Highest Main Board turnover in 2003
| Rank | Date | Turnover (HK$) | |
| 1 | 200312/16 | 34,477,797,000* | (before adjustment ) |
| 2 | 2003/09/25 | 21,355,025,827 | |
| 3 | 2003/10/23 | 20,186,171,857 | |
| 4 | 2003/11/06 | 19,909,801,957 | |
| 5 | 2003/10/02 | 19,847,164,253 | |
| 6 | 2003/09/24 | 19,811,296,917 | |
| 7 | 2003/10/09 | 19,036,334,215 | |
| 8 | 2003/10/08 | 19,007,076,710 | |
| 9 | 2003/09/04 | 18,920,757,449 | |
| 10 | 2003/10/03 | 18,681,059,606 |
* Include the turnover value for placing by BOC HK (2388) at total consideration of $14.65 billion.
Today's Main Board turnover was the highest since 15 February 2000, when the turnover was $35.75 billion.
Ten largest declines of the Hang Seng Index by points in 2003
| Rank | Date | Close | Decline (points) | Decline (%) |
| 1 | 03/10/23 | 11737.18 | -501.45 | -4.10 |
| 2 | 03/11/06 | 12150.09 | -288.83 | -2.32 |
| 3 | 03/12/16 | 12260.33 | -259.84 | -2.08 |
| 4 | 03/09/10 | 10810.31 | -236.51 | -2.14 |
| 5 | 03/03/31 | 8634.45 | -228.91 | -2.58 |
| 6 | 03/11/17 | 11997.02 | -206.51 | -1.69 |
| 7 | 03/06/23 | 9734.29 | -196.02 | -1.97 |
| 8 | 03/08/06 | 9987.54 | -189.84 | -1.87 |
| 9 | 03/03/27 | 8872.32 | -174.77 | -1.93 |
| 10 | 03/04/09 | 8636.85 | -169.81 | -1.93 |
