[A] systemic regulator should have the ability to supervise capital structure, supervise liquidity risk and asset-liability management, and supervise risk management – all to minimize the likelihood of systemically important institutions negatively impacting market functioning and economic stability, proving “contagious” to counterparties, and possibly needing government support to avoid further spreading damage or instability.
A systemic regulator or macroprudential supervisor would need not only the ability to monitor systemically important institutions, but also the ability to change behavior if firms are financing a boom by increasing leverage and liquidity risk. It follows that legislation that aims to design an effective systemic regulator needs to provide the regulator with the authority to make such changes.