# Shadow Banking
**Shadow banking** (the politer term is *non-bank financial intermediation*) is the universe of institutions that perform bank-like functions — lending, maturity transformation, credit creation — without being banks and therefore without bank-level supervision, deposit insurance, or guaranteed access to the [[Federal Reserve]]'s emergency lending. It includes money-market funds, hedge funds, private-equity and private-credit firms, mortgage originators, broker-dealers, securitization vehicles, and insurers. The defining feature is regulatory: these firms do what [[The Banking System]] does, but outside the regulatory perimeter that the [[2008 Financial Crisis]] was supposed to fix.
Shadow banking was at the dead center of 2008. The crisis ran not through ordinary deposit-taking banks but through this parallel system — investment banks like Lehman, off-balance-sheet vehicles stuffed with subprime mortgages, money-market funds that "broke the buck," and AIG's unregulated derivatives. The mechanism was a **run on the shadow banks**: short-term funding (repo) evaporated for institutions that, unlike insured banks, had no deposit guarantee to stop the panic. The [[Dodd-Frank Act]] pulled some of this into the light (swaps to the [[CFTC]], systemic designations), but much of the perimeter remains thin.
For the KB, shadow banking matters because it is **where finance migrates when banks are regulated**. Every tightening of [[Financial Regulation]] on banks pushes activity into the less-regulated shadow sector — a structural reason crises recur in whatever corner is darkest. The sector has since exploded into **private credit and [[Private Equity]]**, now multi-trillion-dollar industries that lend, own hospitals and housing, and load companies with debt largely beyond public disclosure — the institutional core of contemporary [[Financialization]]. Crypto adds a new shadow layer: [[Stablecoin]] issuers function as unregulated money-market funds, and crypto lenders re-create bank runs (Celsius, FTX) without any of the guardrails. The recurring KB through-line is the asymmetry of the public backstop — when shadow institutions grow large enough, their failures still land on the public via [[Too Big to Fail]], even though they were never supervised as banks.
## See Also
- [[The Banking System]]
- [[Capital Markets]]
- [[Financial Regulation]]
- [[Private Equity]]
- [[Financialization]]
- [[Financial System Hub]]