Business Groups: Panics, Runs, Organ Banks and Zombie Firms

2021 
Business groups often contain banks or near banks that can protect group firms from economic shocks. A group bank subordinate to other group firms can become an “organ bank” that selflessly bails out distressed group firms and anticipates a government bailout. A group bank subordinating other group firms can extend loans to suppress their risk-taking to default risk, preserving risk-averse low-productivity zombie firms. Actual business groups can fall between these polar cases. Subordinated group banks magnify risk-taking; subordinating banks suppress risk-taking; yet both distortions promote business group firms’ survival. Limiting intragroup income and risk shifting, severing banks from business groups, or dismantling business groups may mitigate both distortions; but also limits business groups’ internal markets, thought important where external markets work poorly.
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