THE CHOICE AMONG DEBT,EQUITY, AND CONVERTIBLE BONDS

The hybrid nature of convertible bonds continues to interest corporate financial managers, investors, and economists. While much theoretical and empirical research examines an issuer's choice between using straight debt and equity, little research evaluates how an issuer chooses among debt, equity, and convertible bonds. This study extends Marsh's [ 13 ] research on the differences between debt and equity issuers in the United Kingdom by examining U.S. industrial firms that issue debt, equity, or convertible bonds. It also illustrates how various distinguishing features influence the probability that each security will be issued.     

What we do and do not know about convertible bond financing

We review the literature on the issuance motives, shareholder wealth effects, and design of convertible bonds. Empirical studies on convertible debt issuance mainly focus on testing the predictions of four traditional theoretical models based on convertibles' potential to mitigate agency or adverse selection costs, and obtain mixed evidence. Recent studies on shareholder wealth effects of convertible bond issues highlight the need to control for arbitrage-related short selling and post-issuance risk changes. Studies on the determinants of convertible bond design uncover earnings management, as well as catering incentives to convertible arbitrage funds, as important determinants of innovations in convertible bond characteristics. Overall, our review indicates that recent empirical research on convertible debt provides valuable insights into issue motives and determinants of financial innovations, but also considers the broader question of how investor demand characteristics impact corporate finance decisions. We conclude with an overview of potential research questions to be addressed by future research on hybrid securities.     

The long-run performance of firms that issue convertible debt: an empirical analysis of operating characteristics and analyst forecasts

Many firms issue hybrid securities, such as convertible debt, instead of standard securities like straight debt or common equity. Theoretical arguments suggest that convertible debt minimizes costs for firms facing high debt- and equity-related external financing costs. Theory also suggests that an appropriately designed convertible security provides efficient investment incentives. We show, however, that firms on average perform poorly following the issuance of convertible debt. The empirical evidence suggests that the efficient investment decisions predicted by theory are not in fact achieved by the actual design and issuance of convertible debt securities. An alternative interpretation of convertible debt offers is that investors ration the participation of some issuers in the seasoned equity market.     

Financing decisions: The case of convertible bonds

Research studying firms' motivations to issue convertible bonds remains far from complete. This paper aims to provide further understanding of firms' motives behind issuing convertible bonds. We propose a theoretical model that explains issuers' choice between convertibles and equity when raising a required amount of capital by comparing the cash flow streams of both alternatives in order to maximize the firm's value for the current shareholders. We derive a closed form solution of our theoretical model both in absence and presence of default risk. Our model suggests that issuing convertible bonds is preferred to a direct stock issuance if the expected return of convertible bonds is lower than the expected return of common stocks. Empirical findings confirm our theoretical predictions.     

Convertible debt issuance,capital structure change and financing-related information: Some new evidence

This paper provides evidence on the valuation effects of convertible debt issuance. Common stockholders earn significant negative abnormal returns at the initial announcement of a convertible debt offering, and also at the issuance date. In contrast, the average valuation effect on common stock at the announcement of non-convertible debt offerings is only marginally negative, and is zero at issuance. The significant negative average effect on common stock value appears not to be systematically related to either the degree of leverage change induced by the convertible debt issuance or the extent to which the proceeds from issuance are used for new investment or to refinance existing debt. If, as appears likely, the issuance of convertible debt on average increases financial leverage, these results are inconsistent with evidence from other recent studies documenting common stock price effects of the same sign as the change in leverage. The evidence suggests that convertible debt offerings convey unfavorable information about the issuing firms, but the specific nature of such information remains unidentified.     

Convertible debt and investment timing

In this paper we provide an investment-based explanation for the popularity of convertible debt. Specifically, we demonstrate the ability of convertible debt to alleviate and potentially totally eliminate the underinvestment problem of Myers (1977). A conversion feature induces shareholders to accelerate investment. This effect arises from the incentive of equity holders to accelerate the issuance of new equity, used to finance investment, since by investing early shareholders dilute the value of convertible debt holders by reducing their proportional claims to the firm's cash flows. Since the underinvestment effect and the accelerated investment effect work in opposite directions, convertible debt allows to mitigate or completely eliminate the debt overhang problem. In addition, we show that by choosing the right combination of straight debt and convertible debt, shareholders can, for a wide range of overall debt levels, commit to the investment strategy of an all-equity firm.     

FIRM PERFORMANCE AND SECURITY TYPE IN SEASONED OFFERINGS: AN EMPIRICAL EXAMINATION OF ALTERNATIVE SIGNALING MODELS

In this paper we examine the long-term performance of publicly traded firms that issue straight debt, convertible debt, or common stock. Declines in firm performance following issuance are consistent with declines in firm value at announcement and issuance, and suggest that convertible debt and common stock are substantially equivalent. This study is consistent with the pecking-order and Miller-Rock models, but inconsistent with the leverage-signaling model. Despite a significant decline following issuance, firms issuing common stock or convertible debt perform better, on average, than the industry before, at, and after issuance. This is consistent with younger, riskier, higher-growth firms being the predominant issuers of common stock and convertible debt.     

