Why ETFs are a source of systemic risk

ETFs can be a source of systemic risk because they can induce important feedback effects in markets, such as increased volatility in periods of market stress. However, these effects can be mitigated by regulators, according to a research paper by Maureen O’Hara (pictured) of Cornell University and assistent-professor Ayan Bhattacharya of the City University of New York.