) 0.380 (0.18) 0.197 (0.10) � 0.747 (� 0.12)
F value 1.851* 3.549*** 0.995
R2 .086 .153 .048
The sample size is 145 industries (20 industries are deleted due to missing data).
* Significantly different from 0 at the 10% level using a two-tailed t test.
** Significantly different from 0 at the 5% level using a two-tailed t test.
*** Significantly different from 0 at the 1% level using a two-tailed t test.
Z. Iqbal / International Review of Economics and Finance 11 (2002) 85–99 93
Table 6
Regression results for subsamples partitioned by (a) debt-to-assets ratio, (b) number of bankruptcies in the
industry, (c) relative asset size of the bankrupt firm in the industry, (d) total liabilities of the bankrupt firm, and (e)
earnings of the bankrupt firm at the time of filing
Dependent variables: drift-adjusted DROE
Independent
variables
Year 0 coefficient
(t value)
Year 1 coefficient
(t value)
Year 2 coefficient
(t value)
Debt-to-assets
>Median (N= 72) Constant � 1.571 (� 1.34) � 3.300 (� 2.43** ) � 5.033 (� 0.89)
Herfindahl index 2.506 (3.56*** ) 3.094 (3.81*** ) 0.296 (0.88)
Correlation 0.853 (0.25) 5.854 (1.48) 10.800 (0.66)
F value 6.404*** 8.467*** 0.221
R2 .157 .197 .006
<Median (N= 81) Constant � 0.658 (� 0.41) � 2.533 (� 2.02** ) 0.361 (0.36)
Herfindahl index 1.280 (0.49) 1.529 (0.76) � 3.138 (� 1.96* )
Correlation � 2.801 (� 0.62) 5.964 (1.71* ) 2.217 (0.80)
F value 0.296 1.864 2.129
R2 .008 .046 .052
Number of bankruptcies in the industry
Multiple (N = 85) Constant � 4.388 (� 1.65) � 6.680 (� 2.44** ) � 1.909 (� 0.71)
Herfindahl index 2.408 (3.65*** ) 3.240 (4.77*** ) � 0.588 (� 0.88)
Correlation 0.114 (0.04) 5.377 (1.70* ) 1.713 (0.55)
F value 5.286*** 9.808*** 0.720
R2 .162 .264 .026
Single (N= 66) Constant � 0.181 (� 0.04) � 0.759 (� 0.19) � 1.811 (� 0.11)
Herfindahl index 1.268 (0.44) � 0.725 (� 0.30) � 0.976 (� 0.09)
Correlation � 3.866 (� 0.72) 6.309 (1.37) 9.062 (0.46)
F value 0.226 0.678 0.092
R2 .011 .031 .004
Asset size of bankrupt firm
>Median (N= 62) Constant � 3.649 (� 0.77) � 9.660 (� 2.69*** ) � 4.805 (� 0.27)
Herfindahl index 5.193 (2.41** ) 4.771 (2.92*** ) 0.244 (0.03)
Correlation � 0.947 (� 0.17) 9.987 (2.36** ) 15.668 (0.76)
F value 2.013 6.072*** 0.210
R2 .093 .236 .011
<Median (N= 83) Constant � 2.363 (� 0.88) � 1.741 (� 0.58* ) � 1.151 (� 0.40)
Herfindahl index 1.759 (2.49** ) 2.350 (2.98*** ) � 0.655 (� 0.86)
Correlation � 1.835 (� 0.51) 3.456 (0.86) 2.348 (0.60)
F value 2.316* 3.296** 0.570
R2 .080 .110 .021
Liabilities of bankrupt firm
>US$120 million (N= 68) Constant � 4.433 (� 1.16) � 9.055 (� 2.57** ) � 1.602 (� 0.39)
Herfindahl index 7.923 (3.85*** ) 6.862 (3.59*** ) � 2.075 (� 0.94)
Correlation � 3.470 (� 0.89) 5.539 (1.53) 5.051 (1.21)
F value 5.163*** 5.857*** 0.768
(continued on next page)
Z. Iqbal / International Review of Economics and Finance 11 (2002) 85–9994
We perform regression analysis in order to investigate whether DROE can be explained by
Herfindahl index, stock return correlation, debt-to-assets ratio, and the bankruptcy- and
industry-related variables listed in Table 3. We first regress DROE on the Herfindahl index,
stock return correlation, and debt-to-assets ratio. Consistent with our previous findings in
Table 2, the results presented in Table 4 indicate that there is a positive association between
DROE and Herfindahl index in Years 0 and 1. The coefficient for the Herfindahl is 2.383
(t value = 3.19) in Year 0 and 2.888 (t value = 4.19) in Year 1. In Year 1, the coefficient of the
stock correlation variable is positive and significant (5.681, t value = 2.17), which again does
not provide support for the contagion effect.
