Modern Economy
Vol.09 No.05(2018), Article ID:84514,14 pages

Determinants and Consequences of Share Repurchase Decisions

Rebecca Abraham, Judith Harris, Joel Auerbach

Nova Southeastern University, Fort Lauderdale, USA

Copyright © 2018 by authors and Scientific Research Publishing Inc.

This work is licensed under the Creative Commons Attribution International License (CC BY 4.0).

Received: March 15, 2018; Accepted: May 13, 2018; Published: May 16, 2018


This paper explores the determinants of share repurchase decisions within the context of a modern conceptual framework. Empirically, it categorizes such determinants by firm size, stage of the product life cycle, membership in the technology sector, ownership of overseas cash reserves, and institutional ownership. Share repurchases were used to boost earnings per share temporarily. Such effects dissipated over 1 year and 5 years. Certain categories of firms used share repurchase to grow through acquisitions, while others used share repurchase to prevent takeovers. This paper is the first study to examine share repurchase through categories of determinants within the context of short and long-term post-share repurchase performance.


Share Repurchase, Agency Theory, Earnings per Share, Firm Performance

1. Introduction

Corporate finance recognizes shareholder wealth maximization as its core goal. To maximize shareholder wealth, managers must take advantage of growth opportunities by accepting positive net present value projects. Free cash flow generated from these projects may be returned to shareholders in the form of dividends or share repurchase [1] . [2] observed the growth of share repurchase expenditures at an average annual rate of 26.1%.

The relative popularity of the share repurchase option may be attributed to its effect on earnings. Share repurchase reduces the equity base of the firm, thereby automatically increasing earnings per share (EPS). As earnings per share is net income/number of shares outstanding, by reducing the number of shares outstanding, share repurchase increases earnings per share. Every quarter, investment research analysts release consensus forecasts of EPS. Stocks that outperform the consensus forecast transmit a market-validated positive signal causing an immediate surge in stock prices [3] . Conversely, firms that fail to meet the EPS estimate (negative earnings surprises) release a negative signal depressing security returns and inviting individual and investor concern. Inadvertently, the ability of share repurchase to increase earnings per share may exacerbate the positive signal of a positive earnings surprise and lessen the severity of a negative earnings surprise. In a study of large UK firms, [4] observed that earnings per share reacted positively in the immediate aftermath of a stock repurchase. In the pre-social media era, investors scrutinized the firm’s financial decisions for signals of positive or negative future performance. Investors viewed the share repurchase as evidence that the firm had excess cash for distribution to shareholders, thereby boosting stock prices. During this period, market signals from share repurchase served an informational purpose in that they signaled that the firm was cash-rich (free cash flow theory), was capable of earning positive future cash flows (signaling hypothesis), buying stock to compensate managers (option refunding theory), or choosing to compensate shareholders with stock in lieu of dividends (dividend substitution theory). This paper addresses the current literature’s alternate theoretical conceptualizations of share repurchase, addressing their limitations in describing modern market conditions. Then, it sets forth a new conceptualization of share repurchase for a world in which the Internet has rendered information a free good, so that share repurchase decisions have become a supplement to further increase the earnings per share of firms that undertake successful investment in profit-making projects. Finally, the empirical study has the unique features of 1) measuring the motivations for share repurchase decisions in the modern era, 2) measuring the impact of share repurchase on short-term and long-term earnings per share over contemporaneous, 1-year, 3-year, and 5-year periods, and 3) using size, product life-cycle, technology, overseas cash ownership, and institutional ownership subsamples. The limitation of the study in that it relies on COMPUSTAT data which is confined to US firms, so that the results may not be generalizable internationally. The paper is organized as follows. Section 1 is an Introduction, Section 2 is the Literature Review and Hypotheses Development, Section 3 is the Methodology, Section 4 consists of Results, and Section 5 presents Conclusions and Recommendations for Future Research.

2. Literature Review and Hypotheses Development

2.1. Free Cash Flow Theory

Early theories of the motivation for stock repurchase decisions flowed from its aforementioned influence on earnings per share. The free cash flow theory originated from [5] ’s contention that managers are responsible in their deployment of free cash flows. Free cash flows are generated after the payment of all expenses. In the past, these free cash flows were used to explore profitable projects, after which any excess was distributed to the shareholders as dividends or used to repurchase stock. It follows that cash-rich firms with few profitable projects will spend fewer funds on these projects than their counterparts with less cash and a large number of profit-making opportunities (see [6] , for a review). Accordingly, cash-rich firms will distribute excess cash flows as shareholders will object to these funds being invested in unprofitable investments.

