Rule

1.

An individual law or regulation, or a broader principle underpinning a number of laws or regulations.

For example, the best execution rule.

2.

A less formal understanding between individuals or organisations, not necessarily legally enforceable.

For example, the Chatham House Rule.

3.

Guidance for individual or internal organisational activity.

For example, the filter rule for traders applying technical analysis principles.

See also

• Anti-avoidance rule = anti-avoidance provision
• Best execution rule
• Chatham House Rule
• Filter rule
• Liikanen rule
• Loss-sharing rule
• Overall Liquidity Adequacy Rule (OLAR)
• Rule 144A
• Rule 2a-7
• Uncleared Margin Rule (UMR)