In Table 5, we present the regression results by regressing DROE on the following
explanatory variables: Herfindahl index, stock return correlation, debt-to-assets ratio, number
of bankruptcy filings in an industry (coded 1 if multiple filings and coded 0 if single filing),
relative asset size of bankrupt firm (coded 1 if higher than industry median and coded 0 if less
than industry median), bankrupt firm’s earnings (coded 1 if negative earnings in either Year 1
or 0 and coded 0 if positive earnings in both Years 1 and 2), and bankrupt firm’s liability size
(coded 1 if higher than US$120 million and coded 0 if less than US$120 million).
As expected, the regression results in Table 5 show that Herfindahl index has a positive and
significant relationship with DROE. In Year 0, the coefficient is 2.502 (t value = 3.11), and in
Year 1, the coefficient is 2.724 (t value = 3.65). These results are consistent with the argument
Table 6 (continued )
Dependent variables: drift-adjusted DROE
Independent
variables
Year 0 coefficient
(t value)
Year 1 coefficient
(t value)
Year 2 coefficient
(t value)
R2 .192 .213 .034
<US$120 million (N= 76) Constant � 2.318 (� 0.59) � 4.583 (� 1.26) 1.375 (0.09)
Herfindahl index 1.691 (1.98** ) 2.071 (2.59** ) 0.583 (0.17)
Correlation 0.055 (0.01) 8.989 (1.75* ) 7.268 (0.35)
F value 1.463 4.131*** 0.092
R2 .057 .145 .004
Bankrupt firm’s earnings
Negative (N= 137) Constant � 3.921 (� 1.48) � 5.938 (� 2.40** ) � 4.771(� 0.59)
Herfindahl index 4.443 (3.73*** ) 4.685 (4.22*** ) � 0.302 (� 0.08)
Correlation � 1.617 (� 0.50) 6.617 (2.20** ) 8.853 (0.91)
F value 4.931*** 8.520*** 0.285
R2 .099 .160 .006
Positive (N= 14) Constant � 4.248 (� 0.69) � 6.539 (� 1.28* ) 8.173 (1.68)
Herfindahl index 0.750 (1.23) 1.349 (2.68** ) � 0.365 (� 0.76)
Correlation � 2.368 (� 0.56) � 1.642 (� 0.47) 0.091 (0.03)
F value 1.082 4.298** 1.444
R2 .228 .540 .282
N is the number of industries in the regressions.
* Significantly different from 0 at the 10% level using a two-tailed t test.
** Significantly different from 0 at the 5% level using a two-tailed t test.
*** Significantly different from 0 at the 1% level using a two-tailed t test.
Z. Iqbal / International Review of Economics and Finance 11 (2002) 85–99 95
that the rival firms experience increase in earnings in concentrated industries than in less
concentrated industries. With regards to correlation variable, a significant and positive
coefficient of 7.079 (t value = 2.31) in Year 1 is inconsistent with the contagion effect argument.
