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- All HBS Web
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- News (72)
- Research (565)
- Events (12)
- Multimedia (3)
- Faculty Publications (311)
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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.
- 2019
- Working Paper
Judgment Aggregation in Creative Production: Evidence from the Movie Industry
By: Hong Luo, Jeffrey T. Macher and Michael Wahlen
This paper studies a novel, light-touch approach to aggregate judgment from a large number of industry experts on ideas that they encounter in their normal course of business. Our context is the movie industry, in which customer appeal is difficult to predict and... View Details
Keywords: Judgment Aggregation; Creativity; Film Entertainment; Judgments; Motion Pictures and Video Industry
Luo, Hong, Jeffrey T. Macher, and Michael Wahlen. "Judgment Aggregation in Creative Production: Evidence from the Movie Industry." Harvard Business School Working Paper, No. 19-082, January 2019. (Revised September 2019.)
- Winter 2013
- Article
The New Patent Intermediaries: Platforms, Defensive Aggregators and Super-Aggregators
By: Andrei Hagiu and David B. Yoffie
The patent market consists mainly of privately negotiated, bilateral transactions, either sales or cross-licenses, between large companies. There is no eBay, Amazon, New York Stock Exchange, or Kelley's Blue Book equivalent for patents, and when buyers and sellers do... View Details
Keywords: Intellectual Property; Platforms; Intermediaries; Aggregator; Patents; Digital Platforms; Marketplace Matching; Distribution Channels
Hagiu, Andrei, and David B. Yoffie. "The New Patent Intermediaries: Platforms, Defensive Aggregators and Super-Aggregators." Journal of Economic Perspectives 27, no. 1 (Winter 2013): 45–66.
- November 2018
- Technical Note
Aggregate Demand and Aggregate Supply
By: Alberto Cavallo
Cavallo, Alberto. "Aggregate Demand and Aggregate Supply." Harvard Business School Technical Note 719-032, November 2018.
- October 2021
- Article
Judgment Aggregation in Creative Production: Evidence from the Movie Industry
By: Hong Luo, Jeffrey T. Macher and Michael Wahlen
We study a novel, low-cost approach to aggregating judgment from a large number of industry experts on ideas that they encounter in their normal course of business. Our context is the movie industry, in which customer appeal is difficult to predict and investment costs... View Details
Keywords: Judgment Aggregation; Quality Uncertainty; Creative Industry; Project Evaluation And Selection; Creativity; Film Entertainment; Judgments; Motion Pictures and Video Industry
Luo, Hong, Jeffrey T. Macher, and Michael Wahlen. "Judgment Aggregation in Creative Production: Evidence from the Movie Industry." Management Science 67, no. 10 (October 2021): 6358–6377.
- 05 Jul 2006
- Working Paper Summaries
Empirical Tests of Information Aggregation
- Research Summary
Firm and aggregate volatility
US publicly traded companies have become more volatile over the postwar period. This trend has been the result of increased competition in product markets through deregulation, through more intensive innovation activity, and through easier access to capital markets.... View Details
- 2005
- Working Paper
Aggregate Corporate Liquidity and Stock Returns
By: Robin Greenwood
Aggregate investment in cash and liquid assets as a share of total corporate investment is negatively related to subsequent U.S. stock market returns between 1947 and 2003. The share of cash in total investment is a more stable predictor of returns than scaled price... View Details
- 2022
- Working Paper
Confidence, Self-Selection and Bias in the Aggregate
By: Benjamin Enke, Thomas Graeber and Ryan Oprea
The influence of behavioral biases on aggregate outcomes like prices and allocations depends in part on self-selection: whether rational people opt more strongly into aggregate interactions than biased individuals. We conduct a series of betting market, auction and... View Details
Enke, Benjamin, Thomas Graeber, and Ryan Oprea. "Confidence, Self-Selection and Bias in the Aggregate." NBER Working Paper Series, No. 30262, July 2022.
