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All HBS Web
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- Faculty Publications (93)
- January 2022 (Revised March 2022)
- Teaching Note
New Constructs: Disrupting Fundamental Analysis with Robo-Analysts
By: Charles C.Y. Wang and Albert Shin
Teaching Note for HBS Case No. 118-068.
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- December 2021 (Revised October 2023)
- Teaching Note
Accounting for Bitcoin at Tesla
- 2021
- Working Paper
Stock Investors' Returns Are Exaggerated
By: Jesse M. Fried, Paul Ma and Charles C.Y. Wang
The stock market generates less wealth than it appears. We show that total shareholder return (TSR), the standard measure of stock investor performance, substantially exaggerates returns earned by these investors in aggregate, and thus by most investors. The main...
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Keywords:
All-shareholder Returns;
Capital Flows;
Dividend Reinvestment;
Equity Premium;
Total Shareholder Returns;
Stocks;
Investment Return;
Market Timing
Fried, Jesse M., Paul Ma, and Charles C.Y. Wang. "Stock Investors' Returns Are Exaggerated." Harvard Business School Working Paper, No. 22-036, November 2021.
- Winter 2021
- Article
Can Staggered Boards Improve Value? Causal Evidence from Massachusetts
By: Robert Daines, Shelley Xin Li and Charles C.Y. Wang
We study the effect of staggered boards (SBs) using a quasi-experiment: a 1990 law that imposed an SB on all Massachusetts-incorporated firms. The law led to an increase in Tobin's Q, investment in CAPEX and R&D, patents, higher-quality patented innovations, and...
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Keywords:
Staggered Board;
Entrenchment;
Life-cycle;
Tobin's Q;
Innovation;
Profitability;
Investor Composition;
Governing and Advisory Boards;
Investment;
Innovation and Invention;
Institutional Investing;
Value
Daines, Robert, Shelley Xin Li, and Charles C.Y. Wang. "Can Staggered Boards Improve Value? Causal Evidence from Massachusetts." Contemporary Accounting Research 38, no. 4 (Winter 2021): 3053–3084.
- Article
Core Earnings: New Data and Evidence
By: Ethan Rouen, Eric C. So and Charles C.Y. Wang
Using a novel dataset, we show that components of firms' GAAP earnings stemming from ancillary business activities or transitory shocks are significant in frequency and magnitude. These components have grown over time and are dispersed across various sections of the...
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Keywords:
Core Earnings;
Transitory Earnings;
Non-operating Earnings;
Quantitative Disclosures;
Equity Valuation;
Big Data;
Business Earnings;
Financial Reporting;
Valuation;
Analytics and Data Science
Rouen, Ethan, Eric C. So, and Charles C.Y. Wang. "Core Earnings: New Data and Evidence." Journal of Financial Economics 142, no. 3 (December 2021): 1068–1091.
- Article
Should We Embrace Crypto?
Wang, Charles C.Y. "Should We Embrace Crypto?" Harvard Business Review 99, no. 6 (November–December 2021). (Case Study and Commentary.)
- September 2021
- Background Note
DuPont Decomposition of Return on Equity
By: Charles C.Y. Wang and Kaden Chien
Wang, Charles C.Y., and Kaden Chien. "DuPont Decomposition of Return on Equity." Harvard Business School Background Note 122-013, September 2021.
- 2021
- Working Paper
Governance Transparency and Firm Value: Evidence from Korean Chaebols
By: Akash Chattopadhyay, Sa-Pyung Sean Shin and Charles C.Y. Wang
We examine Korean business groups' transition from circular-shareholding structures to (relatively simple) pyramidal-shareholding structures between 2011 and 2018. When firms were removed from ownership loops, chaebol families' control or incentive conflicts in them...
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Keywords:
Business Groups;
Cross Shareholding;
Circular Shareholding;
Pyramidal Ownership;
Governance Transparency;
Ownership Transparency;
Earnings Response Coefficient;
Business Conglomerates;
Corporate Governance;
Valuation;
Business Earnings
Chattopadhyay, Akash, Sa-Pyung Sean Shin, and Charles C.Y. Wang. "Governance Transparency and Firm Value: Evidence from Korean Chaebols." Harvard Business School Working Paper, No. 22-012, September 2021. (Revised November 2021.)
- August 2021
- Teaching Note
Air Products' Pursuit of Airgas
By: Charles C.Y. Wang and Paul M. Healy
Teaching Note for HBS Case Nos. 116-024, 116-025, 118-080, and 118-081.
