Learn More about CUSIP Permanence

CGS has received industry feedback in connection with a Request for Comments to a change in CUSIP assignment procedures.

CUSIP Permanence is an update to assignment procedures, in which the CUSIP identifier will remain the same for corporate and mutual fund name changes even when there is a significant impact on the alpha-numeric sequencing within the CUSIP system. This update will go into effect on October 1, 2021.

Below is a link to some frequently asked questions about CUSIP Permanence from market participants. Please send us an email if you have any other questions.

Access the FAQ

An identifier for every market

CUSIP

CGS provides a 9-character standard CUSIP identifier for issuers and their financial instruments offered in the U.S. and Canada

An identifier for every market

CINS

CGS provides a 9-character standard CGS CINS identifier for more than 30 non-North American countries and their financial instruments

An identifier for every market

ISIN

CGS is responsible for the assignment of ISINs in the U.S. and other areas where designated

An identifier for every market

LEI

The Legal Entity Identifier (LEI) is a 20-character, alphanumeric based on the ISO 17442 standard developed by the International Organization for Standardization (ISO)

An identifier for every market

CEI

The CUSIP Entity Identifier (CEI) is a 10-character code designed to uniquely identify legal entities in the syndicated loan market.

An identifier for every market

CUSIP

CGS provides a 9-character standard CUSIP identifier for issuers and their financial instruments offered in the U.S. and Canada

An identifier for every market

CINS

CGS provides a 9-character standard CGS CINS identifier for more than 30 non-North American countries and their financial instruments

An identifier for every market

ISIN

CGS is responsible for the assignment of ISINs in the U.S. and other areas where designated

An identifier for every market

LEI

The Legal Entity Identifier (LEI) is a 20-character, alphanumeric based on the ISO 17442 standard developed by the International Organization for Standardization (ISO)

An identifier for every market

CEI

The CUSIP Entity Identifier (CEI) is a 10-character code designed to uniquely identify legal entities in the syndicated loan market.


Global coverage.
Local expertise.

From the assignment of identifiers for new issues to their use in trading, settlement, asset servicing and risk management, clients rely on trusted CUSIP identifiers and the knowledge and experience of the CGS team to provide a solid foundation to run their businesses smoothly.

Brain Network

Our knowledge is
your power

More than just identifiers, CGS commercial databases contain 65+ different data elements relating to tens of millions of financial instruments (depending on asset class), plus event- driven corporate actions such as name changes, mergers, acquisitions and reverse splits. Our extensive coverage includes corporate, government, municipal, and international securities; IPOs; preferred stock; funds; CDs; derivatives; US and Canadian listed options and syndicated loans, with new financial instruments and geographic regions continually added.

CUSIP Global Services and American Bankers Association Issue Statement on FactSet Acquisition of CGS

CUSIP Global Services and the American Bankers Association welcomed the announcement that FactSet has reached a definitive agreement to acquire CUSIP Global Services from S&P Global. The transaction means that FactSet would become just the second operator to manage the CUSIP system on behalf of the ABA.Read the complete statement for more information.

Issuance Trends

  • Norwalk, CT
    May 17, 2023

    Request volumes for new corporate and municipal identifiers slowed in April.

  • Norwalk, CT
    April 13, 2023

    Request volumes for new corporate and municipal identifiers rose in March.

  • Norwalk, CT
    March 14, 2023

    Request volumes for new corporate identifiers saw a second straight month of gains in February, led by corporate bond issuers.