Here's how you find out who audits a company.
If you use Mergent: look up your company, then choose company details and scroll down and look to off-center right.
You can also do this in S&P's Netvantage. Once you look up your company, look under the Corporation Record area.
We also have a very advanced program Audit Analytics
- this program features 1,500 accounting firms & 20,000
publicly registered companies. Shows who is auditing whom & how
much they are paying for what services. Allows creation of reports by
auditor, fees, location, & industry. Available only in the Alkek Library.