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I was once concerned about the same thing with Signal.
If I recall correctly, it turned out there were two Dow
Jones indices being broadcast - $INDU which agreed with
numbers quoted in the newspaper, and another one called
$DJ. This second one gave "theoretical" highs and lows - that
is the hypothetical values the Dow would show if all its component
shares hit their intraday highs or lows at the same time.
I found this to be of little use, so I only watch $INDU now.
In any case, I don't think this is necessarily a goof on the
part of Prophet. Perhaps they too have another index.
Regards.
>
>I received the response below from Prophet in regards to why Prophet's INDU
>cash prices differed from Bloomberg's data. Can you believe the BS answer
>I got?! I can't believe these guys actually do business! Only God knows
>what other data problems they have.
>
>Regards,
>Craig
>---------------------- Forwarded by Craig Nelson/NY/SBCM on 12/16/97 12:37
>PM ---------------------------
>
>
>BetterData@xxxxxxx on 12/16/97 12:19:29 PM
>
>To: Craig Nelson/NY/SBCM
>cc:
>Subject: Re: Cash Index
>
>
>
>
>In a message dated 97-12-16 11:30:44 EST, you write:
>> >>partial snip
>
>> Also, I found major diffs between your
>> data and Bloomberg's for *INDU, on the High, Low, and Open; the Close
>was
>> OK. Some diffs were as much as 20 points or so. Can I ask why this
>would
>> happen? Do you check your data against a second source to verify
>accuracy?
>The prices we get show the theoretical highs and lows for these indices;
>Bloomberg probably gets the actuals highs and lows. So typically our ranges
>will be greater.
>>>small snip
>
>- Tim
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