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Aggregate Stop Loss Reinsurance

A form of aggregate excess of loss reinsurance which indemnifies the reinsured against the amount by which the reinsured's aggregate losses incurred during a specific period exceed either an agreed amount or an agreed percentage of some other business measure, such as aggregate net premiums over the same period.  This form of reinsurance is also known as stop-loss reinsurance, stop-loss-ratio reinsurance, or excess of loss ratio reinsurance.