Petros Katsoulis is a PhD Candidate in Finance at Cass Business School. His research interests lie in macroprudential regulation and financial stability, focusing on the empirical assessment of the contribution of financial institutions to systemic risk, by looking at their interactions with market-based finance. During his studies he has worked as a PhD intern at the Central Bank of Ireland where he developed An Lonn Dubh, the Bank's macroprudential stress testing framework for investment funds, and conducted research on Irish exchange-traded funds. He has also interned at the Bank of England where he worked on the calibration of the price impact of asset sales from UK banks to improve the Bank's fire sale models, and conducted research on the effects of macroprudential regulation on the UK repo market.