after reading this https://opendata.stackexchange.com/questions/857/is-there-a-resource-to-look-up-the-standard-industrial-classification-codes-that I realized that the CIK-to-SIC mapping list is not updated (data on the page is 2006) and it does not contain all CIKs I have. Then I found this Central Index Key (CIK) of all traded stocks but I still see that a lot of CIKs are missing.

I made a test and from 900 CIKs only 330 of them have a SIC from that list: it seems to me a very poor percentage. Is there a more updated and official list or an alternative to group the companies from edgar into industries/sectors?


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