systemic risk

In finance, systemic risk describes the likelihood of the collapse of a financial system, such as a general stock market crash or a joint breakdown of the banking system. As such, it is a type of "aggregate risk" as opposed to "idiosyncratic risk", which is specific to individual stocks or banks. Systemic risk should also be carefully distinguished from Non-systemic risk, which describes risks which the whole economy faces such as business cycles or wars.
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The risk that the failure of one participant in a transfer system, or in financial markets generally, to meet its required obligations will cause other participants or financial institutions to be unable to meet their obligations (including settlement obligations in a transfer system) when due. Such a failure may cause significant liquidity or credit problems and, as a result, might threaten the stability of financial markets.