International Journal For Multidisciplinary Research

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How well does AI sentiment on ECB rate/QE news predict subsequent short-term Euronext 100 realized volatility?

Author(s) Mr. Dhairya Mittal, Mr. Ruhaan Mukherjee, Mr. Sadashiv Babbar, Mr. Ritvik Kunchakuri, Mr. Aditya Khemani
Country India
Abstract This paper investigates the predictive power of artificial intelligence (AI)-based
sentiment analysis on European Central Bank (ECB) monetary policy
communications—specifically rate decisions and quantitative easing (QE)
announcements—on the short-term realized volatility of the Euronext 100 Index.
Leveraging natural language processing (NLP) techniques, sentiment scores are
extracted from ECB press releases and news coverage. We then assess whether these
sentiment measures can serve as leading indicators for post-announcement market
volatility over one-day to five-day windows. Our empirical analysis utilizes
high-frequency Euronext 100 data and multiple regression models with control
variables, including macroeconomic indicators and lagged volatility. Results indicate a
statistically significant relationship between ECB sentiment and short-term realized
volatility, with dovish sentiment correlating with increased volatility under high
inflationary conditions. These findings offer practical applications for short-term risk
modeling and highlight the potential of AI in understanding how language influences
financial markets.
Keywords AI sentiment analysis, ECB, Euronext 100, quantitative easing, interest rates, NLP, volatility forecasting, realized volatility, monetary policy, financial markets
Field Sociology > Banking / Finance
Published In Volume 7, Issue 5, September-October 2025
Published On 2025-09-06
DOI https://doi.org/10.36948/ijfmr.2025.v07i05.52708

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