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- May 2010
- Article
Aggregate Market Reaction to Earnings Announcements
By: William Cready and Umit G Gurun
This analysis identifies a distinct immediate announcement period negative relation between earnings announcement surprises and aggregate market returns. Such a relation implies that market participants use earnings information in forming expectations about expected... View Details
Cready, William, and Umit G Gurun. "Aggregate Market Reaction to Earnings Announcements." Journal of Accounting Research 48, no. 2 (May 2010): 289–334.
- July 2007
- Article
Earnings Announcement Premia and Limits to Arbitrage
By: Daniel Cohen, Aiyesha Dey, Thomas Lys and Shyam Sunder
We examine the factors underlying the presence of earnings announcement premia. We find that the premia persist beyond the sample period examined in prior studies (ending in 1988), although they decline in magnitude after 1988. Further, premia are lower on the expected... View Details
Cohen, Daniel, Aiyesha Dey, Thomas Lys, and Shyam Sunder. "Earnings Announcement Premia and Limits to Arbitrage." Journal of Accounting & Economics 43, nos. 2-3 (July 2007): 153–180.
- 2017
- Working Paper
Economic Uncertainty and Earnings Management
By: Luke C.D. Stein and Charles C.Y. Wang
In the presence of managerial short-termism and asymmetric information about skill and effort provision, firms may opportunistically shift earnings from uncertain to more certain times. We document empirically that when financial markets are less certain about a firm's... View Details
Keywords: Discretionary Accruals; Uncertainty; Implied Volatility; Earnings Response Coefficient; Risk and Uncertainty; Earnings Management; Financial Markets
Stein, Luke C.D., and Charles C.Y. Wang. "Economic Uncertainty and Earnings Management." Harvard Business School Working Paper, No. 16-103, March 2016. (Revised April 2017.)
- 2005
- Working Paper
Can Mutual Fund Managers Pick Stocks? Evidence from Their Trades Prior to Earnings Announcements
By: Malcolm Baker, Lubomir Litov, Jessica Wachter and Jeffrey Wurgler
We consider measures of stock-picking skill of mutual fund managers based on the earnings announcement returns of the stocks that they hold and trade. Relative to standard approaches, this approach focuses on an especially informative subset of the returns data,... View Details
Keywords: Stocks; Asset Management; Business Earnings; Forecasting and Prediction; Competency and Skills
Baker, Malcolm, Lubomir Litov, Jessica Wachter, and Jeffrey Wurgler. "Can Mutual Fund Managers Pick Stocks? Evidence from Their Trades Prior to Earnings Announcements." NBER Working Paper Series, No. w10685, February 2005. (First Draft in 2004.)
- Article
Can Mutual Fund Managers Pick Stocks? Evidence from Their Trades Prior to Earnings Announcements
By: Malcolm Baker, Lubomir Litov, Jessica Wachter and Jeffrey Wurgler
We consider measures of stock-picking skill of mutual fund managers based on the earnings announcement returns of the stocks that they hold and trade. Relative to standard approaches, this approach focuses on an especially informative subset of the returns data,... View Details
Baker, Malcolm, Lubomir Litov, Jessica Wachter, and Jeffrey Wurgler. "Can Mutual Fund Managers Pick Stocks? Evidence from Their Trades Prior to Earnings Announcements." Journal of Financial and Quantitative Analysis 45, no. 5 (October 2010): 1111 –1131.
- 2022
- Working Paper
Retail Investors’ Contrarian Behavior Around News, Attention, and the Momentum Effect
By: Cheng (Patrick) Luo, Enrichetta Ravina, Marco Sammon and Luis M. Viceira
Using a large panel of U.S. brokerage accounts trades and positions, we show that a large fraction of retail investors trade as contrarians after large earnings surprises, especially for loser stocks, and that such contrarian trading contributes to post earnings... View Details
Keywords: Retail Investors; Post Earnings Announcement Drift; Price Momentum; Behavioral Finance; Investment; Demographics
Luo, Cheng (Patrick), Enrichetta Ravina, Marco Sammon, and Luis M. Viceira. "Retail Investors’ Contrarian Behavior Around News, Attention, and the Momentum Effect." Working Paper, June 2022.
- 2023
- Working Paper
Avoiding Idiosyncratic Volatility: Flow Sensitivity to Individual Stock Returns
By: Marco Di Maggio, Francesco Franzoni, Shimon Kogan and Ran Xing
Despite positive and significant earnings announcement premia, we find that institutional investors reduce their exposure to stocks before earnings announcements. A novel result on the sensitivity of flows to individual stock returns provides a potential explanation.... View Details
Keywords: New Trading; Mutual Funds; Fund Flows; Limits To Arbitrage; Financial Constraints; Earnings Announcements; Institutional Investing; Stocks
Di Maggio, Marco, Francesco Franzoni, Shimon Kogan, and Ran Xing. "Avoiding Idiosyncratic Volatility: Flow Sensitivity to Individual Stock Returns." Harvard Business School Working Paper, No. 23-072, March 2023. (Revise and Resubmit to The Journal of Finance.)
- September 2005 (Revised January 2006)
- Case
Restating Revenues and Earnings at INVESTools, Inc. (A)
By: Michael D. Kimbrough and F. Warren McFarlan
Relates the events leading up to the announcement in February 2005 that INVESTools, a Utah-based provider of investor education services, would be restating prior-year financial statements due to inappropriate revenue recognition. View Details
Keywords: Accounting; Accounting Audits; Financial Statements; Capital Markets; Currency Exchange Rate; Corporate Disclosure; Financial Services Industry; Education Industry; Utah
Kimbrough, Michael D., and F. Warren McFarlan. "Restating Revenues and Earnings at INVESTools, Inc. (A)." Harvard Business School Case 106-009, September 2005. (Revised January 2006.)
