| Reply To Message: |
| Posted By |
wrastatter@nyse.com on 6/4/2008 4:34:07 PM |
| Subject: |
RE: Openbook Ultra feed questions |
| Message: |
The OpenBook Ultra format will be ultimately the common format across all our markets. It started as the ArcaBook format but was changed after customer feedback. Ultra doesnt contain only Limit orders, it contains displayed crowd and specialist interest as well. |
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