Recherche — Vincent Grégoire
Documents de travail
Who Wins and Who Loses In Prediction Markets? Evidence from Polymarket
avec Pat Akey, Nicolas Harvie, Charles Martineau
Investing in Artificial General Intelligence
Noisy FOMC Returns? Information, Price Pressure, and Post-Announcement Reversals
avec Oliver Boguth, Adlai Fisher, Charles Martineau
Relative Performance Evaluation for Asset Managers: A Quantitative Assessment
avec Juan Sotes-Paladino
Size Distortions in Robust Estimators: Implications for Asset Pricing
avec Nicolas Harvie, Anthony Sanford
MeatPy: A Python Framework for Limit Order Book Reconstruction and Analysis
avec Charles Martineau
Publications
Price Revelation from Insider Trading: Evidence from Hacked Earnings News
Journal of Financial Economics, Volume 143, Issue 3, 2022
avec Pat Akey, Charles Martineau
How is Earnings News Transmitted to Stock Prices?
Journal of Accounting Research, Volume 60, Issue 1, 2022
avec Charles Martineau
Inverted Fee Structures, Tick Size, and Market Quality
Journal of Financial Economics, Volume 134, Issue 1, 2019
avec Carole Comerton-Forde, Zhuo Zhong
Shaping Expectations and Coordinating Attention: The Unintended Consequences of FOMC Press Conferences
Journal of Financial and Quantitative Analysis, Volume 54, Issue 6, 2019
avec Oliver Boguth, Charles Martineau
The Rise of Passive Investing and Index-linked Comovement
North American Journal of Economics and Finance, Volume 51, 101059, 2020
Actes de conférence
Extracting the Structure of Press Releases for Predicting Earnings Announcement Returns
Proceedings of the 6th ACM International Conference on AI in Finance, 2025
avec Yuntao Wu, Ege Mert Akin, Charles Martineau, Andreas Veneris
Mitigating Spillover Effects of Ransomware in Financial Markets: Lessons from the LockBit Attacks
International Symposium on Foundations and Practice of Security, 2025
avec Frederic Schlackl, Alina Dulipovici
Travaux étudiants supervisés
Circular Economy: A Fintech Driven Solution for Sustainable Practices
Fintech and Sustainability: How Financial Technologies Can Help Address Today's Environmental and Societal Challenges, Palgrave Macmillan, pp. 149-168, 2023
avec Kevin Guay
HFTViz: Visualization for the exploration of high frequency trading data
Information Visualization, Volume 21, Issue 2, 2022
avec Javad Yaali, Thomas Hurtut
Alternative Data
Big Data in Finance: Opportunities and Challenges of Financial Digitalization, Palgrave Macmillan, pp. 13-33, 2022
avec Noah Jepson
Autres contributions à la recherche
Documents de travail permanents
Publications pré-doctorat
Using copulas to model price dependence in energy markets
Energy risk, Volume 5, Issue 5, 2008
avec Christian Genest, Michel Gendron
Visible and infrared imagery for surveillance applications: software and hardware considerations
Quantitative InfraRed Thermography Journal, Volume 4, Issue 1, 2007
avec Amar El-Maadi, Louis St-Laurent, Hélène Torresan, Benoit Turgeon, Donald Prévost, Patrick Hébert, Denis Laurendeau, Benoit Ricard, Xavier Maldague
How is Earnings News Transmitted to Stock Prices?
Journal of Accounting Research, Volume 60, Issue 1, 2022
avec Charles Martineau
Résumé
We examine the speed and mechanism of the price discovery process following earnings announcements in the after-hours market, a very illiquid trading environment. Prices reflect earnings surprises mostly through changes in quotes rather than through trades. Following positive announcement surprises, ask prices adjust quickly while bid prices are slower to adjust, and vice versa for negative surprises. Returns computed from trade prices underestimate the speed and magnitude of price reactions following announcements relative to returns computed from quotes. These findings emphasize the importance of using quotes and not trade prices when examining intraday price discovery. Because firm announcements such as earnings generally occur in the after-hours market, using quotes is crucial as trading is sparse. We further illustrate the importance of quotes when examining the price discovery process around analyst recommendation revisions.
BibTeX
@article{gregoire2022earnings,
title={How is earnings news transmitted to stock prices?},
author={Gr{\'e}goire, Vincent and Martineau, Charles},
journal={Journal of Accounting Research},
volume={60},
number={1},
pages={261--297},
year={2022},
publisher={Wiley}
}