UNITS OF DEBT WITH WARRANTS: EVIDENCE OF THE “PENALTY-FREE” ISSUANCE OF AN EQUITY-LIKE SECURITY

While units of debt with warrants are not structured as perfect substitutes for convertible bonds, there is reason to believe that firms view the two securities as viable alternative methods of raising funds. Analyses of the capital market effects of the announcement of the plan to issue and the issuance of units of debt with warrants provide unique evidence of the “penalty-free” issuance of an equity-like security. Evidence is found to support the conjecture that units are typically issued by smaller, riskier firms than are convertible bonds. However, there is no evidence that the use of this security is interpreted by the market as a sign of financial distress.     

Callable or convertible debt? The role of debt overhang and covenants

We analyze what role debt overhang and covenants have in a manager’s choice between issuing callable or convertible debt when a firm needs to issue a substantial amount of debt. Callable bonds provide a higher coupon in exchange for a repurchase option. Convertible bonds offer bondholders the option to exchange debt to equity. Using a dynamic capital structure model with investment choice, we find that callable debt implies a larger debt overhang friction, and for highly leveraged firms convertible debt is preferred. Moreover, if outstanding bonds have net-worth covenants attached, callable bonds are more likely to be issued. Our empirical findings support the theory.     

Do Investor Demand and Market Timing Affect Convertible Debt Issuance Decisions by REITs?

The unique regulatory environment of REITs casts doubt on the traditional theoretical process by which REIT managers base their convertible debt issuance decisions on issuer condition and prospects. Anecdotal evidence shows that REITs may have catered to demand by investors, including a demand by convertible bond arbitrageurs when issuing convertible debt. This study examines the rationale behind convertible debt issuances by REITs, focusing on the possible impacts of investor demand and market timing. The results suggest that investor demand significantly affects convertible debt issuance decisions by REITs while certain unknown factors appear to have contributed to the sudden increase of convertible debt offerings in 2006 and 2007. REITs also time the market to conditions in the public debt market. The results only partially support the offered risk-shifting, risk-uncertainty, backdoor-equity, and sequential-financing hypotheses.     

Investment and financing activity following calls of convertible bonds

The staged financing hypothesis of Mayers [Mayers, D., 1998. Why firms issue convertible bonds: The matching of financial and real investment options. Journal of Financial Economics 47, 83–102] predicts that investment and financing activity will increase following in the money convertible bond calls. The prediction for out of the money convertible calls is different: no increase is expected. We study the rate of both corporate investment and external financing around forced conversions using benchmarks that are analogous to those recommended by Barber and Lyon [Barber, B., Lyon, J., 1996. Detecting abnormal operating performance: The empirical power and specification of test statistics. Journal of Financial Economics 41, 359–400]. We also examine the cross-section of changes in investment and financing activity. Conversion-forcing firms exhibit an increase in both capital expenditures and debt financing around the year of the convertible bond call; however, the same result holds for the sample firms that conducted out-of-the-money convertible calls. Further, there is no relation between changes in investment activity and changes in debt issuance at the firm level. The evidence is inconsistent with the notion that forced conversions serve as a catalyst for staged financing and investment.     

Changes in risk characteristics of firms issuing hybrid securities: case of convertible bonds

The present paper examines changes in risk characteristics of a firm when it issues convertible bonds by studying the change in beta before and after the issuance of convertible bonds. Using a sample of 149 firms, strong evidence was found of change in beta, along with significant heterogeneity across firms. On average, the beta of a firm issuing convertible bonds declines, although 40 per cent of firms showed an increase in beta. A cross‐sectional regression shows that after controlling for the reversion‐to‐mean phenomenon, the change in beta is significantly related to potential dilution of equity as well as to increase in debt, but is not significantly related to either the change in bond rating of a firm or to the stated use of funds from issuance.     

Are there windows of opportunity for convertible debt issuance? Evidence for Western Europe

This paper hypothesizes that hot convertible debt windows represent periods with lower convertible debt-related financing costs. Supporting this premise, we find that the stock price impact of Western European convertible debt announcements is significantly less negative during hot convertible debt windows. Importantly, this result holds while controlling for equity and straight debt issuance volumes and for macroeconomic conditions. In addition, stockholders are less sensitive to issuer- and issue-specific financing costs during hot convertible debt markets. Overall, these findings indicate that hot convertible debt markets represent windows of opportunity for convertible debt issuance. Firms with high idiosyncratic financing costs act accordingly by timing their convertible debt offering during a hot market.     

Do shareholders benefit from green bonds?

