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Advance Decline statistics differ among the various providers due to the
definitions that vary among them.
Many publish the gross advance declines (including all of the securities traded
on the exchange, regardless of type) and others remove the advance decline
numbers the issues which are not strictly pure individual equities, i.e..
preferreds, etc., on the assumption that changes due to interest rates and/or
other factors are not indicative of equity changes.
Richard Funkhouser
carrslem wrote:
> I have compared ADV/DECL/UNCH data from several feeds and, although most of
> them are usually close, they do differ, and occasionally the difference for
> some feeds is quite large.
>
> Carroll Slemaker
>
> > Visually, it seems to plot just fine. I wonder if this is a problem with
> my
> > choice of data feed (esignal). The $adv on esignal seems different than
> the
> > advancer data on Quote.com for example.
> >
> >
> >
> >
> >
> > >From: David Colin <david_colin@xxxxxxx>
> > >To: Compra dun <compradun@xxxxxxxxxxx>, omega-list@xxxxxxxxxx
> > >Subject: Re: Oddball oddities
> > >Date: Sun, 23 Feb 2003 13:14:44 -0800
> > >
> > >Are they plotting correctly? BEcause if the data you have is ascii then
> > >you
> > >need to manually change the session start time to 9:00 am instead of 930
> > >for
> > >natural hour bars to plot correctly.
> > >
> > >David
> > >
> > >
> > >
> > > > Yes natural bars on data 1 & data 2.
> > > >
> > > > I am using the defaults from the web site.
> > > >
> >
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