Quantify the systemic fragility embedded in modern financial networks, assess the concentration of counterparty risk among Too-Big-To-Fail institutions, and evaluate the adequacy of current regulatory frameworks (Basel III, Dodd-Frank) for preventing financial cascade failures.

Network analysis of interbank lending using BIS locational banking data and Fed Reserve balance sheet connections. Contagion modeling using agent-based simulations calibrated to 2008 crisis and COVID-19 credit event patterns. Stress-testing framework applied to major global systemically important banks (GSIBs).

The 8 largest US banks hold 40% of all commercial bank assets and are interconnected through $15+ trillion in derivative positions. A 10% asset shock to any of the top 3 banks would trigger knock-on losses exceeding $500B across the financial system.

The COVID-19 crisis revealed that despite post-2008 reforms, the system remains vulnerable to sudden liquidity hoarding: in March 2020, financial stress indicators exceeded peak 2008 levels in some measures.

The repo market — a $5 trillion daily funding market that underpins short-term liquidity — operates with minimal transparency and no circuit breakers until stress becomes acute. Regulatory capital requirements have improved, but interconnectedness has increased faster than capital buffers.