Mozaffar N. Khan

James M. Collins Visiting Associate Professor of Business Administration

Mozaffar Khan is the James M. Collins Visiting Associate Professor of Business Administration. He teaches Financial Reporting and Control in the MBA Required Curriculum.

He is the Honeywell Professor of Accounting (on leave) and head of the accounting PhD program at the University of Minnesota’s Carlson School of Management where he has served since 2010, and previously served as an Assistant Professor at the MIT Sloan School of Management from 2005 to 2010.

Professor Khan’s research examines the role of accounting information in capital markets. In particular, he has examined the effect of accounting information and accounting quality on equity price formation, the interaction between equity prices and corporate equity issuance and acquisition decisions, the effect of government capital assistance programs on banks’ equity issuance and loan growth during the recent financial crisis, insider trading and short selling, the costs of corporate debt covenant violations, and measurement and effects of qualitative characteristics of accounting information such as accounting quality and conservatism. His research has been published in a variety of leading academic journals, and cited in media outlets such as The Wall Street Journal and The New York Times. His work with Leonid Kogan and George Serafeim on the stock price impact of mutual fund trading pressure has been recognized with a Whitebox Prize Runner-up award.

Professor Khan holds a PhD from the University of Toronto, and since 2009 has served as Associate Editor of the Journal of Accounting and Economics, one of the top 3 academic research journals in the area.

In his spare time Mo enjoys history, movies, and running.

Journal Articles

  1. Institutional Ownership and Corporate Tax Avoidance: New Evidence

    Mozaffar N. Khan, Suraj Srinivasan and Liang Tan

    We provide new evidence on the agency theory of corporate tax avoidance (Slemrod, 2004; Crocker and Slemrod, 2005; Chen and Chu, 2005) by showing that increases in institutional ownership are associated with increases in tax avoidance. Using the Russell index reconstitution setting to isolate exogenous shocks to institutional ownership, as well as a regression discontinuity design that facilitates sharper identification of treatment effects, we find a significant and discontinuous increase in tax avoidance following Russell 2000 inclusion. The tax avoidance involves the use of tax shelters, and immediate benefits include higher profit margins and the likelihood of meeting or beating analyst expectations. Collectively the results shed light on the effect of increased ownership concentration on tax avoidance.

    Keywords: tax avoidance; agency costs; institutional ownership; Private Ownership; Crime and Corruption; Taxation; Agency Theory;


    Khan, Mozaffar N., Suraj Srinivasan, and Liang Tan. "Institutional Ownership and Corporate Tax Avoidance: New Evidence." Accounting Review (forthcoming). View Details
  2. Further Evidence on Consequences of Debt Covenant Violations

    Yu Gao, Mozaffar N. Khan and Liang Tan

    We present new evidence on debt covenant violation (DCV) consequences that have not previously been examined in the literature. In particular, we show that a DCV triggers significant information asymmetry and uncertainty on the part of shareholders and auditors as reflected in higher bid-ask spreads, return volatility, and audit fees. Further, these consequences occur even when lender-imposed costs are relatively lower, consistent with the act of default itself triggering shareholder and auditor uncertainty. The results highlight costs to the firm of having bright lines in contracts, and add to an understanding of the consequences of DCVs.

    Keywords: Accounting;


    Gao, Yu, Mozaffar N. Khan, and Liang Tan. "Further Evidence on Consequences of Debt Covenant Violations." Working Paper, July 2014. (Conditionally accepted, Contemporary Accounting Research.) View Details
  3. Corporate Sustainability: First Evidence on Materiality

    Mozaffar Khan, George Serafeim and Aaron Yoon

    Using newly available materiality classifications of sustainability topics, we develop a novel dataset by hand-mapping sustainability investments classified as material for each industry into firm-specific sustainability ratings. This allows us to present new evidence on the value implications of sustainability investments. Using both calendar-time portfolio stock return regressions and firm-level panel regressions we find that firms with good ratings on material sustainability issues significantly outperform firms with poor ratings on these issues. In contrast, firms with good ratings on immaterial sustainability issues do not significantly outperform firms with poor ratings on the same issues. These results are confirmed when we analyze future changes in accounting performance. The results have implications for asset managers who have committed to the integration of sustainability factors in their capital allocation decisions.

