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Lending, Affiliate, and Insider Banking Rules

Regulation O, U, and W terms used in insider lending, securities credit, and affiliate transaction rules.

Lending, affiliate, and insider banking rules are restrictions that govern certain bank loans, securities-credit arrangements, insider transactions, and affiliate exposures.

Use this branch when a rule affects who a bank may lend to, how much credit may be extended, what collateral or margin rules apply, or how transactions with insiders or affiliates are controlled.

Key Terms in This Branch

TermWhat it clarifies
Regulation OInsider lending restrictions and related bank governance concerns.
Regulation UBank credit secured by margin stock and related securities-credit limits.
Regulation WTransactions between a bank and its affiliates.

What to Verify

Identify the borrower, insider or affiliate relationship, bank entity, collateral, credit purpose, exposure amount, and rule date. These rules are technical and fact-specific; the page should orient the reader, not replace professional legal or compliance analysis.

Common Mistakes

  • Treating ordinary lending rules and insider-lending rules as the same issue.
  • Ignoring affiliate status or covered-transaction definitions.
  • Reading securities-credit rules without checking collateral and purpose.
  • Assuming a rule label alone tells whether a transaction is permitted.

In this section

Choose a subsection first. Deeper term pages live inside each subsection, which keeps large topic hubs readable.

Regulation O

Regulation O is a consumer-banking rule or disclosure concept used to protect customers and standardize financial information.

Regulation U

Regulation U is a consumer-banking rule or disclosure concept used to protect customers and standardize financial information.

Regulation W

Regulation W is a consumer-banking rule or disclosure concept used to protect customers and standardize financial information.

Revised on Sunday, June 21, 2026