- January 1997 (Revised March 1998)
- Background Note
Fiscal Policy: Managing Aggregate Demand
Introduces the concept of fiscal policy. View Details
Kennedy, Robert E. "Fiscal Policy: Managing Aggregate Demand." Harvard Business School Background Note 797-076, January 1997. (Revised March 1998.)
- September 2018
- Article
Aggregation of Consumer Ratings: An Application to Yelp.com
By: Weijia Dai, Ginger Jin, Jungmin Lee and Michael Luca
Because consumer reviews leverage the wisdom of the crowd, the way in which they are aggregated is a central decision faced by platforms. We explore this "rating aggregation problem" and offer a structural approach to solving it, allowing for (1) reviewers to vary in... View Details
Keywords: User Generated Content; Crowdsourcing; Yelp; Social and Collaborative Networks; Information; Internet and the Web; Learning; Mathematical Methods; E-commerce
Dai, Weijia, Ginger Jin, Jungmin Lee, and Michael Luca. "Aggregation of Consumer Ratings: An Application to Yelp.com." Quantitative Marketing and Economics 16, no. 3 (September 2018): 289–339.
- 16 July 1999
- Article
Measuring Aggregate Process Performance Using AHP
By: Frances X. Frei and Patrick T. Harker
Frei, Frances X., and Patrick T. Harker. "Measuring Aggregate Process Performance Using AHP." European Journal of Operational Research 116, no. 2 (16 July 1999): 436–442.
- 1991
- Comment
Commentary: Monetary Aggregates and Their Uses
By: Julio J. Rotemberg
Keywords: Money
Rotemberg, Julio J. "Commentary: Monetary Aggregates and Their Uses." Monetary Policy on the 75th Anniversary of the Federal Reserve System (1991). (Proceedings of the Fourteenth Annual Economic Policy Conference of the Federal Reserve Bank of St. Louis.)
- 1994
- Article
Energy Taxes and Aggregate Economic Activity
By: J. J. Rotemberg and Michael Woodford
Rotemberg, J. J., and Michael Woodford. "Energy Taxes and Aggregate Economic Activity." Tax Policy and the Economy 8 (1994): 159–195.
- June 2017
- Article
Does Aggregated Returns Disclosure Increase Portfolio Risk Taking?
By: John Beshears, James J. Choi, David Laibson and Brigitte C. Madrian
Many experiments have found that participants take more investment risk if they see returns less frequently, see portfolio-level returns (rather than each individual asset’s returns), or see long-horizon (rather than one-year) historical return distributions. In... View Details
Beshears, John, James J. Choi, David Laibson, and Brigitte C. Madrian. "Does Aggregated Returns Disclosure Increase Portfolio Risk Taking?" Review of Financial Studies 30, no. 6 (June 2017): 1971–2005.
- Fast Answer
Aggregate financial ratios: including private company data
How do I find aggregate industry ratios that include private companies? Industry ratios provide a way to compare and analyze the correlation of diverse financial data for an entire industry. They can be used to compare the performance of... View Details
- 27 Feb 2019
- Working Paper Summaries
Judgment Aggregation in Creative Production: Evidence from the Movie Industry
- January 1987
- Article
Dividend Behavior for the Aggregate Stock Market
By: Terry A. Marsh and Robert C. Merton
Marsh, Terry A., and Robert C. Merton. "Dividend Behavior for the Aggregate Stock Market." Journal of Business 60 (January 1987): 1–40.
- October 1982
- Article
Monopolistic Price Adjustment and Aggregate Output
By: J. J. Rotemberg
Keywords: Price
Rotemberg, J. J. "Monopolistic Price Adjustment and Aggregate Output." Review of Economic Studies 49 (October 1982): 517–531.
- spring 1989
- Article
Sensitivity, Precision and Linear Aggregation of Signals for Performance Evaluation
By: R. Banker and S. Datar
Keywords: Performance
Banker, R., and S. Datar. "Sensitivity, Precision and Linear Aggregation of Signals for Performance Evaluation." Journal of Accounting Research 27, no. 1 (spring 1989): 21–39.