SEDOL Code Validator
Instantly verify the validity of any SEDOL (Stock Exchange Daily Official List) code or generate valid samples for testing financial systems.
Validator
Verify SEDOL Code
Checksum Algorithm
We use the official weighted mod-10 algorithm (1, 3, 1, 7, 3, 9, 1) to ensure mathematical accuracy of the SEDOL identifier.
SEDOL Generator
For System Testing
Click Generate to start
Understanding the SEDOL Identifier
What is a SEDOL?
The SEDOL (Stock Exchange Daily Official List) is a unique 7-character identifier assigned to securities traded on the London Stock Exchange and other smaller exchanges in the United Kingdom and Ireland.
It serves as a key identifier for trades, settlements, and asset tracking in global financial markets.
How SEDOL Validation Works
Each SEDOL consists of two parts: a 6-character alphanumeric code followed by a check digit.
- Characters 1-6: Alphanumeric (0-9, B-Z, no vowels)
- Character 7: Weighted Check Digit
- Weights: 1, 3, 1, 7, 3, 9, 1
SEDOL vs. ISIN
While SEDOLs are used primarily in the UK, they are often embedded within the 12-character ISIN (International Securities Identification Number).
Frequently Asked Questions
Why are vowels excluded?
Vowels (A, E, I, O, U) are excluded from the alphanumeric characters in SEDOL codes to prevent the accidental formation of words or potentially offensive terms.
Is this tool free?
Yes, our SEDOL validator and generator is 100% free to use for developers, financial analysts, and system testing.
What is a check digit?
The 7th character is a "check digit" calculated using a weighted modulus-10 formula. It helps detect errors in entry or transmission of the code.
Does it validate international codes?
Yes! While originating in the UK, SEDOLs are assigned to securities worldwide and follow the same 7-character format.