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The Disposition Effect in Boom and Bust Markets
(2021-02-05)
The disposition effect is implicitly assumed to be constant over time. However, drivers of the disposition effect (preferences and beliefs) are rather countercyclical. We use individual investor trading data covering several ...
A Modern Take on Market Efficiency: The Impact of Trump’s Tweets on Financial Markets
(2021-05-06)
We focus on the role of social media as a high-frequency, unfiltered mass information transmission channel and how its use for government communication affects the aggregate stock markets. To measure this effect, we ...
The Power of ESG Ratings on Stock Markets
(2021-03-10)
This paper studies the impact of environmental, social, and governance (ESG) ratings on investors’ preferences and stock prices. We exploit a change in ESG rating methodology that non-linearly shifted ESG ratings for firms ...
Volatility, Valuation Ratios, and Bubbles: An Empirical Measure of Market Sentiment
(2021-03-24)
We define a sentiment indicator that exploits two contrasting views of return predictability, and study its properties. The indicator, which is based on option prices, valuation ratios and interest rates, was unusually ...
Separating the Effects of Beliefs and Attitudes on Pricing under Ambiguity
(2021-03-10)
The pricing of an ambiguous asset, whose cash flow stream is uncertain, may be affected by three factors: the belief regarding the realization likelihood of cash flows, the subjective attitude towards risk, and the attitude ...
Mirror, Mirror on the Wall: Machine Predictions and Self-Fulfilling Prophecies
(2021-04-20)
We show that disclosing machine predictions to affected parties can trigger self-fulfilling prophecies. In an investment game, we experimentally vary investors’ and recipients’ access to a machine prediction about recipients’ ...
Gender Differences in Financial Advice
(2015-03-04)
We show that financial advisors recommend more costly products to female clients, based onminutes from about 27,000 real-world advisory meetings and client portfolio data. Funds recommended to women have higher expense ...
The salience of ESG ratings for stock pricing: Evidence from (potentially) confused investors
(2021-10-08)
We exploit a modification to Sustainalytics' environmental, social, and governance (ESG) rating methodology, which is subsequently adopted by Morningstar, to study whether ESG ratings are salient for stock pricing. We show ...
Impact of public news sentiment on stock market index return and volatility
(2021-10-11)
Recent advances in natural language processing have contributed to the development of market sentiment measures through text content analysis in news providers and social media. The effectiveness of these sentiment variables ...
Expl(AI)ned: The impact of explainable artificial intelligence on cognitive processes
(2021-06-25)
This paper explores the interplay of feature-based explainable AI (XAI) techniques, information processing, and human beliefs. Using a novel experimental protocol, we study the impact of providing users with explanations ...