1. Help Center
  2. Instruments
  3. Managing Instrument Identifiers

What is a LUSID Unique Instrument Identifier (LUID)?

This article will help you understand how a LUID is generated and how it's used to uniquely identify an instrument.

LUSID has a unique identifier for every instrument, called the 'LUSID Unique Instrument Identifier' (aka 'LUID'). An instrument's LUID is generated when the instrument is created, and is unique to your LUSID domain (client).

In addition to LUIDs, instrument must also be associated with at least 1 unique market identifier (e.g. FIGI or a unique ClientInternal ID you have generated) and can be associated with as many non-unique identifiers as you like (e.g. ISIN, SEDOL, CUSIP, Ticker etc). These identifiers can also be used to reference the instrument inside LUSID.