2.2. Signaling Hypothesis

The signaling hypothesis’s popularity ( [7] [8] , see [1] , for a review) stems from its position that stock repurchases are undertaken by firms that are undervalued, signaling superior future cash flows. Surveys by [9] and [10] found that managers were keen to signal successful future performance. [11] posited that share repurchases occur when shares are undervalued so that the repurchase transfers stock from selling shareholders to non selling insiders. The market is unaware of the identities of buyers and sellers and continues to undervalue the stock in the post-repurchase period. [12] observed a significant correlation between positive abnormal stock returns and the private information motivating the purchase of stock by insiders.

2.3. Option Refunding

Yet another early theory pertains to the need for firms to maintain an inventory of stock through share repurchase to fund executive stock option programs and fund stock mergers. For stock mergers, acquirers offer holders of target stock shares in the consolidated, post-acquisition firm at premium stock prices. This stimulates them to repurchase their own stock for such sales to be undertaken. Given the small volume of stock mergers in relation to all mergers ( [13] ), it is possible that such option refunding may also not be a significant source of shares repurchased. Further, stock mergers release a strong negative signal that the firm lacks cash, stimulating managers to avoid this form of merger. This contention is borne out by surveys of executives which show option refunding as a less important impetus for share repurchase, particularly over time, with [10] and [14] finding diminishing importance for option refunding compared to earlier surveys of managers [9] .

2.4. Dividend Substitution

The final theory of share repurchase is dividend substitution. The cash flow of a firm may be distributed to shareholders in the form of dividends or through share repurchase. Dividends have historically provided a signal of the stability of future earnings. [15] documented managerial confidence in the ability of dividends to transmit the signal that the firm would maintain a constant stream of future earnings. At its very minimum, the firm would continue to operate as a viable financial entity, meeting its obligation to stakeholders. This function is particularly relevant for cash-rich, mature firms which have a line of existing products that generate considerable amounts of cash. In contrast, share repurchase does not offer the perception of permanent financial stability. It is undertaken by firms with more volatile cash flows, who do not have the stream of cash flows to permanently pay a steady level of dividends. The favorable tax treatment of share repurchase over dividends further encourages repurchase.

2.5. Rationale for a New Framework

With the advent of the Internet, hitherto private information has become public, so that information asymmetry has lessened. Managers formerly had sole access to information about the firm’s investments in new products, the fate of existing products, the deployment of human capital and the pursuit of new markets. The dissemination of news instantaneously through social media has revealed this information to the investment community. Individual investors may make projections of firm decision-making ability and, in turn, performance, based on the news, without having to rely on signals from dividend payouts or share repurchases. Therefore, the signaling theory’s dominance is compromised.

The dividend substitution theory has diminished in value as well. In the pre-Internet world, high dividend payout ratios signaled a stable level of earnings to prevail at a steadily growing rate into the future. Yet, in the decade after the advent of the Internet, [15] observed in surveys of managers that there was extreme reluctance to cut dividends. Managers preferred to forego certain profit-making projects to preserve dividends at the existing level. Sixty-five percent of survey respondents preferred to raise external funds before reducing dividends. What is the adverse consequence of dividend reduction that management wishes to prevent so steadfastly? A reduction in dividends signals financial distress and bankruptcy. Since it is the norm to pay out some level of dividends, the only incremental information conveyed by dividends is that their reduction indicates the firm’s inability to achieve a minimum level of earnings. The informational role of share repurchase is limited. Share repurchase, by definition, increases earnings per share by reducing the number of shares outstanding. This outcome could generate positive earnings surprises and boost stock returns for the forthcoming quarter. [16] found that the reduction in stock returns from the conversion of convertible bonds to stock was 2.5% less when this conversion was combined with share repurchase as the increase in earnings per share from share repurchase partially offsets the reduction in stock returns from the convertible bond conversion. As neither dividends nor share repurchase convey information about future performance, and since they have different informational roles, i.e. dividends as signals of financial distress and share repurchase as a source of higher earnings per share, share repurchase is not a substitute for dividend payout.

The cash flow theory envisions a hierarchy for the disbursement of free cash flows. Dividends lead the hierarchy, followed by investment in profit-making opportunities, with share repurchase being a residual choice. If funds remain after they are deployed in the payment of dividends and investment in positive (NPV) projects, they are directed to the repurchase of shares. Current practice challenges this hierarchy. Dividend payout is the norm, so that they are no longer part of a decision-making hierarchy. Therefore, they view investment in profit-making opportunities is indicative of new products and new markets leading to future growth and profitability. Firms that engage in these actions are valued at a higher level, outperform earnings estimates and have higher sustained stock returns. Share repurchase provides a short-term benefit to investors in boosting EPS and stock returns. Investment in profit-making opportunities is the primary measure of management’s ability to achieve future long-term growth with share repurchase complementing this effort with a positive impact on short-term earnings. Eighty percent of managers surveyed in the [15] study considered investing in positive NPV projects as taking precedence over share repurchase.

