CRE Concentration Meets HTM Overhang: A 121-Bank Compound-Exposure Cohort

The cohort clusters in community and lower-mid-tier institutions. Of the 121 members, 42 sit in the $500M–$2B band and 37 in the $2B–$10B band, together accounting for roughly two-thirds of membership. Fifteen institutions are in the $10B–$50B band, one exceeds $50B, and 26 sit below $500M. Geographic concentration is meaningful but not extreme: California (13), Texas (9), Florida (7), Illinois (6), and New Jersey (5) together contribute 33.1% of the cohort, tracking population and CRE-market density rather than pointing to a single regional shock.

The CRE-to-risk-based-capital distribution is tightly bunched at elevated levels — median 376.5%, interquartile range 331.7% to 414.9%, with a maximum of 629.4%. Every member is materially above the 300% predicate; this is not a cohort of marginal cases. Top members by CRE-to-RBC include First Commerce Bank, New Jersey (CERT 58054) at 629.4% with HTM at 72.2% of Tier 1; Habib American Bank, New York (CERT 25093) at 578.8% with HTM at 81.1%; and First Utah Bank, Utah (CERT 22738) at 517.5% with HTM at 83.4%. Larger names in the cohort include OceanFirst Bank, N.A. (CERT 28359) at $14.5B in assets and Shore United Bank, N.A. (CERT 4832) at $6.3B.

The v0.1 precedent corpus does not contain matched case studies for this compound-exposure profile, and inflating weak analogs would misrepresent the analytical basis. The cohort was originally surfaced in Klaros commentary in March 2024, when a comparable intersection of high CRE concentration and rate-sensitive securities exposure was identified across roughly 282 banks; the present 121-bank count is a Layer 1 reconstruction using HTM-to-Tier-1 as the closest available proxy for the mark-to-market gap embedded in AOCI-neutral securities holdings. The methodological substitution is material — HTM concentration captures the accounting structure through which unrealized losses are held off regulatory capital, but not their magnitude — and the smaller count reflects both the proxy shift and eighteen months of balance-sheet evolution. Pattern matching against named historical failures is not attempted here. The mechanism analysis below carries the analytical weight for this cohort.

The structural exposure works as follows. A bank with CRE at 376% of risk-based capital — the cohort median — is well above the 300% supervisory heightened-scrutiny threshold articulated in the 2006 Interagency Guidance on Concentrations in Commercial Real Estate Lending, Sound Risk Management Practices, and Prompt Corrective Action. That threshold is not itself a violation; it is a trigger for enhanced risk management expectations, stress testing, and examiner attention to underwriting, portfolio management, and capital adequacy relative to concentration. Standing alone, elevated CRE concentration is common in community banking and manageable with disciplined underwriting.

The compound exposure emerges when the same institution also holds HTM securities above 50% of Tier 1. HTM classification permits amortized-cost accounting: unrealized losses on the securities book do not flow through AOCI into regulatory capital for most non-advanced-approaches banks. This produces a well-understood gap between reported Tier 1 and the economic value of capital under a mark-to-market view. In a persistent or rising-rate environment, that gap widens; if liquidity stress forces reclassification or sale from HTM, the loss crystallizes into capital immediately, and the concentration constraint on the CRE book becomes binding at a lower effective capital base.

This is the mechanism that made the March 2023 regional bank episode instructive for supervisors: the interaction between deposit-funded securities books carrying embedded losses and asset-side concentrations that limit balance-sheet flexibility. The 121 institutions in this cohort share that structural signature. Interest rate risk in the banking book — the CAMELS S component and the supervisory framework articulated in the 2010 Interagency Advisory on Interest Rate Risk Management — is the direct regulatory frame. The CRE concentration determines how much room exists to absorb the securities-side outcome.

Three action arcs for Klaros on this cohort.

1. Engagement positioning. The cohort provides a defensible client-development frame for institutions in the $500M–$10B bands, where 79 of 121 members sit. The advisory conversation is not about individual bank distress — most members are well-capitalized on reported metrics — but about the interaction between CRE concentration policy, securities portfolio classification decisions, and contingency funding assumptions. Klaros can lead with the compound-exposure mapping and the supervisory framework, not with a distress narrative.

2. Examination preparation. For cohort members entering safety-and-soundness examinations, the 2006 CRE Interagency Guidance and the 2010 Interest Rate Risk Advisory are the two documents examiners will work from. Klaros engagements should anticipate examiner questions on the interaction: stress scenarios that hold rates elevated while CRE credit migrates, HTM-to-AFS reclassification triggers and their capital consequences, and the contingency funding plan's treatment of the securities book. Preparation materials should address the compound exposure explicitly rather than treating CRE and IRRBB as separate workstreams.

3. Cohort tracking. The 2025Q4 count of 121 should be recomputed each quarter and compared to the March 2024 reference point of approximately 282. Movement in the count — driven by CRE runoff, HTM maturity, or Tier 1 build — is a leading indicator of how the sector is metabolizing the 2022–2023 rate shock. Klaros should treat this cohort as a standing sector-surveillance list rather than a one-time screen.