Internal Capital Markets and Macroprudential Policy Lessons from the 2007–2009 Crisis

Key findings from this study

• The study found that bank holding companies channeled capital disproportionately toward stronger subsidiaries while restricting support to weaker ones during the 2007–2009 crisis.
• The researchers demonstrate that profitable parent firms became increasingly selective in capital allocation under stress conditions, contradicting regulatory assumptions of reliable support.
• The authors report that nonbank subsidiaries functioned as critical internal liquidity providers when external capital markets froze, playing previously underappreciated roles in conglomerate funding dynamics.

Overview

This research examines internal capital allocation within bank holding companies during the 2007–2009 financial crisis, testing whether parent firms reliably support distressed subsidiaries as financial regulation assumes. Using novel measures of sibling distress and granular funding flow data, the study reveals that capital allocation was selective rather than reliable, with stronger affiliates receiving disproportionate support.

Methods and approach

The researchers constructed novel measures of sibling distress alongside detailed parent-affiliate funding flow data. They analyzed internal capital reallocation patterns across bank holding company conglomerates during the 2007–2009 crisis period, examining how parental support varied based on affiliate strength and stress conditions.

Results

Capital flowed disproportionately toward more liquid and resilient subsidiaries while distressed units faced restricted support. Profitable parents became increasingly selective in allocating capital under stress conditions. Nonbank subsidiaries emerged as critical internal liquidity providers when external capital markets froze. These patterns demonstrate that intra-group capital allocation mechanisms amplified systemic stress rather than mitigating it, creating a gap between regulatory assumptions and actual behavior.

Implications

The findings establish that parent firm strength alone provides insufficient regulatory protection during crises. Current supervisory frameworks fail to account for the selective nature of internal capital support, potentially overestimating systemic resilience in large conglomerates. Regulatory doctrine assumes reliable parental support, yet evidence shows this assumption breaks down precisely when it matters most for financial stability.

Effective crisis prevention requires fundamentally revised supervisory approaches. Regulators must monitor sibling fragility patterns across banking conglomerates and assess potential contagion through internal capital channels. Stress testing frameworks should incorporate realistic assumptions about intra-group funding availability rather than presuming automatic support flows. The liquidity roles played by nonbank affiliates warrant explicit supervisory attention given their importance during external market freezes.

The selective reallocation patterns observed suggest that internal capital markets can function as mechanisms for propagating stress rather than absorbing it. Supervisory frameworks designed around reliable parental support may inadvertently increase systemic vulnerability by masking concentration of stress within weaker affiliates. Enhanced monitoring of intra-group capital flows and affiliate-level fragility metrics represents a necessary complement to traditional consolidated prudential metrics.

Scope and limitations

This summary is based on the study abstract and available metadata. It does not include a full analysis of the complete paper, supplementary materials, or underlying datasets unless explicitly stated. Findings should be interpreted in the context of the original publication.