Essays on Investors' Sentiment and Attention

Essays on Investors' Sentiment and Attention

Author: Daniele Ballinari

Publisher:

Published: 2021

Total Pages:

ISBN-13:

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The first paper investigates the predictive power of investors' sentiment and attention for the stock returns' volatility. We introduce a novel and extensive dataset that combines information from social media platforms, news articles, search engine data, and information consumption. Applying a state-of-the-art sentiment classification technique, we construct measures of investors' sentiment and attention for 18 U.S. stocks and the financial market in general. We identify investors' attention, as measured by the number of Google searches on financial keywords (e.g. «financial market» and «stock market»), and the daily volume of company-specific short messages posted on the social media platform StockTwits to be the most relevant variables. The second paper investigates a potential driver of the predictive power documented in the first paper. We focus on news releases of 360 U.S. companies from the S&P 500 universe and analyze how investors' attention affects the speed at which new information is incorporated in stock prices. Our results show that higher investors' attention around news releases is related to higher contemporaneous volatility. Further, retail investor attention increases the post-announcement volatility, whereas institutional investor attention has a small but negative impact on volatility on days following news releases. The third paper extends the analysis of the first paper to the multivariate stock return volatility. Building on the theoretical and empirical evidence that links the price comovements with retail investors' behavior, we analyze the predictive power of retail investors' sentiment and attention for the realized correlation matrix of 35 Dow Jones stocks. We propose a new model of realized covariances that allows exogenous predictors to influence the correlation dynamics while ensuring the predicted matrices' positive definiteness. Using this model, we find retail investors' attention to have predictive power for return correlations, especially for longer forecasting horizons and during the COVID-19 pandemic. The last paper analyzes in more detail the time-series properties of the daily online investor sentiment measures used in the first two papers. We detect structural breaks in the sentiment series for most of the 360 U.S. companies considered in this paper. We illustrate the economic significance of this finding with a return prediction exercise.


When CSR Meets the Stock Market

When CSR Meets the Stock Market

Author: Amal El aouadi

Publisher:

Published: 2016

Total Pages: 0

ISBN-13:

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This thesis consists of three empirical essays investigating the role of investor attention as a determinant of the relationship between corporate social performance (CSP) and financial performance. Our aim is to rethink the controversial literature on the financial implications of CSR activities by exploring a new premise - investor attention may shape the financial returns on corporate social impact. Since a growing stream of literature has highlighted the role of firm visibility as well as stakeholder attention to connect CSP to financial performance in addition to the complementary literature of investor attention and stock prices, we expect that controlling for firm-specific investor attention would provide novel insights to the literature on the potential financial effects of CSP.A consistent strand of literature has provided interesting evidence of a strong relationship between the firm CSP and its stakeholders such as consumers, employees, suppliers, investors, analysts, activists and communities, and regulators, with the benefits being stronger, the greater the attention to and salience of social activities among stakeholders. We complement and extend this literature by implementing a more granular analysis and particularly we focus on the relevance of investors' attention, a scarce and limited cognitive resource.This research is divided in four chapters. The first chapter is a survey of prior theoretical and empirical literature on the controversial debate of the relation between CSR and financial outcomes. We have particularly reviewed potential mechanisms that allow CSP to translate into CFP. Most importantly, we rely on studies claiming that firm visibility is a crucial factor to connect social impact to financial performance. Another argument of great appeal is the stakeholder attention theory as proposed by Madsen and Rodgers (2015) from which our research question draws its full legitimacy. Then, we have connected the literatures on attention, information, decision making and CSR to remake the CSP-CFP puzzle and highlight potential research hypotheses. A more readable view is provided by Figure 1 (later in this document) which integrates and synthesizes key predictors, outcomes, mediators, and moderators of the CSP-CFP relation by focusing on studies related to CSR and firm visibility thereby introducing the role of investor attention. Figure 1 is not an exhaustive conceptualization of all the intervening variables in this relationship but rather meant as a multilevel lens and guiding framework to which other variables can be added in the future. However, despite all the advancements in assessing the returns on CSR investments, this debate remains unsettled and has yielded conflicting results. Thus, we conducted three empirical essays on the relation between CSP and financial performance and particularly provide new and unique evidence on the role of investor attention to shape this controversial empirical issue. Therefore, in the first essay, we conduct a multi-country event study and investigate the impact of environmental, social and governance (ESG) news headlines on the shareholder wealth. We find that investors do not value positive ESG news headlines but negatively react to negative ESG news headlines. This result is consistent with the idea that social responsibility and irresponsibility are not the two sides of the same coin. Furthermore, evidence reveals that shareholders only react to negative corporate governance related headlines. This suggests that investors may be especially prone to attend to corporate social responsibility (CSR) initiatives that directly impact their own interests as previously suggested by T. M. Jones et al. (2007). Most importantly, investor attention was found to shape the punishment and reward of CSP, after controlling for the additional role of firm's internal moderators such as firm size and advertising expenditure. [...].


Selected Essays in Empirical Asset Pricing

Selected Essays in Empirical Asset Pricing

Author: Christian Funke

Publisher: Springer Science & Business Media

Published: 2008-09-15

Total Pages: 123

ISBN-13: 3834998141

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Christian Funke aims at developing a better understanding of a central asset pricing issue: the stock price discovery process in capital markets. Using U.S. capital market data, he investigates the importance of mergers and acquisitions (M&A) for stock prices and examines economic links between customer and supplier firms. The empirical investigations document return predictability and show that capital markets are not perfectly efficient.


