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📋 '''Lead-follow model''' is the market structure — most closely associated with [[Definition:Lloyd's of London | Lloyd's of London]] and the London subscription market — in which a single [[Definition:Lead underwriter | lead underwriter]] sets the terms, conditions, and pricing for an insurance or [[Definition:Reinsurance | reinsurance]] placement, and other [[Definition:Following underwriter | following underwriters]] then decide whether to subscribe to the risk on those same terms, each taking a percentage share of the total [[Definition:Insurance coverage | coverage]]. This co-insurance mechanism allows large or complex risks to be distributed across multiple carriers, with the lead's judgment serving as the anchor around which the placement is built.

⚙️ In practice, a [[Definition:Insurance broker | broker]] presents a risk submission to a prospective lead underwriter, who conducts a thorough assessment and, if willing to participate, quotes a [[Definition:Premium | premium]] rate and sets the [[Definition:Policy wording | policy wording]] and conditions. The lead typically takes the largest individual share — referred to as the lead line — signaling confidence in the risk and establishing the benchmark for others. The broker then circulates the signed slip or placing document to following markets, each of which reviews the lead's terms and decides whether to subscribe, and for what percentage. Following underwriters rely heavily on the lead's expertise, though they retain independent authority to accept or decline. This process is well-established not only in London but also in subscription markets in Bermuda, Singapore, and parts of Continental Europe, and it has been increasingly digitized through platforms such as [[Definition:PPL (Placing Platform Limited) | PPL]] and other electronic placement systems.

🔍 The model's strength lies in its ability to marshal capacity for risks too large or volatile for any single [[Definition:Insurance carrier | carrier]] — from multinational [[Definition:Property insurance | property]] programs to [[Definition:Excess of loss | excess-of-loss]] catastrophe layers. However, it also introduces a principal-agent dynamic: following underwriters may under-invest in their own analysis, relying excessively on the lead's judgment — a phenomenon sometimes called "following the leader" — which can contribute to systemic [[Definition:Underwriting | underwriting]] deterioration if the lead's standards slip. [[Definition:Lloyd's of London | Lloyd's]] and regulators have responded with requirements that following markets demonstrate independent oversight and that leads meet minimum standards of diligence. The lead-follow structure also shapes [[Definition:Claims management | claims handling]], as the lead underwriter typically takes the primary role in adjusting and settling claims on behalf of the subscribing panel, with agreements such as the [[Definition:Claims agreement party (CAP) | Claims Agreement Party]] protocol governing how following markets authorize settlements.

'''Related concepts:'''
{{Div col|colwidth=20em}}
* [[Definition:Lead underwriter]]
* [[Definition:Following underwriter]]
* [[Definition:Subscription market]]
* [[Definition:Lloyd's of London]]
* [[Definition:Slip]]
* [[Definition:Co-insurance]]
{{Div col end}}

Definition:Lead-follow model - Revision history

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