To investigate whether the associations between DROE and Herfindahl index (i.e., the
competitive effect) observed earlier in our study depend on industry leverage, number of
bankruptcy filings in the industry, relative asset size of the bankrupt firm within the industry,
size of the bankrupt firm measured by total liabilities, and earnings performance of the
bankrupt firm, we estimate regression coefficients for subsamples categorized by these
attributes. The results in Table 6 show that the positive competitive effect of bankruptcy is
observed in high-leverage industries. For industries with debt-to-assets ratios greater than the
median, the Herfindahl index coefficients of 2.506 (t value = 3.56) in Year 0 and 3.094
(t value = 3.81) in Year 1 are significant. In Year 2, there is a decrease in ROE for industries
with debt-to-assets ratios less than the median. These results suggest that the positive
association between DROE and Herfindahl index exist in highly levered industries.
Another noteworthy finding in Table 6 indicate that the competitive effect is observed in
industries with multiple bankruptcy filings, but not in industries with single filing. The
remaining findings suggest that the positive relationship between DROE and Herfindahl holds
true for both large and small bankrupt firms categorized by relative asset size in the industry.
In addition, a positive relationship is detected for bankrupt firms with liabilities above
US$120 million (the sample selection criterion used by Lang & Stulz, 1992), as well as for
Table 7
Results of regressions where the dependent variable, DOR, is regressed on Herfindahl index, stock return
correlation, debt-to-assets ratio, number of bankruptcy filings in an industry (coded 1 if multiple filings and coded
0 if single filing), relative asset size of bankrupt firm (coded 1 if higher than industry median and coded 0 if less
than industry median), bankrupt firm’s liabilities (coded 1 if higher than US$120 million and coded 0 if less than
US$120 million), and bankrupt firm’s earnings (coded 1 if negative earnings in Year 1 or 0 and coded 0 if positive
earnings in both Years 1 and 2)
Dependent variables: drift-adjusted DROE
Independent variable
Year 0 coefficient
(t value)
Year 1 coefficient
(t value)
Year 2 coefficient
(t value)
Constant � 2.591 (� 0.84) � 4.763 (� 1.67* ) 1.043 (0.12)
Herfindahl index 2.502 (3.11*** ) 2.724 (3.65*** ) � 0.258 (� 0.11)
Correlation � 2.245 (� 0.68) 7.079 (2.31 ** ) 4.414 (0.46)
Debt� to� assets ratio 0.763 (0.61) 4.104 (0.35) � 8.548 (� 0.63)
Number of bankruptcies (coded) 0.949 (0.78) � 2.242 (� 0.22) 4.798 (1.36)
Bankrupt firm asset size (coded) � 1.286 (� 0.99) � 0.969 (� 0.80) � 7.043 (� 1.86* )
Bankrupt firm liabilities (coded) 1.578 (1.14) � 1.136 (� 0.89) 5.650 (1.410)
Bankrupt firm earnings (coded) 0.380 (0.18) 0.197 (0.10) � 0.747 (� 0.12)
F value 1.851* 3.549*** 0.995
R2 .086 .153 .048
The sample size is 145 industries (20 industries are deleted due to missing data).
* Significantly different from 0 at the 10% level using a two-tailed t test.
** Significantly different from 0 at the 5% level using a two-tailed t test.
*** Significantly different from 0 at the 1% level using a two-tailed t test.
Z. Iqbal / International Review of Economics and Finance 11 (2002) 85–9996
firms with liabilities less than US$120 million. DROE and Herfindahl are positively related
when the filing firms have negative earnings, as well as positive earnings at the time of the
bankruptcy filings. These results imply that the competitive effect is variant to the size and
earnings performance of the bankrupt firm.
Overall, the regression findings in Tables 4–6 provide evidence that the earnings of the
bankrupt firms’ competitors increase in concentrated industries than in less concentrated and
that these increases seem to depend on industry leverage and the number of bankruptcies in
the industry.
