Top 10 M&A deals worldwide by value (in mil. USD) from 2000 to 2009:
| Rank | Year | Purchaser | Purchased | Transaction value (in mil. USD) |
|---|---|---|---|---|
| 1 | 2000 | Fusion: America Online Inc. (AOL) | Time Warner | 164,747 |
| 2 | 2000 | Glaxo Wellcome Plc. | SmithKline Beecham Plc. | 75,961 |
| 3 | 2004 | Royal Dutch Petroleum Co. | Shell Transport & Trading Co | 74,559 |
| 4 | 2006 | AT&T Inc. | BellSouth Corporation | 72,671 |
| 5 | 2001 | Comcast Corporation | AT&T Broadband & Internet Svcs | 72,041 |
| 6 | 2009 | Pfizer Inc. | Wyeth | 68,000 |
| 7 | 2000 | Spin-off: Nortel Networks Corporation | 59,974 | |
| 8 | 2002 | Pfizer Inc. | Pharmacia Corporation | 59,515 |
| 9 | 2004 | JP Morgan Chase & Co | Bank One Corp | 58,761 |
| 10 | 2008 | Inbev Inc. | Anheuser-Busch Companies, Inc | 52,000 |