Are CUSIP identifiers case sensitive like RIC number are?


1 Answer 1


CUSIPs are not case sensitive.

Any letters within a CUSIP are upper case.

The CUSIP identifier was developed in 1967 by ABA and has not changed significantly.

The specification for CUSIP is detailed here: https://www.cusip.com/pdf/CUSIP_Intro_03.14.11.pdf This provides some further detail about how letters (instead of digits) are used, and mainly relate to debt securities and international issues.


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