Global Financial Data Standards | SIX

Global Financial Data Standards | SIX
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.
Never Miss an Update – Newsletter
Subscribe to following Newsletter for:
- ISO 4217 Currency codes
- ISO 10962 CFI codes
Stay informed about important changes to Currency codes and CFI 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
The Roles from SIX at ISO, SASFS, ANNA (ASB & DSB)
SIX plays a pivotal role in the development and implementation of ISO Financial Standards, ensuring the smooth functioning and standardization of financial markets. Download the factsheet to find out more.
Download Factsheet
ISO Standards at a Glance
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
List One (XLS)
List One (XML)
Current Funds Codes
List Two: Fund Codes Registered with Agency
Historical (Currencies & Funds)
List Three (XLS)
List Three (XML)
Amendments
”Effective from 1st of January 2026, the following change will be made to “List One: Current Currency & Funds”:
Entity
Currency
Alphabetic Code
Numeric Code
Minor Unit
Bulgaria
Euro
EUR
978
The Council of the European Union formally approved the accession of Bulgaria to the euro area on 1 January 2026. The exchange rate is fixed at EUR 1 = BGN 1.95583 Bulgarian Lev (BGN) and Euro (EUR) will be used during the parallel circulation period from 01.01.2026 to 31.01.2026 inclusive. The period of mandatory dual price display lasts from 08.08.2025 to 08.08.2026. As of 01.01.2026, Bulgarian Lev should be listed as the old/historic currency of Bulgaria.
”Effective from 01.01.2026, the following change will be made to “List Three: Historical (Currencies & Funds)”:
Entity
Currency
Alphabetic Code
Numeric Code
Minor Unit
Bulgaria
Bulgarian Lev
BGN
975
Changes to the currency codes lists occur if a currency is created, withdrawn or parts thereof altered.
All Past Amendments
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
CFI Contact Form
Use this form only to:
1. Propose a new element for inclusion in the CFI ISO Standard (such as a Category, Group, Attribute, or definition);
2. Request a revision to an existing element within the standard.
3. Recommend the removal of a Category, Group, Attribute, or related definition.
For further information please refer to the
Maintenance Agency Guidelines
Please do not submit ISINs solely to question a CFI code assignment. These types of inquiries will not be reviewed or processed through this form.
Contact Us for More Information
Maintenance Agency Guidelines
CFI Code Look Up Service
Quickly find the CFI code of any financial instrument with our CFI Code Look Up Service. This tool helps you identify and verify codes with ease, ensuring consistency and compliance with ISO 10962.
Discover Now
Download Excel
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
If a security has been lost, stolen or destroyed, it can be stopped at SIX. Securities reported for stopping include listed and unlisted Swiss securities, foreign securities if they are traded on the Swiss Stock Exchange and Euro bonds. The stopping does not mean that the instrument is blocked by authorities or is declared null and void. The stopping only means that the owner has reported a security missing and that legal proceedings might be taken to declare the security null and void or that a security might have been declared null and void in an official publication after legal proceedings.
A stopping announcement can help find missing instruments and, on the other hand, warns banks and their clients against acquiring such securities. SIX does not accept responsibility for the correctness, accuracy or completeness of the information on a security, as it cannot verify its accuracy.
After SIX has received a stopping message, the instrument is added to the SIX data base and is available to clients via our distribution platforms and our display product.
Contact your
local client support
if you have a stopping announcement.
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.
ISO 4217
Currency
ensures compatibility across systems and geographies, provides historical references, and minor unit info. It enables seamless global communication and compliant transactions.
The ISO 4217 standard for currency codes provides clarity and precision in financial transactions, avoiding confusion and reducing errors.
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 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.
SIX Financial Information Ltd as the Secretariat of the Maintenance Agency for CFI.
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.
Please refer to ISO 6166 and the
ISIN Guidelines
For CH ISINs, please refer to
ISO 6166
. For other ISINs, contact the responsible
NNA
You can register for free at the
ISIN LookUp Tool
to check ISIN status.
Have Questions? We're Here to Help!
We're always ready to assist you. Reach out to us for any inquiries or support you need.
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