FIGI (Financial Instrument Global Identifier) Regex for Python

What this pattern does

This page provides a comprehensive, battle-tested regular expression for matching figi (financial instrument global identifier), ported and verified for Python. Financial data validation has zero tolerance for false negatives — a missed invalid entry can corrupt downstream calculations. The snippet below is ready to drop into your Python project — whether you're validating in a Django view, a FastAPI endpoint, or a standalone data processing script.

Python Implementation

# FIGI (Financial Instrument Global Identifier)
# ReDoS-safe | RegexVault — Finance > Securities & Trading

import re

figi_financial_instrument_global_identifier_pattern = re.compile(r'^(?!.*[AEIOU])BBG[A-Z0-9]{9}$')

def validate_figi_financial_instrument_global_identifier(value: str) -> bool:
    return bool(figi_financial_instrument_global_identifier_pattern.fullmatch(value))

# Example
print(validate_figi_financial_instrument_global_identifier("BBG000B9XRY4"))  # True

Test Cases

When to use this pattern

This pattern is drawn from the Finance > Securities & Trading category and carries a ReDoS-safe certification. That matters for Python developers because particularly important in Python web servers where CPU-bound regex operations can stall concurrent request handling. RegexVault audits patterns against known backtracking attack vectors, ensuring you have the necessary context before using this regex in a high-stakes production environment.

Common Pitfalls

Technical Notes

FIGI is an open standard (OMG) maintained by Bloomberg. The BBG prefix identifies Bloomberg as the issuer. The last 2 digits are check digits. Free API available at openfigi.com.