Research agenda

Financial markets

Empirical research into how attention, sentiment, and social networks shape investor behavior and financial-market dynamics.

01 · Agenda

Research at the intersection of behavior and econometrics

Current focus

My current research primarily focuses on the importance of retail investors' attention and sentiment generated on social media platforms such as Twitter, StockTwits, and Reddit for the functioning of financial markets from an empirical perspective. In several research projects, we assess the causal impact of social-media attention on retail investors' trading behavior in classical stock markets and enhance financial forecasting models by directly incorporating sentiment, attention, and network structure. This helps us detect volatility regimes, analyze spillovers between assets, and derive asset pricing implications across financial markets.

02 · Papers

Selected work

Working paper · 2026

Memes to Markets: Causal Evidence on WallStreetBets and Robinhood Trading

Enrico G. De Giorgi, Christoph Hirt, and Jule Schüttler. Swiss Finance Institute Research Paper Series 26-17. An earlier version was presented at the 18th International Joint Conference CFE-CMStatistics in London, UK.

View paper on SSRN

03 · Work in Progress

Ongoing projects

SNF Project

Financial Social Networks

Retail investors interact on social-media platforms, forming networks that shape market dynamics. We analyze the dynamic network structures created by these interactions, the resulting diffusion of information, and their effects on market variables. The project is funded by the Swiss National Science Foundation (SNF).

View abstract at SNF

Ongoing research

Sentiment Regimes for Tail Dynamics

Investor attention and sentiment are known to be important drivers of financial-market dynamics. We analyze their role in the formation of market regimes for predicting the tails of the return distribution.