CUSIP Numbers and How to Look Them Up

CUSIP numbers help you locate detailed information on securities

What to Know

  • A CUSIP number identifies securities, including stocks, of U.S. and Canadian companies and U.S. government and municiple bonds.
  • Quickest way to find a stock's CUSIP number: Perform a Google search in the format [stock trading symbol] CUSIP number.
  • Use a search tool such as QuantumOnline or Fidelity Investment's Find Symbol tool to find CUSIP numbers for a stock, mutual fund, or annuity.

This article explains what a CUSIP number is and how to locate it for a specific, stock, bond, mutual fund, annuity or other security. It includes information on the meaning of the characters in the CUSIP number and why they are important.

What Is a CUSIP Number?

A CUSIP (Committee on Uniform Securities Identification Procedures) number identifies securities, including stocks of all registered U.S. and Canadian companies, as well as U.S. government and municipal bonds.

CUSIP numbers are nine characters in length, consisting of numbers and letters. The CUSIP number is used in the CUSIP system, which is owned by the American Bankers Association (ABA) and operated by Standard & Poor’s. This system facilitates the clearing and settlement process of securities.

Importance of CUSIP Number to the Bond Market

Most stocks can be identified by three or four letters in their ticker symbol, such as INTC for the chip maker Intel, and there are usually around 20,000 unique ticker symbols for these publicly traded companies.

However, in the bond market there are well over 1,000,000 different bond issues. Most are municipal bonds issued by cities, counties, and states.

With so many different bond issues, a precise identification system is critical to keeping track of them.

What the Characters in a CUSIP Number Mean

The groupings of characters in a CUSIP number identify specific information:

  • First six characters: Known as the base or CUSIP-6; identifies the bond issuer
  • Seventh and eight characters: Identifies the bond maturity
  • Ninth character: An auto-generated check digit

How to Look Up a CUSIP Number

It's helpful to have as much information as possible for a successful CUSIP search for a security. A quick search tool can be found at You can find not only a company's CUSIP number, for example, but also a profile of the organization and a host of contact information for it.

Apple Inc CUSIP lookup

You can also use Fidelity Investment's Find Symbol tool to search for a stock, mutual fund, index, or annuity using a security name, trading symbol, CUSIP number, or fund number.

The MSRB’s Electronic Municipal Market Access website, known as EMMA, offers advanced search functions that can be used to track down securities information as well as look up CUSIP numbers.

Finding a Security's CUSIP Number

If you're looking for a stock, it can be as simple as performing a Google search. For example, a simple search for AAPL CUSIP number for Apple, Inc. will show 037833100.


You can also find the CUSIP number on official statements for a security. These can be documents like financial statements and confirmations of purchase. CUSIP numbers can also be obtained from securities dealers.

Knowing the CUSIP number can be helpful in planning out your stock trading strategy.

Research Using a CUSIP Number

The primary reason for looking up a CUSIP number is for information on a stock or bond. To access the entire CUSIP database requires a subscription through Standard & Poor's or a similar service or organization that provides the access to the CUSIP database.

However, for those seeking general information, a subscription isn't always necessary. 

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