2.6. The New Paradigm

The assumptions of a [17] market consist of 1) all investors having equal and costless access to information about stock prices, 2) indifference to the form of this wealth, whether cash or stock, 3) and perfect certainty of the profitability of each investment opportunity. Social media access assures ready access to corporate information so that investors may have much information about the firm’s products, markets, image, and future prospects. The payment of a regular dividend renders dividend payments to be less informative about the firm’s future performance. The individual investor directs attention to the firm’s ability to capitalize on future growth opportunities. Is the firm producing new products? Is it seeking new markets if its existing products have reached market saturation? Is it growing through acquisition of product innovators if it does not wish to invest in in-house research and development? Annual reports, Form 10Ks, investment analyst reports, 24-hour electronic and social media can supplement technical reports with news items, anecdotes, personal opinion, tweets, and blogs to respond to these queries. Firm value is viewed in terms of the earning power of assets, not the signaling power of market imperfections, such as dividends and shares repurchased. [17] proposed the investment opportunities approach to the market valuation of assets. Real assets may be tangible, such as manufactured products, or intangible such as inventions, patents, copyrights, brand loyalty, or market access. They posit that the value of the firm is the present value of a perpetuity of profits composed of some proportion of profit attributable to these real assets together with profits generated by existing investments in real assets.

Large firms, with large cash reserves may grow through acquisitions, i.e. they may purchase another firm, rather than undertaking their own research and development, such as a large pharmaceutical firm. Alternatively, they could purchase another firm in a cash or stock merger to diversify risk. The stock merger provides the impetus for acquiring stock through cash repurchase to exchange with target shareholders.

In this environment of open access to information, share repurchase, by reducing the equity base of the firm, and in turn, boosting earnings per share fails to provide information about future performance. Retained earnings perform the signaling function, depending upon whether the investment in real assets is profitable, so that investors do not need to surmise from share repurchase that the firm has excess cash.

H1: For all firms, retained earnings will significantly predict the decision to repurchase shares.

H2: For large firms, investment in target firms with high levels of research and development expenditure, will significantly predict the decision to repurchase shares.

Given that this model assumes that a level of dividend payout is set by management, and is maintained into the future for fear of adverse signaling, followed by investment in positive NPV projects, followed by share repurchase, a firm would have to be cash-rich in order to meet all of the dividend, profit-making, and share repurchase objectives. It follows that large, mature or declining “cash cow” industries will continue to generate a stream of cash into the for seeable future. They may be in a position to increase dividends.

H3: For large, mature, and declining firms, dividends will significantly predict shares repurchased.

Non-technology firms, are large service firms which are cash-constrained after paying for acquisitions. Their cash flow becomes negative, given that they have to fund acquisitions or invest in the research and development of acquisitions partly with cash. The balance of the acquisition will be funded through share repurchase. In other words, option refunding is the basis for stock repurchase in non-technology firms.

H4: For non-technology firms, decreases in cash flow, along with increases in investment in acquisitions, or the research and development of target firms will significantly predict shares repurchased.

Some of the large, mature manufacturers may be too cash constrained to fund share repurchase after dividend payouts and investment in positive NPV projects. Such firms may employ cash flow from depreciation tax shields to fund repurchase.

H5: For large mature firms, increases in depreciation may predict the decision to repurchase shares.

Introductory or startup firms are often initiated by a creative individual who invests in research and development to produce an innovative product or service. The firm, in its early years, is cash-constrained. It does not have the production facilities of a large manufacturer to employ cash-generated depreciation tax shields. The cash constraint may be alleviated if the firm is acquired, but this option conflicts with the individualism of the entrepreneur. The firm may employ scarce cash to repurchase shares, rendering it even more cash-constrained and unattractive to a takeover.

H6: For introductory firms, decreases in cash flow, depreciation and research and development of acquisitions may predict the decision to repurchase shares.

Growth firms have progressed beyond the introductory stage, but wish to expand market share by risky acquisitions. Risk is likely to be market risk, affecting the broad market, which is less uncertain than the firm-specific risk of the startup. Market risk increases returns, fulfilling the growth objectives of these firms. Any excess cash remaining after funding the purchase of acquisitions may be used to repurchase shares.

