As prudential regulations for traditional commercial banks have tightened, a significant share of global credit activities has shifted outside the regulated banking system into the Shadow Banking Sector, also known as Non-Bank Financial Intermediation (NBFI).

The shadow banking perimeter includes investment funds, money market funds, hedge funds, and special purpose investment vehicles that engage in liquidity and maturity transformation without direct access to central bank emergency liquidity facilities:

[Retail / Corporate Saver] <--- Deposits Cash Capital ---> [Money Market Fund Pool] ---> Purchases Commercial Paper ---> [Corporate Enterprise Asset]

Because these entities function as key credit providers but lack permanent regulatory backstops, they are highly vulnerable to sudden runs, requiring financial stability teams to monitor shadow banking networks to prevent non-bank failures from spilling over into the primary banking system.