Essays in Behavioral and Corporate Finance

Essays in Behavioral and Corporate Finance

Author: Tomas Hernan Reyes Torres

Publisher:

Published: 2012

Total Pages: 85

ISBN-13:

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This dissertation examines the factors that influence investors' attention to the stock market and the relationship that exists among attention and real output variables including stock returns, trading volume, and volatility. Traditional asset pricing models assume that information is effortlessly obtained and instantaneously incorporated into pricing. This assumption requires that investors devote sufficient attention to the asset, and ignores the existence of various channels through which public information is disseminated. In reality, attention is a scarce cognitive resource which is related to the effort that investors must expend to obtain information; the implications of this contingency of attention on these limitations have been remarkably under-researched in the past. In the first chapter of this study, I familiarize readers with Google Trends data and explain why such data is a better source to proxy for attention than the measures previously used in the literature. Next, utilizing this data, I describe how to measure investors' attention with regard to M\&A announcements, and show that attention is not instantaneous with the release of information, but is, instead, spread over a period surrounding the announcement. Retail investors pay attention and demand information about a firm as the announcement date approaches, during the announcement, and for days afterward. Finally, I present three aggregate measures of attention in the stock market, which are also based on search volume from Google. After constructing these measures, I study how they correlate with, but differ from, existing proxies of attention. In the second chapter, I consider whether limited attention explains the announcement effect bias found in the M\&A literature concerning merger and acquisition announcements. More specifically, I ask: How does variation in investors' attention affect the capital market response to M\&A announcements? To answer this question I rely on the measure for attention to M\&A announcements described in the previous chapter and find that high abnormal attention on the day of announcement predicts high adjusted abnormal returns the day after. This effect is strongest among firms with high standard deviations and betas, and it partially reverses over the following months. The third chapter argues that negative stock market performance attracts more attention from retail investors than comparable positive performance. Specifically, I rely on the three aggregate measures of attention in the stock market to test and confirm the hypothesis that retail investors pay more attention to negative rather than positive extreme returns. Empirical results strongly support that with respect to stock returns investors display this negativity bias in attention allocation. Across all specifications, lagged negative extreme returns are stronger predictors than positive extreme returns of high attention at the stock and market level. I rule out that negative returns are stronger simply because they are more unusual or because negative and positive returns are not symmetrical events to stockholders.


Investor Attention, Information Diffusion and Industry Returns

Investor Attention, Information Diffusion and Industry Returns

Author: Qiongbing Wu

Publisher:

Published: 2015

Total Pages: 14

ISBN-13:

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Using the monthly data for more than 1700 Australian stocks over the period from 1990 to 2009, we investigate whether industry portfolio returns predict the aggregate market. We find that a few industries significantly lead the market even controlling for well-recognized market predictors. However, unlike U.S. studies, we do not find that the ability of an industry to predict the market is closely related to its propensity to forecast economic growth. Instead, we find that the capacity of an industry to lead the market is significantly moderated by proxies for investor attention. In general, more neglected industries are more informative in leading the markets due to delayed investor attention to the information content of these industries; and the information contained in industry portfolio returns is incorporated into the market return more slowly during economic recession when investors pay less attention to the stock markets. Our research provides new empirical evidence in support of the gradual information diffusion hypothesis from a market that differs from the U.S. stock market.


Essays in Behavioral Finance

Essays in Behavioral Finance

Author: Xing Huang

Publisher:

Published: 2013

Total Pages: 236

ISBN-13:

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This dissertation contains three essays in behavioral finance. It explores investors' (non-standard) behaviors and their impacts on market efficiency and market valuations. I strive to empirically characterize how market participants behave, and to identify how these behaviors can improve our understanding of the financial market. The first chapter studies the impact of prior investment experience in an industry on the subsequent purchase of new stocks in the same industry. Using trading records data for households at a large discount broker from 1991 to 1996, I establish that the experience of positive excess returns in a given industry increases the probability of purchasing similar stocks in that industry relative to other industries. This result is robust to industry momentum, wealth effects, and investor heterogeneity. The effect decays when the experience is further in the past. Furthermore, I find that investor sophistication mitigates this experience effect. These results are consistent with mechanisms where investors put more weight on their own experience than on other available historical information when updating the beliefs about an industry's future return. The results are also consistent with investors learning about their stock-picking ability in an industry from their experienced outcomes. In the second chapter, I ask the question: do investors slow to incorporate return-relevant information if it reflects firms' operations abroad? Using the corresponding industry return in the foreign countries, I show that foreign operations information is slowly incorporated into stock prices. A trading strategy exploiting the foreign operations information of multinational firms generates a monthly abnormal return of approximately $0.80$ percentage points, controlling for risk-based factors. The return predictability is not driven by U.S. industry momentum, global industry momentum or foreign country-specific industry momentum. The third chapter further explores the underlying mechanism to explain the market under-reaction to foreign information identified in the second chapter. The return predictability becomes more pronounced for smaller firms and firms with less analyst coverage, lower institutional holdings, lower fraction of foreign operations and more complicated international operations structure. I also find that stock prices respond more to foreign operations information during the month of a quarterly earnings announcement or when there is more foreign news relative to domestic news appearing in the media. In addition, information about firms' operations in Asia is delayed more than information about operations in Europe and English-speaking countries. These results are consistent with the hypothesis that news about multinational firms' foreign operations diffuses gradually, indicating investors' limited attention and processing capacity for foreign information.