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- August 2021
- Supplement
Airgas Valuation Instructor
- July 2021 (Revised February 2024)
- Teaching Note
Wirecard: The Downfall of a German Fintech Star
By: Jonas Heese and Charles C.Y. Wang
Teaching Note for HBS Case No. 121-058.
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- July 2021
- Supplement
CIAM Instructor Template
- July 2021
- Supplement
CIAM Student Template
- June 2021
- Teaching Note
Tesla's Bid for SolarCity (A)
Teaching Note for HBS Case No. 118-044.
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- June 2021
- Teaching Note
Growth Investing at Totem Point
By: Suraj Srinivasan and Charles C.Y. Wang
Teaching Note for HBS Case No. 119-091.
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- June 2021 (Revised November 2021)
- Case
Asian Corporate Governance Association: Stemming a 'Race to the Bottom' by Stock Exchanges?
By: Charles C.Y. Wang and Billy Chan
This case describes the movement towards dual-class listings on Asian stock exchanges and the efforts of the Asian Corporate Governance Association (ACGA), a not-for-profit shareholder advocacy group, to discourage this trend. As a not-for-profit organization with no...
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Keywords:
Corporate Governance;
Governance Controls;
Nonprofit Organizations;
Stocks;
Financial Markets;
Financial Services Industry;
Hong Kong;
China;
Asia
Wang, Charles C.Y., and Billy Chan. "Asian Corporate Governance Association: Stemming a 'Race to the Bottom' by Stock Exchanges?" Harvard Business School Case 121-073, June 2021. (Revised November 2021.)
- June 2021
- Article
Short-Termism, Shareholder Payouts, and Investment in the EU
By: Jesse M. Fried and Charles C.Y. Wang
Investor-driven "short-termism" is said to harm EU public firms' ability to invest for the long term, prompting calls for the EU to better insulate managers from shareholder pressure. But the evidence offered—rising levels of repurchases and dividends—is incomplete and...
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Keywords:
Short-termism;
EU;
Payout Policy;
Innovation;
Investment;
Corporate Governance;
Investment Return;
Acquisition;
European Union
Fried, Jesse M., and Charles C.Y. Wang. "Short-Termism, Shareholder Payouts, and Investment in the EU." European Financial Management 27, no. 3 (June 2021): 389–413.
- May 2021 (Revised September 2021)
- Case
Accounting for Bitcoin at Tesla
By: Charles C.Y. Wang and Siyu Zhang
On February 8, 2021, Tesla revealed, through its 10-K filing to the Securities and Exchange Commission (SEC), that it had purchased $1.5 billion of Bitcoin, totaling 7.5% of the company’s cash, and that it planned to accept payments in the cryptocurrency soon. These...
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Keywords:
Bitcoin;
Accounting;
Currency;
Communication Intention and Meaning;
Strategy;
Investment Portfolio;
Emerging Markets;
Risk and Uncertainty;
Value Creation
Wang, Charles C.Y., and Siyu Zhang. "Accounting for Bitcoin at Tesla." Harvard Business School Case 121-074, May 2021. (Revised September 2021.)
- 2021
- Working Paper
Going by the Book: Valuation Ratios and Stock Returns
By: Ki-Soon Choi, Eric So and Charles C.Y. Wang
We study the use of firms’ book-to-market ratios (B/M) in value investing and its implications for comovements in firms’ stock returns and trading volumes. We show B/M has become increasingly detached from common alternative valuation ratios over time while also...
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Choi, Ki-Soon, Eric So, and Charles C.Y. Wang. "Going by the Book: Valuation Ratios and Stock Returns." Harvard Business School Working Paper, No. 21-126, May 2021.
- 2020
- Working Paper
Is Accounting Useful for Forecasting GDP Growth? A Machine Learning Perspective
We provide a comprehensive examination of whether, to what extent, and which accounting variables are useful for improving the predictive accuracy of GDP growth forecasts. We leverage statistical models that accommodate a broad set of (341) variables—outnumbering the...
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Keywords:
Big Data;
Elastic Net;
GDP Growth;
Machine Learning;
Macro Forecasting;
Short Fat Data;
Accounting;
Economic Growth;
Forecasting and Prediction;
Analytics and Data Science
Datar, Srikant, Apurv Jain, Charles C.Y. Wang, and Siyu Zhang. "Is Accounting Useful for Forecasting GDP Growth? A Machine Learning Perspective." Harvard Business School Working Paper, No. 21-113, December 2020.