Insurance Retention Battle: Mercer Sues Chubb Over ‘Related Claims’

A significant legal battle is unfolding as Mercer Global Advisors initiates a lawsuit against Chubb, specifically Federal Insurance Company, challenging the insurer’s classification of what constitutes “Related Claims.” This dispute centers on a substantial $1 million self-insured retention, and its resolution carries broad implications for professional liability insurance policyholders across the financial sector.

Denver-based Mercer, an SEC-registered investment adviser, filed its complaint in Colorado federal court on July 22, 2026. The core of the complaint alleges that Chubb wrongly re-categorized multiple claims, thereby obligating Mercer to satisfy a second, potentially unwarranted, retention threshold. How often do policyholders find themselves at odds with their insurers over such interpretative nuances?

The Policy’s Crucial “Related Claims” Definition

At the heart of the litigation lies Mercer’s Asset Management Protector policy, which features a $5 million aggregate limit and a $1 million self-insured retention for its professional liability coverage. A critical stipulation within this policy dictates that “Related Claims” are to be treated as a single claim, ensuring that only one retention applies. This provision is designed to prevent multiple retentions from being triggered by interconnected events.

The policy broadly defines “Related Claims” as those “based upon, arising from, directly or indirectly resulting from, in consequence of, or in any way involving the same or related facts, circumstances, situations, transactions or events.” This expansive language is paramount because, under the policy’s terms, defense costs are not additional to the limits of liability but rather applied directly against the applicable retention. Each additional retention effectively translates to more capital a firm must expend before its insurance coverage activates.

The implications of this definition extend beyond the immediate financial burden. They highlight the intricate dance between policy language and its practical application during claims processing. Can insurers unilaterally redefine terms after an initial agreement, or should a consistent interpretation prevail throughout the claims lifecycle?

“The core function of professional liability insurance is to provide a safety net, but that net’s efficacy is critically undermined when the definition of its weave becomes a moving target during a claim.”

Tracing the Underlying Disputes and Chubb’s Alleged Reversal

The genesis of this dispute dates back to December 2021, when Mercer acquired assets from another advisory firm. Subsequently, two former clients of that acquired firm initiated arbitration claims through the Financial Industry Regulatory Authority (FINRA). These claims form the factual basis upon which the “Related Claims” debate hinges.

The first arbitration claim alleged that, prior to the acquisition, her adviser at the acquired firm “inappropriately recommended that she invest substantial funds into a high-risk, options-based hedge fund” which the adviser himself had “created and managed.” Approximately seven months later, a second client, suing individually and on behalf of her husband’s estate, filed a “substantially similar” claim. A related subpoena then followed in late 2024, further complicating the scenario. Mercer has consistently denied these allegations, asserting that they were not based on advice it provided directly.

Initially, Chubb had reportedly agreed that the two arbitration claims were indeed related, a position confirmed in letters sent in April 2024. However, the situation dramatically shifted in August 2024, when Chubb allegedly reversed its stance, separating the second client’s claim and applying a second $1 million retention. Furthermore, the complaint details that Chubb initially treated the subpoena as a distinct third claim with its own retention, before ultimately agreeing in June 2025 to group the subpoena with the first arbitration. The insurer has, however, steadfastly refused to treat the second client’s claim as related to the others, forcing Mercer to pay a second retention exceeding $1 million.

Mercer’s Legal Recourse and Industry Implications

In response to Chubb’s alleged actions, Mercer Global Advisors has pursued a comprehensive legal strategy. The lawsuit brings forth several critical claims against Federal Insurance Company. These include:

• Breach of contract
• Common-law bad faith
• Statutory unreasonable delay or denial under Colorado law

Mercer is asking the court to formally declare all the matters as “Related Claims.” Beyond this declaration, the firm seeks reimbursement of over $1 million, up to two times the covered benefits under Colorado’s insurance statute, along with attorneys’ fees and interest. The allegations highlight a crucial point for claims professionals: whether separate incidents share sufficient common ground to be consolidated under a single retention. The complaint specifically contends that Chubb’s reversal, executed “without adequate explanation or new facts justifying such reversal,” demonstrates a position lacking a reasonable basis.

This case serves as a poignant reminder that while policy language may appear definitive, its interpretation can become a battleground. For financial services firms, this dispute underscores the persistent challenge of navigating complex insurance contracts and the potential for prolonged litigation even when initial agreements seem clear. What recourse do companies have when an insurer’s interpretation shifts mid-process?

What Should You Do About Insurance Claim Disputes?

The ongoing legal conflict between Mercer Global Advisors and Chubb offers valuable lessons for any entity holding professional liability insurance. First and foremost, meticulously review and understand the definitions within your policy, especially concerning “Related Claims,” retentions, and aggregate limits. A proactive approach to policy comprehension can mitigate future disagreements.

Maintaining thorough documentation of all communications with your insurer is also paramount. This includes letters, emails, and detailed notes from phone calls, particularly concerning initial claim assessments and any subsequent changes in the insurer’s position. Any reversal in an insurer’s stance should prompt an immediate and detailed request for justification, documented in writing. Furthermore, consider engaging experienced legal counsel specializing in insurance law at the earliest sign of a dispute over claim classification or retention application. Such experts can provide clarity on your rights and obligations under state insurance statutes, like Colorado’s provisions for unreasonable delay or denial. Ensuring clarity and consistency in insurer-policyholder relations is not merely desirable, but essential for maintaining trust and operational stability.

Insurance Claim Dispute Analysis – Disclaimer

The information provided in this piece concerning insurance disputes and legal actions is for informational purposes only and does not constitute legal or financial advice. Outcomes in legal cases can vary significantly based on specific facts and jurisdictional laws. Readers facing similar insurance claim disputes should consult with a qualified legal professional or financial advisor to discuss their individual circumstances and obtain tailored guidance.