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ANSI X9.6‑2020: Uniform Security Identification Procedures

Diagram showing the structure of a CUSIP number and its role in security identification, trading, and settlement under the ANSI X9.6-2020 standard.

Over 1.1 million outstanding bond issues are identified by CUSIP numbers at any given time, underscoring the depth and breadth of debt issuance in North America—spanning national and local governments, corporations, and government agencies. Most of these issues are municipal bonds; there are over 1.5 million unique municipal CUSIPs issued by more than 50,000 entities.  This immense volume highlights the critical role of ANSI X9.6-2020: Financial Services – Committee on Uniform Security Identification Procedures Securities Identification CUSIP, which provides specifications for uniquely identifying an eligible issue.

What Is ANSI X9.6-2020?

ANSI X9.6-2020 details specifications for the unique identification of eligible securities and serves as the standard format used in communications among financial system users and for information exchange. The American National Standard defines the structure and meaning of CUSIP numbers, assuring that every portion of the code (issuer and issue components) is standardized and uniformly interpreted.

The goal of ANSI X9.6-2020 is to facilitate accurate and efficient communication and data processing in financial transaction by serving as the common denominator in communications among users for completion of transactions and exchange of information.

What Is a CUSIP?

CUSIP stands for Committee on Uniform Security Identification Procedures and serves as the National Securities Identification Number (NSIN) for the U.S. and Canada. Simply put, it is the universally recognized 9-character identifier for financial instruments and their issuers and borrowers. 

This number identifies most financial instruments, including: stocks of companies, commercial paper, and government and municipal bonds. CUSIPs today are mainly used in computerized trading record-keeping systems for trades and shareholder records.

Why CUSIPs are Crucial for Trading, Settlement & Market Integrity

CUSIPS are important because their unique, standardized nine-character identifiers for North American securities not only facilitates efficient trading but also:

Importance of CUSIP Codes and ANSI X9.6-2020

CUSIP codes and ANSI X9.6-2020 play a critical role in the financial world by:

ANSI X9.6-2020: The Standard Powering Reliable Bond Identification, Clearing & Settlement

By establishing a standardized, universal identifier for each bond—complete with issuer, issue, and check‑digit components—ANSI X9.6-2020 assures accurate, scalable identification across the entire securities lifecycle. Without ANSI X9.6-2020 rigorous format and governance, managing clearing, settlement, record‑keeping, and regulatory reporting across such a vast number of distinct securities would be chaotic and inefficient.

Where to Find ANSI X9.6-2020

ANSI X9.6-2020: Financial Services – Committee on Uniform Security Identification Procedures Securities Identification CUSIP is available on the ANSI Webstore.

ANSI X9.6-2020 is developed by the Accredited Standards Committee X9 Inc. (X9).

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