A systemically important financial institution (SIFI) is a bank, insurance, or other financial institution that U.S. federal regulators determine would pose a serious risk to the economy if it were to collapse. Currently, these are defined as banking institutions that have more than $250 billion in total consolidated assets or more than $10 billion in on-balance sheet foreign exposure. They are required to maintain a 100% LCR, which means holding an amount of highly liquid assets that are equal or greater than its net cash flow, over a 30-day stress period.