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Sammon, Marco Remove Sammon, Marco →

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  • December 2021
  • Article

Trade Policy Uncertainty and Stock Returns
By: Marcelo Bianconi, Federico Esposito and Marco Sammon
A recent literature has documented large real effects of trade policy uncertainty (TPU) on trade, employment, and investment, but there is little evidence that investors are compensated for bearing such risk. To quantify the risk premium associated with TPU, we exploit...  View Details
Keywords: Trade Policy; Uncertainty; Stock Returns; Risk Premium; Tariff Rates; Portfolio Analysis; Trade; Policy; Risk and Uncertainty; Stocks; Investment Return
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  • 2021
  • Working Paper

Intangible Capital and Customer Churn
By: Scott Baker, Brian Baugh and Marco Sammon
Intangible capital is a crucial and growing piece of firms’ capital structure and helps to explain long run trends in concentration and markups. We develop new firm level metrics regarding a key component of intangible capital—customer churn—using a class of household...  View Details
Keywords: Customer Base; Transaction Data; Customer Churn; Intangible Capital; Capital; Capital Structure; Customers
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  • 2021
  • Working Paper

Passive Ownership and Price Informativeness
By: Marco Sammon
I propose three new empirical measures of price informativeness motivated by a theoretical model. I find average price informativeness declined over the past 30 years and passive ownership is negatively correlated with price informativeness. To establish causality, I...  View Details
Keywords: Measurement and Metrics; Theory; Price; Ownership
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  • Article

The Unprecedented Stock Market Reaction to COVID-19
By: Scott Baker, Nicholas Bloom, Steven J. Davis, Kyle Kost, Marco Sammon and Tasaneeya Viratyosin
No previous infectious disease outbreak, including the Spanish Flu, has impacted the stock market as forcefully as the COVID-19 pandemic. In fact, previous pandemics left only mild traces on the U.S. stock market. We use text-based methods to develop these points with...  View Details
Keywords: COVID-19; Stock Market; Health Pandemics; Governance; Policy; Financial Markets
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  • 2020
  • Working Paper

Retail Investors' Contrarian Behavior Around News and the Momentum Effect
By: Marco Sammon, Cheng (Patrick) Luo, Enrichetta Ravina and Luis M. Viceira
We study the role of retail investors in the gradual diffusion of information in financial markets. We show that retail investors tend to trade as contrarians after large earnings surprises, and such contrarian trading contributes to sluggish price adjustment and to...  View Details
Keywords: Retail Investors; Momentum; Earnings Surprises; Investment; Behavior; Information; Financial Markets
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  • 2020
  • Working Paper

What Triggers National Stock Market Jumps?
By: Scott Baker, Nicholas Bloom, Steve Davis and Marco Sammon
We examine newspapers the day after major stock-market jumps to evaluate the proximate cause, geographic source, and clarity of these events from 1900 in the US, 1930 in the UK and 1980 in 12 other countries. We find four main results. First, the United States plays an...  View Details
Keywords: Uncertainty; Policy Uncertainty; Stock Market; Financial Markets; Volatility; Risk and Uncertainty; Policy
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  • Article

Environmental, Social, and Governance Criteria: Why Investors Should Care
By: Ravi Jagannathan, Ashwin Ravikumar and Marco Sammon
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