FinTech Seminar - November

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FinTech Seminar - November

NUS–SKKU FinTech Seminar Series

When and where

Date and time


Innovation 4 (i4.0) Building 3 Research Link Level 01-05 (Conference Room) Singapore, 117602 Singapore

Map and directions

How to get there

About this event

The NUS–SKKU FinTech Seminar Series is a collaborative effort by the Asian Institute of Digital Finance (AIDF) at NUS and Department of FinTech at SKKU.

This seminar will be conducted in a hybrid format (In-Person and Online Live Webinar).

Please note the different locations for the event:

- In-Person (NUS) : Innovation 4 (i4.0) Building, 3 Research Link, Level 01-05 (Conference Room), Singapore, 117602

- Online (Zoom Link will be sent via email 2 days before and morning of the event)

The Wolfs of WallStreetBets

FinTech Seminar (November): Simon Trimborn

The market frenzy of GameStop (GME) in January 2021 caused a short squeeze which even led to an investigation by the US congress. Users of the Reddit platform WallsStreetBets jointly caused market disruptions bringing hedgefonds and institutional investors into difficulties which puts at question the determinants behind the communities activities. In this study we analyse the posting behavior of the users on WallStreetBets before, during and after the market frenzy. We develop a sparse network model and propose a changepoint detection framework to analyse the change in behavior of users dependent on general network metrics, the community behavior and the posting behavior of other users. We observe that influencers who change their behavior before the market frenzy did so unaffected by the network state or other users. Though influencers who changed their behavior during the frenzy were driven by the network activity and other users. We observe an impact from a group of influencers on the community but also from the overall network activity which suggests that the community developed its own dynamics, further spurring their activity.