Dear CSI Clients,
Two CMEGroup futures (formerly from CBT) are changing the minimum tick sizes effective 3March2008. Starting on this date, the prices will be sent using a different conversion factor.
What this means to particular users depends on the format of the download file received from CSI.
If you are receiving comma separated decimal files:
The numbers will continue to be the correct decimal value. If your internal databases can handle the true decimal value seamlessly then no additional adjustments will be necessary on your part.
If you are receiving comma separated whole number files:
The numbers will be in a different format as of the change date, with the new conversion factor being sent.
All contract sizes remain unchanged.
The following futures are affected:
- CSI # 44 & 144
- CSI # 251 & 293
The following options are affected:
30 Year T-Bonds (CSI#44 and CSI#144) are changing tick size from one 32nd to ½ of one 32nd
5 Year T-Notes (CSI#251 and CSI#293) are changing tick size from ½ of one 32nd to ¼ of one 32nd . CSI currently represents these as 64ths instead of the CBT method of 32nds and halves. The new representation will correspond to the CBT representation.
5 Year T-Note options (CSI#251) are changing tick size from one 64th to ½ of one 64th .
Sincerely,
CSI Database
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