H7: At growth firms, increases in market risk and investment in acquisitions are determinants of the share repurchase decision.

The technology sector consists of both large and small firms engaged in chip manufacturing, app development, smartphones and accessories, etc. Such products require significant investment in research and development either in-house or through acquisitions. The stream of technology-intensive product or service innovations is likely to generate sales at high margin, so that operating income grows rapidly boosting stock prices. Management may wish to be compensated in cash or future acquisitions may be funded through stock mergers, suggesting that option refunding may be the underlying motivator to repurchase shares.

H8: In the technology-sector, research and development, acquisitions, research and development of acquisitions, revenue and operating income are determinants of the share repurchase decision.

US firms had stockpiled $1.2 trillion in cash as of 2017, in overseas accounts to avoid paying a 33% corporate tax rate ( [18] ). This cash hoard stimulated research and development for new product development to create innovative products would stimulate future profitability and revenue growth. This positive signal of increased investment in research and development leading to increases in future net income and revenue growth may be complemented by share repurchase to increase earnings per share during the following quarter.

H9: Research and development expense explains the share repurchase decision in firms with large amounts of overseas cash.

Institutional investors include mutual funds, hedge funds, pension funds, commercial banks, insurance companies, and endowment funds. They invest funds in high-yielding portfolios of high dividend payout stocks and stocks of profitable firms that exceed market returns. [19] set forth that institutional investors are likely to hold high dividend-paying stocks to comply with the 1974 Employee Retirement Security Act which views investment in non-dividend paying stock as imprudent. Such investors have an informational advantage over individual investors in that they have access to industry analysts, management, industry associations, swap, and forward markets. These professionals provide insights into corporate strategy. For example, forward market information has interest rate forecasts, forecasts of exchange rates and the financial viability of foreign customers. A firm that is exposed to risky foreign sources of income may be rejected for inclusion in an institutional investor’s portfolio, while an individual investor, being unaware of this volatility, may include this risky security. Institutional portfolios may thus outperform the market. After these portfolios have been created, shares of such profitable firms may be repurchased to further boost earnings per share and short-term security returns. [20] observed that institutional investor portfolios outperformed their control group counterparts by 2% - 4% prior to the repurchase announcement.

H10: Institutional ownership results in earnings before interest and taxes, and dividends significantly influencing the share repurchase decision.

There is a consideration of the time horizon over which outcomes are measured. If the time horizon is the forthcoming quarter, share repurchases may be successful in increasing EPS. If the time horizon is 1-5 years in the future, merely reducing the equity base may not be sufficient to increase earnings, i.e. the firm must provide evidence of profitability through growth in sales, the development of new products, or the exploration of new markets. Empirically, studies have found some evidence that the market price of common stock reacts positively to stock repurchases in the short-term, but not the long-term ( [21] ).

H11: Share repurchase increases earnings per share contemporaneously, with net income predicting earnings per share 1 year after share buyback, and revenue predicting earnings per share 5 years after share buyback.

3. Methodology

3.1. Sample and Data Collection

The income statements and balance sheets of firms contained in the entire database of Standard and Poor’s COMPUSTAT were extracted for the 2004-2015 period, during which share repurchase accelerated and data completeness was assured. Firms with incomplete information were filtered out of the sample. The remaining firms were split into subsamples of 67 - 10,773 firms. A full listing of subsamples by size may be found in Table 2. Subsamples were created on the basis of 1) size (total assets > the median were termed “large,” while total assets < the median were designated as “small,” 2) product life-cycle, (firm missions and descriptions categorized them as “introductory,” “growth,” “maturity,” and “decline”), 3) technology intensity (firms with SIC codes in the technology sector, designated as “technology-intensive,” and those with non-technology SIC codes designated as “non-technology-intensive”), 4) the firms with an overseas cash hoard identified by [18] designated as “overseas cash,” and 5) firms with “institutional ownership” designated as such.

3.2. Hypotheses Testing

Variables were extracted from both income statements and balance sheets (see Table 1 for descriptive statistics of variables).

3.3. Equations

The following logistic regression equations were specified,

Table 1. Descriptive statistics of determinants of share repurchase decisions (in $ billions).

