Systemic risk.
In plain English
Systemic risk comes from connections rather than from any one bad asset: shared exposures, short-term funding that can vanish, and chains of obligations mean a shock at one institution can force selling across many others. Forced selling pushes prices down, which lowers the value of assets everyone else holds, which triggers more selling, a loop known as a fire sale. Common exposures matter as much as direct links, because firms holding the same assets fail together even if they never traded with each other. Regulators respond with capital buffers, liquidity rules, stress tests, and central clearing, all aimed at the connections rather than at any single firm. It is the reason bank supervision is not simply consumer protection.
01Why it matters
When this risk turns real, credit disappears for households and businesses that did nothing wrong, which is how a financial event becomes lost jobs and stalled home sales.
02The math, step by step
Say four lenders each hold $10 billion of the same asset class and each funds it with 30 day borrowing. If one is forced to sell at 90 cents, the other three must mark down $30 billion combined by 10 percent, or $3 billion, before anyone else has missed a payment.
Illustrative example. The amounts here are hypothetical, chosen to show how the math works, not real quoted rates or figures.
03What this is NOT
Systematic risk is market risk that diversification cannot remove, the fact that most stocks fall together in a downturn. Systemic risk is about contagion through the plumbing of the financial system. Similar words, different ideas, and mixing them up muddles both.
04Receipts
Every figure on this page is sourced to a primary document. Tap to open the original.
Plain-English answers from our glossary. Receipts included. Never advice.
Educational tool. Answers come only from ClearMoneySchool's published glossary and are not advice. Why we never give advice