Circuit breakers are a series of price fluctuation limits above and below a reference price, usually settlement, for certain CME Group products. Products Products with circuit breakers are divided into Primary and Associated contracts.
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Only a Primary contract can trigger a circuit breaker event. When When a Primary contract triggers a circuit breaker event, all Associated contracts will follow the behavior of the Primary contract. Primary Primary and Associated are defined in the GCC Price Fluctuation Limits spreadsheet.