https://www.insurerbrain.com/w/index.php?action=history&feed=atom&title=Definition%3AAdverse_development_cover_%28ADC%29Definition:Adverse development cover (ADC) - Revision history2026-05-03T23:07:42ZRevision history for this page on the wikiMediaWiki 1.43.8https://www.insurerbrain.com/w/index.php?title=Definition:Adverse_development_cover_(ADC)&diff=7219&oldid=prevPlumBot: Bot: Creating new article from JSON2026-03-10T12:40:54Z<p>Bot: Creating new article from JSON</p>
<p><b>New page</b></p><div>🛡️ '''Adverse development cover (ADC)''' is a [[Definition:Reinsurance | reinsurance]] contract that protects an [[Definition:Insurance carrier | insurer]] against the possibility that its existing [[Definition:Loss reserve | loss reserves]] for claims already incurred will prove insufficient over time. Unlike traditional reinsurance that covers future losses, an ADC specifically addresses [[Definition:Reserve | reserves]] that have already been established — stepping in when actual claim payments exceed the level the insurer originally anticipated. It is a form of [[Definition:Retroactive reinsurance | retroactive reinsurance]], meaning it covers liabilities from events that have already occurred but whose ultimate cost remains uncertain.<br />
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⚙️ Under a typical ADC arrangement, the [[Definition:Cedent | ceding insurer]] selects a specific block of business or [[Definition:Accident year | accident year]] and sets an attachment point — a dollar threshold above its carried reserves. If cumulative claim payments on that portfolio breach the attachment point, the [[Definition:Reinsurer | reinsurer]] begins reimbursing the cedent up to a predetermined limit. The [[Definition:Premium | premium]] for this protection reflects the reinsurer's assessment of how likely and how severely reserves may deteriorate, informed by [[Definition:Actuarial analysis | actuarial analysis]] and independent [[Definition:Reserve study | reserve studies]]. The contract may also include provisions governing how [[Definition:Claims management | claims]] are administered and reported during the coverage period.<br />
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📊 ADCs play a critical role in stabilizing an insurer's financial position, particularly during [[Definition:Mergers and acquisitions (M&A) | mergers and acquisitions]], corporate restructurings, or when an insurer is exiting a [[Definition:Line of business | line of business]] with long-tail [[Definition:Liability insurance | liability]] exposure. By capping downside reserve risk, the cover gives management, investors, and [[Definition:Insurance regulator | regulators]] greater confidence in the company's balance sheet. For acquirers purchasing a book of business, an ADC can make a transaction viable by ring-fencing legacy uncertainty. Rating agencies also view well-structured ADCs favorably, as they reduce [[Definition:Earnings volatility | earnings volatility]] and demonstrate prudent [[Definition:Risk management | risk management]].<br />
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'''Related concepts'''<br />
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* [[Definition:Loss portfolio transfer (LPT)]]<br />
* [[Definition:Retroactive reinsurance]]<br />
* [[Definition:Loss reserve]]<br />
* [[Definition:Run-off]]<br />
* [[Definition:Incurred but not reported (IBNR)]]<br />
* [[Definition:Reserve redundancy]]<br />
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