Out of the companies whose securities are traded on NSE, given below are names of corporates with highest number of complaints pending against them for more than 2 months as on September 30, 2006.
| Sr. No. | Name of Corporate | Number of complaints pending |
| 1 | Oil & Natural Gas Corpn. Ltd. | 17 |
| 2 | Administrator of Specified undertaking of Unit Trust of India | 5 |
| 3 | Sterlite Industries (India) Ltd. | 5 |
| 4 | GAIL (India) Limited | 2 |
| 5 | Hindustan Lever Ltd | 2 |
| 6 | Nalwa Sons Investments Limited | 2 |
| 7 | Monnet Ispat Ltd | 2 |
| 8 | Mahanagar Telephone Nigam Ltd | 2 |
| 9 | Oswal Chemicals & Fertilizers Ltd | 2 |
| 10 | Reliance Petroleum Limited | 2 |