How can one verify the validity of an ISIN?

You can register for free at the ISIN LookUp Tool to check ISIN status.

How frequently are CFI codes updated?

The ISO CFI standard is revised every 5 years. However, the Maintenance Agency upon the CFI Advisory Group’s decisions can update CFI table data elements based on market demand.

How does the currency code support financial transactions?

The ISO 4217 standard for currency codes provides clarity and precision in financial transactions, avoiding confusion and reducing errors.

Who maintains and updates the CFI codes?

SIX Financial Information Ltd as the Secretariat of the Maintenance Agency for CFI.

What is the process for obtaining an ISIN?

For CH ISINs, please refer to ISO 6166 . For other ISINs, contact the responsible NNA .

What are the benefits of using the standardized currency code?

ISO 4217 Currency ensures compatibility across systems and geographies, provides historical references, and minor unit info. It enables seamless global communication and compliant transactions.

How are ISINs assigned to financial and/or referential instruments?

Please refer to ISO 6166 and the ISIN Guidelines .

How often is the currency code updated?

Whenever a new currency needs to be added to list one or a currency needs to be amended or deleted from the respective lists two or three.

Global Financial Data Standards

SIX: Your Source for Financial Data Standards

Welcome to SIX, your trusted partner in financial data standardization. We are dedicated to driving global data standardization, ensuring that financial markets operate efficiently and meet regulatory requirements. In business and economics, accurate and up-to-date financial data standards are vital.

At SIX, we know this from our own experience, having worked with them for over 95 years. That's why we provide solutions that ensure accuracy, consistency, and compliance in all your operations, helping you make informed decisions, reduce risks, and achieve regulatory compliance effortlessly.

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Subscribe to the ISO 4217 Amendment Newsletter today and stay informed about important changes to currency codes.

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Our Services

Our services address various aspects of financial data standards, ensuring your transactions and records are accurate and comply with international regulations.

As the Secretariat of the Maintenance Agency for ISO 4217 (Currency codes) and ISO 10962 (CFI codes), we play a key role in maintaining and updating these standards.

Explore our comprehensive services to see how we simplify working with financial data for everyone.

As a member of ANNA, SIX acts as the National Numbering Agency for ISO 6166 ISIN assignment in Switzerland, Liechtenstein, and Belgium.

The following ISO standards are a broader family of ISO and available at SIX:

Financial Instrument Short Name (FISN – ISO 18774)
Market Identifier Codes (MIC – ISO 10383)
Entity Legal forms (ELF – ISO 20275)
Business Identifier Codes (BIC – ISO 9362)
Digital Token Identifier (DTI – ISO 24165)
Legal Entity Identifier (LEI – ISO 17442)

A maintenance agency may be appointed when:

A data standard requires frequent modification
A code list needs to be maintained

A registration authority can be designated when:

A standard requires the assignment of a unique identifier

ISO Standards at a Glance

ISO 4217 - Currency Codes ISO – 10962 CFI Code ISO – 6166 ISIN National Numbering Agency

We Maintain and Update the ISO Currency Codes

Currency Codes of the International Standard ISO 4217 are important in any information technology application related to trade, commerce and banking, as well as in the public sector.

At SIX, we continually update these codes to reflect all global economic and political changes. We maintain and update this code, ensuring that you always have access to the latest and most accurate data.

SIX is the official Maintenance Agency of these currency codes under ISO 4217 and as such the only recognized, authoritative source on currency code designations.

SIX provides these currency code service on behalf of the International Organization for Standardization (ISO) and its Swiss member SNV (Swiss Association for Standardization). We maintain the code lists, update them and make them available online and free of charge.

Contact Us for More Information

Current and Historical Lists:

Current Currency & Funds

Current Funds Codes

List Two: Fund Codes Registered with Agency

Historical (Currencies & Funds)

We Maintain and Update the CFI Code

The ISO 10962 Classification of Financial Instruments (CFI) is a globally recognized standard for describing all financial instruments, including traditional securities, derivatives, and innovative products.

The six-letter code describes the structure and function of each financial instrument in a consistent way. The code defines when a financial or referential instrument is issued and remains unchanged during its entire life. However, events such as the changing of voting rights or ownership restrictions decided at a stockholders' meeting can cause a CFI code to change.

As the maintenance agency for the CFI code, SIX manages updates and enhancements. We publish these updates in various formats like spreadsheets, CSV, JSON-LD, and TTL.

SIX CFI Code Look Up Service

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International Securities Identification Number

Get a Valor Number and/or ISIN Identifier from SIX

SIX is the official securities numbering agency in Switzerland, Liechtenstein, and Belgium. We issue Valor (Swiss National Number) and/or ISIN identifiers, which uniquely identify financial instruments across countries and asset classes. A Valor/ISIN can be used with an ISO Market Identifier Code (ISO 10383) and an ISO Currency Code (ISO 4217) to uniquely identify a financial instrument.

