This paper analyses various issues that need to be tackled when promoting financial stability, reviewing the progress made in certain key areas and the remaining challenges. It explores the measurement of systemic risk and of individual institutions’ contribution to it. It discusses aspects of macroprudential frameworks, including how the countercyclical capital buffer envisaged in Basel III takes into account the properties of the financial cycle and the strengths and weaknesses of macro-stress tests. It analyses some of the challenges of how best to monitor financial systems and the broader economy in order to detect signs of vulnerability that might lead to future bouts of financial instability and of how to set prudential policy accordingly. And it discusses the evolution of capital adequacy standards and the new emphasis on liquidity standards in international regulation.

Abstract The growing popularity of home-sharing platforms such as Airbnb, partly fueled by hosts’ ability to evade local taxes and regulations, has been shown to elevate housing costs by reallocating long-term housing units to the short-term rental market. This study assesses whether enhanced tax enforcement can mitigate this trend. We analyze staggered tax collection agreements between Airbnb and Florida counties, wherein Airbnb collects taxes from the hosts directly. Using a difference-in-differences methodology, we find these agreements significantly slow the growth of housing costs, highlighting the importance of tax policy in addressing the sharing economy’s influence on housing affordability.

ABSTRACT This paper develops static hedges for several exotic options using standard options. The method relies on a relationship between European puts and calls with different strike prices. The analysis allows for constant volatility or for volatility smiles or frowns.