Filing size of 10-K reports

No too long ago a student asked me if it was possible to find out what the size was for specific filings of companies with the SEC. Specifically it concerned the 10-K filings which are the annual reports with a comprehensive summary of the companies financial health. As I understand it, the file size of these filings was to be used in an exercise and served as a proxy for financial reporting readability.

To find the original filings it is of course possible to use the EDGAR search option to find the original full-text filings and parts (including the XBRL filings):

Using the Central Index Key (CIK), Ticker, or Company name it is easy to find a specific company. Using the Filing Type search box you can narrow the search down to specific filings, like 10-K. This is often possible going back to 1993/1994 (depends on the company).

A specific 10-K filing overview in Edgar would look as follows:

If you need to do this for several hundreds of companies and multiple years it would take some time to collect the file size data. If you have access to the Audit Analytics database it is possible to get the 10-K file size for a large number of companies at once through the WRDS platform. Audit Analytics has a part database that is called Accelerated Filer.


Through this part database it is possible to get filings data (from 2000 to now) using Ticker lists or CIK lists. In the example output below I have put the following variables:

NAME = Company Name
FORM FKEY = Form name (10-K and 10-Q)
FISCAL YE = Fiscal Year End
FILE SIZE = Filing size
MATCHFY_SUMFEES_FY = Fiscal Year

Example output using Excel to filter for just 10-K filings:

Important: If you look at the 2015 10-K form file size according to Audit Analytics for the company ADVANCE AUTO PARTS INC this is 17 MB. This corresponds (roughly) with the size of Complete submission file according to EDGAR: 17.748.770. The Complete submission file in Edgar includes not just text and html codes, but may also include pictures and any other file types (Excel files etc.).

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