SIX is a founding member of the Association of National Numbering Agencies (ANNA) and co-operator of the ANNA Service Bureau.

If you are looking for other NNAs responsible for assigning ISINs, please check for the correct contact details here: ANNA Members

Need a new Swiss Security Number?

CONNEXOR® Numbering is your tool for reserving Swiss securities numbers and ISINs. This online service allows issuers to reserve NSINs and ISINs with automated feedback.

To use CONNEXOR® Numbering, sign a contract with SIX Financial Information Ltd to receive your username and password. Log in to procure securities numbers and ISINs anytime, anywhere. Choose to receive individual numbers or batches.

Required Documents for Valor and/or ISIN Reservation

Business/company incorporation documents
Prospectus, legal offering document, term sheets, contract specifications, etc.
Originating trading venue data for exchange traded options and futures
Index factsheets
Whitepaper for digital tokens
Offering memorandum
Share certificate
ISIN

Additional information may be requested as required by the NNA processing the request.

Access to CONNEXOR® Numbering Instrument Reservation Contact

ANNA is the Registration Authority Appointed by ISO for:

ISIN (ISO 6166)
FISN (ISO 18774)

National Numbering Agencies (NNAs)
The members of ANNA are National Numbering Agencies (NNAs). Their activity is to accept registration information directly from issuers and requestor/originator of new financial and/or referential instruments such as shares, bonds, indices, etc. and then to issue codes that uniquely identify these instruments.

ANNA Service Bureau (ASB)
The ANNA Service Bureau (ASB) as the central data hub has been collecting and enriching securities data from around the world since 2001. Daily, the national numbering agencies feed new ISINs, CFIs and FISNs - including issuer information, type of instrument, its terms, and countries where it will be traded as well - as updates to existing data to the ASB.

The ASB is globally operated by CGS and SIX together.

Award-winning

Best Reference Data Provider

ANNA wins ‘Best Reference Data Provider’ in the Waters Rankings 2024. SIX is a founding member of the Association of National Numbering Agencies (ANNA) and co-operator of the ANNA Service Bureau.

Awards Details

Best Standards Solution for Data Management

ANNA wins ‘Best Standards Solution for Data Management’ at the A-Team Data Management Insight Awards Europe 2023.

The ANNA Service Bureau (ASB), is operated jointly by CUSIP Global Services (CGS) and SIX, and is a central data hub enriching securities data from around the world.

Awards Details

Market Expertise and Standardization

Using standardized financial information helps global markets streamline processes, meet regulatory requirements, and improve data quality. It ensures consistency and transparency across markets and institutions.

SIX leverages its market expertise to promote efficient practices, beneficial regulations, and customer-focused services. We hold strategic roles in various committees.

SIX and SASFS

SIX is a member of the Swiss Association for SWIFT & Financial Standards (SASFS), uniting financial service providers in Switzerland and Liechtenstein to develop standardization and represent Switzerland internationally.

Global Role

As a member of the ASB (ANNA Service Bureau), SIX plays a crucial role in the global financial information ecosystem. We chair the ISO Reference Data Sub-Committee and the DSB (Derivative Service Bureau), driving best practices and innovation in financial data standards.

Derivatives Service Bureau (DSB)

The Derivatives Service Bureau (DSB) is a fully automated generator of International Securities Identification Numbers (ISINs) for OTC derivatives. The DSB is the first numbering agency designed to operate on a global basis and to meet the requirements of the derivatives markets.

SIX is a founding member of the DSB and holds a seat in the DSB Board. DSB has been appointed by FSB as UPI Service Provider. DSB has been appointed as the unique provider of UPI (ISO 4914).

At SIX, we are committed to improving the financial industry's infrastructure through our leadership in standardization and dedication to providing high-quality, reliable financial information.

What our clients say

Reviews and Testimonials About SIX

The ASB Operators, (CGS and SIX), efficiently deliver consolidated global ISIN data and worldwide support to ensure data quality. The cloud-based infrastructure offers a robust service with an excellent disaster recovery facility. CGS and SIX, being at the forefront of global financial data developments, proactively plan adjustments and enhancements of the database and our offering together with ANNA.

ANNA Service Bureau (ASB) Operators

Your Questions Answered

It is recognized world-wide by all operators and computer systems in the financial and banking industries. The six-letter code describes the structure and function of each financial instrument in a consistent way. The CFI is used by financial regulators in requisitioning and analyzing reporting data and to conduct transparency calculations to ensure safe and fair financial markets.

The CFI code provides the most comprehensive information possible whilst maintaining the manageability of the code. One of the essential rules of this CFI concept is that the classification is determined by the intrinsic characteristics of the respective financial instruments. This principle avoids confusion arising from different linguistic usage as well as redundancy, while allowing objective comparison of the instruments across all domestic markets. They standardize identification, are independent of local conventions, reduce redundancy, and enable objective cross-market comparisons.

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