    Keywords: sustainability; Investments; corporate social responsibility; accounting; corporate reporting; regulation; Corporate Social Responsibility and Impact; Integrated Corporate Reporting; Investment; Corporate Governance;


    Khan, Mozaffar, George Serafeim, and Aaron Yoon. "Corporate Sustainability: First Evidence on Materiality." Accounting Review (forthcoming). View Details
  4. Labor Unemployment Insurance and Earnings Management

    Yiwei Dou, Mozaffar N. Khan and Youli Zou

    There is relatively little prior evidence on the potential impact of rank and file employees on financial reporting choices outside union negotiations. We contribute to the literature by providing new evidence that firms appear to manage long-run earnings upward in order to manage employee perceptions of employment security. In particular, we exploit exogenous state-level changes in unemployment insurance benefits and test for partial unwinding of prior upward earnings management when benefits increase. An increase in unemployment benefits makes unemployment relatively less costly and reduces employees' unemployment risk, thereby reducing firms' upward earnings management incentives. Consistent with the hypothesis, we find a significant reduction in abnormal accruals, increased recognition of special items and write downs, and greater downward restatement likelihood following an increase in state-level unemployment benefits. Cross-sectional tests suggest greater unwinding of prior upward earnings management when other upward earnings management incentives are weak and when unemployment risk is a relatively more important determinant of firms' labor costs. Collectively the results provide new evidence of the impact of rank and file employees on firms' financial reporting choices.

    Keywords: Earnings Management; Employment; Insurance; Financial Reporting;


    Dou, Yiwei, Mozaffar N. Khan, and Youli Zou. "Labor Unemployment Insurance and Earnings Management." Journal of Accounting & Economics 61, no. 1 (February 2016): 166–184. View Details
  5. The Capital Purchase Program and Subsequent Bank SEOs

    Mozaffar N. Khan and Dushyantkumar Vyas

    We find that in the aftermath of the recent financial crisis banks replenished only 12% of crisis-related losses through SEOs in 2009 and 2010. However, SEOs are disproportionately conducted by Capital Purchase Program (CPP) recipients, and this is not explained by CPP recipients' economic and regulatory capital needs. SEOs in 2009 and 2010 by CPP recipients alone account for 27% by number, and 52% by dollar amount, of all SEOs by U.S. banks between 1994 and 2010, indicating the CPP is an influential event in the history of U.S. bank SEOs during this period. Controlling for economic and regulatory capital determinants of SEOs, CPP recipients were more likely than non-recipients to have an SEO within four quarters subsequent to CPP receipt. SEO proceeds were used to repay CPP receipts without jeopardizing loan growth. Banks that received CPP funds prior to the passage of the American Recovery and Reinvestment Act (ARRA), and banks with greater reliance on non-traditional banking activities, were more likely to have an SEO expeditiously and repay CPP funds early. Collectively, the results provide new evidence on the realized consequences of the CPP for bank SEOs. The tests suggest the CPP's indirect costs of restrictions on corporate policies and actions as the most likely explanation for the results.

    Keywords: Accounting; Capital; Equity; Financial Crisis; Banks and Banking; Banking Industry; United States;


    Khan, Mozaffar N., and Dushyantkumar Vyas. "The Capital Purchase Program and Subsequent Bank SEOs." Journal of Financial Stability 18 (June 2015): 91–105. View Details
  6. Mutual Fund Trading Pressure: Firm-Level Stock Price Impact and Timing of SEOs

    Mozaffar N. Khan, Leonid Kogan and George Serafeim

    In tests of the equity market timing theory of external finance, the prior literature has used overvaluation identifiers such as high market-to-book and high prior returns that are likely correlated with other determinants of SEOs. We use price pressure resulting from purchases by mutual funds with large capital inflows to identify overvalued equity. This is a relatively exogenous overvaluation indicator as it is associated with who is buying—buyers with excess liquidity—rather than what is being purchased. Using this indicator we document that 1) inflow-driven buying pressure by mutual funds has a pronounced and persistent stock price impact, 2) the probability of an SEO increases by 59%, 3) insider sales increase by 7%, and 4) the probability of completing a stock-based acquisition increases by 20% in the four quarters following the buying pressure. These results provide new evidence that firm managers are able to identify and exploit overvalued equity.