The green bond market has been growing rapidly worldwide since its debut in 2007. We present the first empirical study on the announcement returns and real effects of green bond issuance by firms in 28 countries during 2007–2017. After compiling a comprehensive international green bond dataset, we document that stock prices positively respond to green bond issuance. However, we do not find a consistently significant premium for green bonds, suggesting that the positive stock returns around green bond announcements are not fully driven by the lower cost of debt. Nevertheless, we show that institutional ownership, especially from domestic institutions, increases after the firm issues green bonds. Moreover, stock liquidity significantly improves upon the issuance of green bonds. Overall, our findings suggest that the firm's issuance of green bonds is beneficial to its existing shareholders.     

Foreign capital raising by Indian firms: An examination of domestic stock price response

We examine the domestic stock price response to foreign capital issuance by Indian firms. Firms have extensively used foreign equity and convertible foreign debt sources since 1994. The role of foreign investment bankers, size of the issue, firm's growth opportunities, and other factors are examined in the cross-sectional analysis of domestic stock price response. We find that firms experience positive stock price response to both equity and debt issues abroad, with greater response to issuance of American Depositary Receipts (ADRs), and financing high corporate growth.     

CAPITAL STRUCTURE MANAGEMENT AS A MOTIVATION FOR CALLING CONVERTIBLE DEBT

Using a matched-pairs methodology, we present empirical evidence of systematic changes within a corporation that are associated with calls of convertible debt. We find that calling firms experience significantly greater growth than noncalling firms in the same industry, as measured by retained earnings and long-term debt. Also, the converted debt provides a significant source of new book equity, and calling firms issue significantly less other new equity. The pattern of growth in balance sheet accounts is consistent with the pecking order hypothesis and supports the notion that some firms call convertible debt to reduce their total cost of obtaining additional external financing. The evidence also shows that, on average, calling firms experience a significant decline in their leverage ratio based on book value but no significant change in their leverage ratio based on market value of equity. This is consistent with the call's being used as part of the firm's management of its capital structure.     

The Valuation Effects of Private Placements of Convertible Debt

Share price reactions to announcements of 61 private placements of convertible debt securities are investigated and a significant positive average abnormal return of 1.80% is documented. This unique result contrasts with the negative average abnormal return associated with public sales of convertible debt securities. The positive effect on common shareholders' wealth appears to be related to the relative size of the private issue and unrelated to the degree to which the convertible bond is “out-of-the-money” at issuance.     

Industry conditions,growth opportunities and market reactions to convertible debt financing decisions

Firms that issue convertible debt have high debt- and equity-related costs of external finance. Existing theories of convertible debt finance differ primarily in their identification of the specific causes of the debt- and equity-related costs of external finance. To assess the theoretical issuance motives separately, we propose a simple framework that characterizes how issuers should design convertible debt to efficiently mitigate specific debt- and equity-related costs of external finance. We provide evidence from 588 security offer announcements that supports the hypotheses that: (1) convertible debt can be designed to mitigate different combinations of debt- and equity-related costs of external finance and (2) share price reactions depend on the security design decisions. The results also illustrate that the relations between firm value, financial leverage, investment opportunities, and the rate of future growth are more complex among convertible debt issuers than situations where firms issue standard financial securities.     

Transparency,idiosyncratic risk,and convertible bonds

We first investigate the relationship among a company's information transparency, idiosyncratic risk, and return of its convertible bonds. The effects of a company's idiosyncratic risk on its equity's value volatility and its credit risk are also examined. The findings indicate that when a company discloses a significant amount of information, it is likely to have a higher idiosyncratic risk and a lower credit risk, with no impact on returns on convertible bonds. The volatility of stock returns is positively related to returns on convertible bonds, and it is found that diversified strategies and returns on a company's equity help to improve its credit rating and that a better credit rating triggers an increase in returns on convertible bonds and idiosyncratic risk, indicating that evaluations of the value of convertible bonds must take pure bonds and equity (option) values into account. After excluding conversion values and estimating the idiosyncratic risk on daily, weekly, and monthly bases, this study suggests that there is a positive relation between returns on convertible bonds and information transparency when estimating idiosyncratic risk on a monthly basis and that a positive association also exists between credit rating, idiosyncratic risk, and returns on bonds.     

我国资本市场可转债定价及后市走势研究

从1992年发行第一只可转换公司债券(以下简称“可转债”)至今,中国可转债市场已经历了二十多年的发展。自诞生以来,中国监管机构对可转债的发行要求不断明确,配套监管措施不断完善,可转债市场迅速发展,发行规模不断提高。然而,在2017年以前,虽然可转债的发行规模增长迅速,但其融资总额占资本市场股权产品总融资规模的比重仍处于较低水平。究其原因,一方面是因为可转债的发行主体仅限于上市公司,股权融资存在较大的不确定性;同时可转债的定价条款过于复杂,市场接受程度较低。随着2017年证监会对可转债产品的审核标准进一步明确,可转债发行规模高速增长,目前已成为资本市场上不可忽视的品种。为确定可转债定价方式,本文以“广汽转债”历年来的市场价格为数据基础,以B-S模型为分析模型,通过实证分析寻求影响可转债定价的主要因素,对未来可转债定价的研究具有一定的借鉴意义。