- 06 Feb 2006
- What Do You Think?
Should CEOs of Public Companies Offer Earnings Guidance?
an average -3.6 percent three-day return around the announcement to stop guidance. . . . After the elimination of guidance, stock prices lead earnings less, but there is no change in overall stock return... View Details
- 14 Jul 2023
- Blog Post
Harvard Business School Announces Its 2023-2024 Blavatnik Fellows
Harvard Business School (HBS) has announced the 2023-2024 cohort of Blavatnik Fellows. Celebrating its tenth anniversary, the Blavatnik Fellowship in Life Science Entrepreneurship was launched in 2013 as part of a gift to Harvard... View Details
- July 2017
- Article
What Do Measures of Real-Time Corporate Sales Tell Us About Earnings Surprises and Post-announcement Returns?
By: Kenneth A. Froot, Namho Kang, Gideon Ozik and Ronnie Sadka
We develop real-time proxies of retail corporate sales from multiple sources, including approximately 50 million mobile devices. These measures contain information from both the earnings quarter (within quarter) and the period between that quarter's end and the... View Details
Froot, Kenneth A., Namho Kang, Gideon Ozik, and Ronnie Sadka. "What Do Measures of Real-Time Corporate Sales Tell Us About Earnings Surprises and Post-announcement Returns?" Journal of Financial Economics 125, no. 1 (July 2017): 143–162. (Revised from NBER Working Paper No. 22366, June 2016, Harvard Business School Working Paper No. 16-123, April 2016.)
- 25 Oct 2024
- Blog Post
Harvard Business School Announces Latest RISE Fellows
As part of the Harvard Business School (HBS) Advancing Racial Equity action plan, 26 students from the MBA Classes of 2025 and 2026 have been named recipients of a Recognizing Individuals Seeking Equity (RISE) Fellowship. First announced... View Details
- Article
The CMS New Rule on Ambulatory Surgical Centers Earns Only Partial Credit
By: Junaid Nabi and Robert S. Kaplan
The Centers of Medicare and Medicaid Services (CMS) recently announced that it will be removing more... View Details
Keywords: Ambulatory Care; Payment Policy; Health Care and Treatment; Governing Rules, Regulations, and Reforms
Nabi, Junaid, and Robert S. Kaplan. "The CMS New Rule on Ambulatory Surgical Centers Earns Only Partial Credit." Health Affairs Blog (June 2, 2021).
- 29 Jun 2022
- Blog Post
Harvard Business School Announces the 2022-2023 Blavatnik Fellows
consultant at Deloitte. Ilana earned a BS in nursing from the University of Pennsylvania and an MBA from HBS. Hunter Goble (MBA 2022) is the co-founder and CEO of Transcera, a biotech startup harnessing the biology of sphingolipids to... View Details
- 09 May 2016
- Working Paper Summaries
What Do Measures of Real-Time Corporate Sales Tell Us About Earnings Surprises and Post-announcement Returns?
- June 2015
- Supplement
Generating Higher Value at IBM (A): EPS Forecasting Model
By: Benjamin C. Esty and Scott Mayfield
This case analyzes IBM's financial performance and its capital allocation decisions over a 10-year period from 2004-2013, during which IBM returned more than $140B to shareholders through a combination of dividends and share repurchases. During this time, CEO Sam... View Details
- May 2015 (Revised September 2017)
- Case
Generating Higher Value at IBM (A)
By: Benjamin C. Esty and E. Scott Mayfield
This case analyzes IBM's financial performance and its capital allocation decisions over a 10-year period from 2004-2013, during which IBM returned more than $140B to shareholders through a combination of dividends and share repurchases. During this time, CEO Sam... View Details
Keywords: Dividends; Share Repurchases; Earnings Guidance; Financial Statement Analysis; Financial Ratios; Payout Policy; Earnings Per Share (EPS); Earnings Management; Change Management; Leadership; Transformation; Financial Strategy
Esty, Benjamin C., and E. Scott Mayfield. "Generating Higher Value at IBM (A)." Harvard Business School Case 215-058, May 2015. (Revised September 2017.)
- June 2015 (Revised September 2017)
- Supplement
Generating Higher Value at IBM
By: Benjamin C. Esty and Scott Mayfield
This case analyzes IBM's financial performance and its capital allocation decisions over a 10-year period from 2004-2013, during which IBM returned more than $140B to shareholders through a combination of dividends and share repurchases. During this time, CEO Sam... View Details
- Forthcoming
- Article
Passive Ownership and Price Informativeness
By: Marco Sammon
I show that passive ownership negatively affects the degree to which stock prices anticipate earnings announcements. Estimates across several research designs imply that the rise in passive ownership over the last 30 years has caused the amount of information... View Details
Keywords: Passive Ownership; ETFs; Market Efficiency; Price; Investment Funds; Stocks; Communication
Sammon, Marco. "Passive Ownership and Price Informativeness." Management Science (forthcoming). (Pre-published online September 17, 2024.)
- 2024
- Working Paper
The Retail Habitat
By: Toomas Laarits and Marco Sammon
Retail investors trade hard-to-value stocks. Controlling for size, stocks with a high share of retail-initiated trades are composed of more intangible capital, have longer duration cash-flows and a higher likelihood of being mispriced. Consistent with retail-heavy... View Details
Keywords: Retail; Retail Trade; Intangible Capital; Mispricing; Investment; Valuation; Business Earnings
Laarits, Toomas, and Marco Sammon. "The Retail Habitat." Working Paper, October 2024.