    Keywords: Equity; Market Transactions; Valuation; Capital Structure; Market Timing; Mathematical Methods; Acquisition;


    Khan, Mozaffar N., Leonid Kogan, and George Serafeim. "Mutual Fund Trading Pressure: Firm-Level Stock Price Impact and Timing of SEOs." Journal of Finance 67, no. 4 (August 2012): 1371–1395. View Details
  7. Are Accruals Mispriced? Evidence from Tests of an Intertemporal Capital Asset Pricing Model

    Mozaffar N. Khan

    This paper proposes a risk-based explanation for the accrual anomaly. Risk is measured using a four-factor model motivated by the Intertemporal Capital Asset Pricing Model. Tests of the model suggest that a considerable portion of the cross-sectional variation in average returns to high and low accrual firms is explained by risk. The four-factor model also performs better than some other widely used models in pricing a number of different hedge portfolios.


    Khan, Mozaffar N. "Are Accruals Mispriced? Evidence from Tests of an Intertemporal Capital Asset Pricing Model." Journal of Accounting & Economics 45, no. 1 (March 2008): 55–77. View Details
  8. Estimation and Empirical Properties of a Firm-Year Measure of Accounting Conservatism

    Mozaffar N. Khan and Ross L. Watts

    We estimate a firm-year measure of accounting conservatism, examine its empirical properties as a metric, and illustrate applications by testing new hypotheses that shed further light on the nature and effects of conservatism. The results are consistent with the measure, C_Score, capturing variation in conservatism and also predicting asymmetric earnings timeliness at horizons of up to 3 years ahead. Cross-sectional hypothesis tests suggest firms with longer investment cycles, higher idiosyncratic uncertainty and higher information asymmetry have higher accounting conservatism. Event studies suggest increased conservatism is a response to increases in information asymmetry and idiosyncratic uncertainty.


    Khan, Mozaffar N., and Ross L. Watts. "Estimation and Empirical Properties of a Firm-Year Measure of Accounting Conservatism." Journal of Accounting & Economics 48, nos. 2-3 (December 2009): 132–150. View Details
  9. A Simple Model Relating Accruals to Risk, and its Implications for the Accrual Anomaly

    Mozaffar N. Khan

    This paper models systematic risk as a function of mean-reverting accruals. When the true abnormal returns are zero, but the true betas are empirically unobserved, the model predicts the anomalous pattern of empirical results on the accrual anomaly: (i) CAPM abnormal returns to an accrual hedge portfolio are positive on average, (ii) are positive in almost all years, (iii) decay as the holding period is extended beyond one year, and (iv) the Mishkin (1983) test of market efficiency is rejected. Using simulations, small and plausible degrees of risk mismeasurement also reproduce the magnitudes of prior results on the accrual anomaly.


    Khan, Mozaffar N. "A Simple Model Relating Accruals to Risk, and its Implications for the Accrual Anomaly." Journal of Business Finance & Accounting 39, nos. 1-2 (January–February 2012): 35–59. View Details
  10. Accounting Quality, Stock Price Delay, and Future Stock Returns

    Jeffrey Callen, Mozaffar N. Khan and Hai Lu

    In frictionless capital markets with complete information and rational investors, stock prices adjust to new information instantaneously and completely. However, a substantial body of research studies information imperfections such as asymmetric information and incomplete information. Information imperfections potentially hinder timely price discovery and are likely associated with delayed stock price adjustment to information. Our first research question therefore is whether the quality of accounting information (or "accounting quality") is one such information imperfection that is associated with cross-sectional variation in stock price delay. We define accounting quality as the precision with which financial reports convey information to equity investors about the firm's expected cash flows. Poor accounting quality is likely associated with higher expected returns through uncertainty about stock valuation parameters and incomplete information. Our second research question therefore is whether the accounting quality component of price delay is associated with higher future stock returns. Consistent with our hypotheses, the results show that poor accounting quality is associated with delayed price adjustment and higher future stock returns. Thus, accounting quality plays a role in timely stock price discovery.

    Keywords: Quality; Price; Stocks; Asset Pricing; Accounting;


    Callen, Jeffrey, Mozaffar N. Khan, and Hai Lu. "Accounting Quality, Stock Price Delay, and Future Stock Returns." Contemporary Accounting Research 30, no. 1 (Spring 2013): 269–295. View Details
  11. Do Short Sellers Front-Run Insider Sales?

