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Concept17a-4

SEC Rule 17a-4

A regulation issued by the U.S. Securities and Exchange Commission (SEC) requiring broker-dealers and exchanges to retain tamper-proof electronic records and audit trails. It is a key regulatory basis for the immutability of financial data.

Timeline (last 90 days)

Oct 16

Regulatory rules such as SEC Rule 17a-4 require financial institutions to maintain immutable audit trails.

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Sep 24

U.S. SEC Rule 17a-4 requires broker-dealers to store electronic records in a tamper-proof manner.

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Sep 18

Regulations such as MiFID II (Markets in Financial Instruments Directive) and SEC Rule 17a-4 explicitly require institutions to be able to reconstruct the complete record chain of trading decisions.

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