I am working on a project that requires me to track firms' name changes.

  • The firms I am dealing with are international (a decent number of US firms, but also a sizeable number of European, Asian, and Latin American firms).
  • I only need firm name histories between roughly 2000-22.

I have access to WRDS (Wharton Research Data Services). I have poked around Compustat North America/Global. I could be wrong, but it seems like they only give the most recent firm names.

Thanks in advance!


1 Answer 1


Your WRDS includes CRSP: https://wrds-www.wharton.upenn.edu/pages/grid-items/crsp-coverage/

In CRSP, given a security's permno, you just retrieve the history of name changes, cusip changes, etc..

However, in addition to name changes, you may need to deal with mergers and spin-offs that change the permno.

Also CRSP is north american centric. A database called Osiris, also in WRDS, may help with some non-US name changes.

  • 3
    $\begingroup$ This is an example of a general strategy: (1) find a database that includes a unique permanent identifier (for CRSP this is permno) for all your companies (2) print all company names associated with that permanent ID $\endgroup$
    – nbbo2
    Commented Feb 5, 2023 at 20:34

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