    Mozaffar N. Khan and Hai Lu

    We study the behavior of short sellers as informed market participants and examine potential sources of their information. Using a newly available dataset with high-frequency short sales data, we find evidence of significant increases in short sales immediately prior to large insider sales, but not prior to small insider sales. We examine a number of explanations that the increase in short sales is driven by public information, either about the firm or about the impending insider sale. The evidence is inconsistent with these explanations, but is consistent with front-running facilitated by leaked information. The front-running appears to be concentrated in firms with poor accounting quality, suggesting that information about a large insider sale reinforces short sellers' adverse opinion about firm value when accounting quality is poor.

    Keywords: Information; Consumer Behavior; Accounting; Financial Services Industry;


    Khan, Mozaffar N., and Hai Lu. "Do Short Sellers Front-Run Insider Sales?" Accounting Review 88, no. 5 (September 2013): 1743–1768. View Details

Book Chapters

  1. Conceptual Foundations of Capital Market Anomalies

    Mozaffar N. Khan


    Khan, Mozaffar N. "Conceptual Foundations of Capital Market Anomalies." Chap. 1 in The Handbook of Equity Market Anomalies: Translating Market Inefficiencies into Effective Investment Strategies, edited by Leonard Zacks. Hoboken, NJ: John Wiley & Sons, 2011. View Details

Working Papers

  1. Cross-firm Return Predictability and Accounting Quality

    Wen Chen, Mozaffar N. Khan, Leonid Kogan and George Serafeim

    We examine the role of accounting quality (AQ), defined as the reliability with which accounting earnings map into cash flows, in stock price formation. We expect that poor AQ is more conducive to fostering differences in higher-order beliefs among investors, and such settings have been shown in prior theoretical work to generate slow price adjustment. Consistent with this, we document significant one-month-ahead positive return predictability from good AQ firms to industry- and size-matched poor AQ firms, but no reverse predictability. In exploring the delayed-information-processing mechanism behind the return cross-predictability, we find that analyst earnings forecast revisions (FR) mimic the return patterns: FR of good AQ firms significantly positively predict one-month-ahead FR of matched poor AQ firms, but there is no reverse predictability. Further, return cross-predictability is concentrated in months with substantial news arrival, but not in no-news months, and is stronger when the good AQ predictor firms have a richer information environment than poor AQ firms as proxied by analyst following and institutional ownership. Finally, using a measure of the linguistic complexity of qualitative information in financial statements to alternatively index accounting quality, we document return predictability from good to poor accounting quality firms, but no reverse predictability. Collectively the results provide direct evidence that complicated accounting affects the speed with which information flows into stock prices.


    Chen, Wen, Mozaffar N. Khan, Leonid Kogan, and George Serafeim. "Cross-firm Return Predictability and Accounting Quality." Working Paper, September 2015. View Details

Cases and Teaching Materials

  1. Accor: Designing an Asset-Right Business and Disclosure Strategy

    Mozaffar Khan and George Serafeim

    Sebastien Bazin was now in charge of Accor, the world's largest French hotelier, a CAC 40 company with 3,600 hotels in 92 countries and a market cap of €10 billion. Previously as the European head of Colony Capital, one of the largest private equity groups and the largest shareholder of Accor, Bazin had since 2005 relentlessly pushed an asset-lite strategy from his perch on the Accor Board in the face of vigorous opposition from employees, senior management, and some Board members. Accor's stock price underperformance and the continuous fight over the strategic direction of the company had created turmoil and turnover in the C-suite and on the Board. After multiple CEO exits, and a failure by the Board to identify the next CEO in 2013, Bazin's offer to resign from Colony and assume the CEO position at Accor was met with incredulity from friends, alarm from Accor employees, and applause from the stock market. But would Bazin be able to deliver on his promises to investors and employees to pursue an asset-right strategy? Was an asset-heavy hotelier viable in today's economic environment? Could the market understand and appropriately value such a firm and what could be its disclosure strategy to ensure a fair valuation of the stock? How long would it be before he could deliver on his promises and show fruit from the restructuring?


    Khan, Mozaffar, and George Serafeim. "Accor: Designing an Asset-Right Business and Disclosure Strategy." Harvard Business School Case 115-036, April 2015. View Details