4.1. Intraindustry effect on operating earnings to sales
To verify the robustness of our results, we examine operating return (OR) measured as
operating income before extraordinary items divided by sales. We compute median values of
Table 8
Regression results for subsamples partitioned by (a) debt� to� assets ratio and (b) number of bankruptcies in
the industry
Dependent variables: drift� adjusted DROE
Independent variables
Year 0 coefficient
(t value)
Year 1 coefficient
(t value)
Year 2 coefficient
(t value)
Debt� to� assets
>Median (N= 72) Constant � 0.073 (� 0.35) � 0.146 (� 0.22) 0.747 (0.12)
Herfindahl index 0.539 (2.74***) 0.251 (0.64) � 0.167 (� 0.43)
Correlation 0.535 (0.56) 0.115 (0.06) 2.001 (1.06)
F value 3.961** 0.204 0.648
R2 .103 .066 .018
<Median (N= 81) Constant � 0.947 (� 1.46) � 0.550 (� 1.00) � 0.747 (0.17)
Herfindahl index � 0.320 (� 0.31) 0.626 (0.71) � 0.167 (� 0.43)
Correlation 0.812 (0.72) 1.777 (1.16) 2.001 (1.06)
F value 0.141 0.991 0.648
R2 .004 .025 .018
Number of bankruptcies in the industry
Multiple (N = 85) Constant � 0.645 (� 1.46) � 1.162 (� 2.43** ) � 0.482 (� 1.12)
Herfindahl index 0.521 (1.98**) 0.237 (0.81) 0.046 (0.17)
Correlation 0.602 (0.48) 3.173 (2.35** ) 1.553 (1.27)
F value 1.989 3.092** 0.827
R2 .046 .069 .020
Single (N= 66) Constant � 0.805 (� 1.32) � 0.759 (� 0.19) 0.059 (0.07)
Herfindahl index 0.711 (0.73) � 0.725 (� 0.30) � 0.829 (� 0.62)
Correlation 0.735 (0.42) 6.309 (1.37) 2.807 (1.11)
F value 0.377 0.678 0.746
R2 .012 .031 .023
N is the number of industries in the regressions.
* Significantly different from 0 at the 10% level using a two� tailed t test.
** Significantly different from 0 at the 5% level using a two� tailed t test.
*** Significantly different from 0 at the 1% level using a two-tailed t test.
Z. Iqbal / International Review of Economics and Finance 11 (2002) 85–99 97
5-year drift-adjusted changes in OR (DOR) for the bankrupt firms’ industries. In Table 7, we
present results of the regression model that regresses DOR on all of the explanatory variables
examined previously. Consistent with the previous findings, the Herfindahl index coefficient
is positive and significant for Year 0. The index coefficients in Years 1 and 2 are not
statistically significant indicating that the competitive effect when measured by OR exists in
the year of bankruptcy filing only.
Finally, we investigate whether the relationship between DOR and Herfindahl index
depends on industry leverage and number of bankruptcy in the industry as previously
observed. We estimate regressions coefficients for subsamples divided by the median value of
debt-to-assets ratio and number of filings (multiple vs. single filings). According to Table 8,
the Herfindahl index coefficient in Year 0 is positive and significant when debt-to-assets ratio
is higher than the median and when multiple bankruptcies are filed in the industry. These
results are consistent with the ROE findings in Section 4.
5. Conclusions
Following prior evidence of valuation effect of bankruptcy on the competitors, we
investigate whether similar effect is observed on the earnings of the bankrupt firms’
competitors. Our empirical analysis is centered around contagion and competitive effects
of bankruptcy. A contagion effect is associated with negative performance of the rival firms,
whereas a competitive effect indicates improvements in rival firms’ performance.
We detect insignificant results for the total sample, but significant results for sub-
samples partitioned by industry concentration and stock return correlations. We observe
that changes in competitors’ ROE are higher in concentrated (less competitive) industries
when compared to less concentrated (competitive) industries. Furthermore, this compet-
itive effect on earnings is observed for high-leverage industries and when more than one
bankruptcy filing occur within the industry. Our findings, therefore, provide support for
the competitive effect of bankruptcy on competitors’ equity value observed by Lang and
Stulz(1992). Our data, however, fail to detect a contagion effect of bankruptcy on
competitors’ earnings.
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