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Those are calculated and will be different from different vendors, If you think
that is bad watch OEX on DTN RT and run your DTNIQ, which is fed by S&P
sometimes there is a 2 point difference, The CBOE is the version of OEX we need
and the @ISN from the NYSE is what we need, contact DTN and let them know I have
been fighting for accurate index options, as Bridge butchers them, I have to run
DTN IQ to get good options quotes, from S&P, but the volume will be off. I don't
think there is a data provider that can deliver what they claim.
____________________Reply Separator____________________
Subject: GEN: DATA ACCURACY PROBLEM
Author: owner-realtraders@xxxxxxxxxxxxxx
Date: 10/16/98 9:24 AM
Group:
My BMI data feed one day this week showed the daily a/d figures
at net -505. I don't remember the exact figure but my DTN feed
showed > -505. The next day's WSJ showed the figure to be -469.
Why the difference and how do you get around this problem? Is
it because I have the 'delayed' version? All my quotes on the indexes
are supposed to be 'real time'.
Charles.
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