| Total Number of M & A announcements during 2001-2015 | 457 |
| Demerger cases identified | 95 |
| Mergers with more than 80% owned subsidiaries | 81 |
| Mergers with BIFR referred Companies as part of restructuring | 20 |
| Mergers cancelled/called off subsequently | 57 |
| Multiple mergers at the same time | 13 |
| Subsequent Mergers done within 5 years | 16 |
| Mergers through purchase of shares and not stock-swap | 23 |
| Data not available | 12 |
| Final List of Sample Firms | 140 |