| Market Data Advisory Notices |
| To |
Market Data Distributors |
| From |
Market Data Operations |
| Subject |
IMPORTANT FINAL REMINDER: ITC 2.1 Message Changes to Volume and Size Fields Starting This Sunday, August 12, 2007 |
| Notice Date |
2007-08-08 |
| Notice Number |
Q2007-197 |
| Effective Date |
2007-08-12
|
| Please be reminded of the
attached important ITC 2.1 market
data message changes. |
|
|