The following is a detailed analysis of the S&P 500 companies and their independent auditors.
EY audits 152 of those 500 companies followed by PwC who audits 156 companies. However, PwC earns the highest fees of $2,425 million from their clients followed by EY which brings in $1,821 million. Deloitte and KPMG takes the third and fourth spot with 99 and 84 clients respectively.
| Audit Firm | # of clients | Total fees ($ M) |
|---|---|---|
| PwC | 152 | 2,425 |
| EY | 156 | 1,821 |
| Deloitte | 99 | 1,311 |
| KPMG | 84 | 994 |
| GT | 5 | 8 |
| BDO | 1 | 8 |
| Grand Total | 497 | 6,567 |
The big4 firms audits 491 out of the 497 companies. PwC gets 37% share of the total audit fees while only auditing 31% of the companies. EY, Deloitte, and KPMG audits 31%, 20%, and 17% of the S&P 500 clients companies respectively.
