This research attempts to show that risk sharing, as defined under Islamic finance, makes financial systems antifragile. The recent financial crisis has given rise to discussions around a new term known as antifragility, used for evaluating the long-term stability of a financial system. Antifragility specifies conditions under which systems become resilient to shocks caused by Black Swans. These are highly unpredictable outlier events that have a major negative (or positive) consequence when they occur, with their occurence only being explained retrospectively. According to this concept, the long-term survivability of any system centers exclusively on its antifragile nature, that is, its ability to absorb and actually benefit from Black Swan-type shocks. This research aims to investigate risk sharing Islamic finance, qualitatively (via literature-based research) and quantitatively (via mathematical modeling), as an antifragile system ...