Who watches the watchers

Founded in 1694 to fund a war against France, the Bank of England is the model from which most modern central banks evolved. Independent since 1997, its Monetary Policy Committee sets UK interest rates with a 2% CPI inflation target. The Bank houses the Prudential Regulation Authority (UK bank supervisor) and the Financial Policy Committee (macroprudential). Its 18th and 19th-century role financing the British Empire makes it a useful lens on the historical origins of modern central banking.

Japan's central bank, founded in 1882 during the Meiji modernization. Headquartered in Tokyo, the BoJ has been at the global frontier of unconventional monetary policy: zero interest rates from the late 1990s, quantitative easing from 2001 (a decade before the Fed), yield curve control from 2016, and negative policy rates from 2016 to 2024. Its decades-long struggle with deflation and recent transition back to normalization make it the most-watched case study in monetary policy at the zero lower bound.

Created by the Federal Reserve Act of 1913 in response to the 1907 banking panic, "the Fed" is the central bank of the United States. Its three legal mandates — maximum employment, stable prices, and moderate long-term interest rates — are pursued through the Federal Open Market Committee. The system has a deliberately unusual structure (a Washington-based Board of Governors plus 12 regional Reserve Banks owned by member banks) that reflects a 1913 political compromise between centralizers and states-rights advocates. The world's most-watched monetary authority.

Created by the Securities Exchange Act of 1934 in the wake of the 1929 crash, the SEC enforces the federal securities laws and oversees public-company disclosure, securities exchanges, broker-dealers, and investment advisers. The agency's EDGAR database makes every public-company 10-K, 10-Q, and 8-K freely available — one of the most generous government-data resources in the world. The SEC's mandate (investor protection, orderly markets, capital formation) is a useful lens on the tradeoffs in any securities regime.

Established in 1998 with the launch of the euro and headquartered in Frankfurt, the ECB conducts monetary policy for the eurozone — currently 20 EU member states sharing a common currency. Its single mandate (price stability, defined as 2% medium-term inflation) is narrower than the Fed's dual mandate, reflecting Bundesbank-style monetary discipline embedded in the Maastricht Treaty. The ECB also supervises significant eurozone banks through the Single Supervisory Mechanism since 2014. Together with national central banks it forms the Eurosystem.

The Bundesanstalt für Finanzdienstleistungsaufsicht is Germany's integrated financial regulator, supervising banks, insurance, pension funds, and securities markets. Established in 2002 by merging three predecessor agencies, BaFin works closely with the Bundesbank on bank supervision and with the ECB's Single Supervisory Mechanism for the largest German banks. Its reputation was significantly damaged by the 2020 Wirecard scandal, in which a DAX-listed payments company collapsed after revealing €1.9 billion in non-existent assets — a case study in supervisory failure.

France's securities regulator, created in 2003 by merging predecessor agencies. The AMF oversees Paris-listed companies (Euronext Paris), investment-services firms, asset managers, market infrastructure, and collective-investment vehicles. It works closely with the ACPR (the French prudential regulator under the Banque de France) under a twin-peaks-style division of responsibilities. Within the EU framework, much of the AMF's rulebook implements directives and regulations developed by ESMA, the European securities regulator.

The UK regulator for financial-services firms and markets, established in 2013 as the successor to the Financial Services Authority following the post-2008 reorganization of UK financial supervision. Operates alongside the Bank of England's Prudential Regulation Authority — the FCA focuses on market conduct, consumer protection, and competition, while the PRA handles prudential supervision of banks and insurers. The "twin peaks" structure (conduct + prudential split) is widely studied as an alternative to integrated regulation.