S H B Y t = α + β 1 A C Q t + β 2 D E P t + β 3 D I V t + β 4 E B I T D A t + β 5 R E T t + β 6 R E V t + β 7 R D t + β 8 C F t + β 9 R D A C Q t + β 10 B E T A t + β 11 L T D A t + β 12 D A t + β 13 N G t + β 14 P S t + β 15 I N S T O W N t (1)

SHBYt = Binary coded dichotomous variable with value = 1 for firms that repurchased shares and value = 9 for firms that did not repurchase shares; ACQt = Value of acquisitions; DEPt = Depreciation expense; DIVt = Dividends; EBITDAt = Earnings before interest and taxes; RETt = Retained Earnings; REVt = Revenue; RDt = Research and development expense; CFt = Cash flow; RDACQt = Research and development expense of acquisitions; BETAt = Beta coefficient; LTDAt = Long-term debt to assets; DAt = Debt to assets; NGt = Negative surprises, 1 = no surprise, 2 = negative surprise; PSt = Product or service, 1 = product, 2 = service; INSTOWNt = percentage of institutional ownership.

All variables were logarithmically transformed. Variables with coefficients β1 to β10 were employed to test the hypotheses. Control variables such as long term debt to assets ratio, debt ratio, negative surprises, and product or service orientation were added to control for their influence on share repurchase. Debt ratios measure the firm’s borrowing to repurchase shares. A firm that has had a history of negative surprises may repurchase shares to achieve a positive surprise to boost stock returns as may mature service firms who wish to be taken over. Hypothesis 11 was tested by an ordinary least squares (OLS) regression of contemporary EPS or 1-year EPS, or 5-year EPS on the number of shares repurchased, contemporaneous net income and contemporaneous revenue (see below). Robustness checks were performed by repeating the regressions for the entire population, with comparable results to those of subsamples.

E P S C O N T t = α + β 1 S H B U Y t + β 2 N E T I N C t + β 3 R E V t (2)

E P S 1 t + 1 = α + β 1 S H B U Y t + β 2 N E T I N C t + β 3 R E V t (3)

E P S 5 t + 5 = α + β 1 S H B U Y t + β 2 N E T I N C t + β 3 R E V t (4)

EPSCONTt = EPS at time of repurchase; EPS1t+1 = EPS, 1 year after repurchase; EPS5t+5 = EPS, 5 years after repurchase; SHBUYt = Number of shares repurchased; NETINCt = Net income at time of repurchase; REVt = Revenue at time of repurchase.

4. Results

As shown in Table 2, hypotheses 1, 2, and 4 - 11 were fully supported. Hypothesis 3 was partly supported for large and declining firms, though not for mature firms.

(a) (b)

Table 2. Determinants of share repurchase decisions: logistic regressions of predictors. On the decision to repurchase or forego share buy backs.

*p < 0.05, **p < 0.01, ***p < 0.001.

There may be evidence of a rational investor, frictionless markets environment espoused by [17] . Businesses focus on producing profitable products in growing markets. All firms capitalize on growth opportunities by reinvesting through increased retained earnings. Dividends are maintained at a steady, possibly gradually increasing level for declining firms, to maintain investor confidence. The cash flow theory does not apply for large, mature, or declining firms in that it assumes that these firms have no growth potential so that they distribute excess cash to shareholders. This paper finds that such firms may embark on growth through acquisitions, investing in the research and development of acquisitions. Additional funds for investment may be provided by depreciation tax shields. Some firms, which are non-technology intensive even invest in in-house research and development. Any cash remaining after these investments may be employed to repurchase shares, temporarily increasing EPS. Growth firms invest in risky acquisitions, though not in the research and development investment of acquisitions. Presumably, they perform internal research and development, with any excess funds being used to repurchase shares. Introductory

Table 3. Results of OLS regressions of performance measured by contemporaneous, 1-year, and 5-year earnings per share (EPS) on the number of shares repurchased.

firms are cash-constrained, using scarce cash to repurchase shares in an effort to appear cash-poor and unattractive in a takeover. In the technology sector, the impetus is on using research and development expenditure to drive the production of a stream of innovative products with growing revenue and operating income. Option refunding through the repurchase of shares provides share-based compensation to the managers of these firms. Certain technology-intensive firms with large overseas cash hoards may use these amounts as collateral to fund research and development spending. Excess cash may be used to repurchase shares. Institutional investors use superior judgment to create portfolios with higher market return than those of retail investors. Share repurchase may increase EPS to provide further elevation of such portfolio returns. Share repurchase had a fleeting, contemporaneous impact on EPS, which quickly dissipated over a 1-year and 5-year period (see Table 3).

Cite this paper

Abraham, R., Harris, J. and Auerbach, J. (2018) Determinants and Consequences of Share Repurchase Decisions. Modern Economy, 9, 966-979.


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