Thank you for your excellent reply, Gary. I did not realize until now that there are two schools of thought regarding Dow volume, and it is difficult to find detailed information or rationale for either approach. From what I could find, it appears that the 209mil approach is the more widely accepted and is apparently used by ESignal, Quote.com, MarketWatch, Wall Street Journal, Bloomberg, and others.
I don't have a strict preference one way or another, however, my real-time data vendor uses the 209mil approach and I am trying to compare apples-to-apples. Therefore, I would very much appreciate anything Quotes Plus could do to provide a symbol that uses the 209mil approach, e.g., perhaps even for the $DJI symbol as you suggested. Thank you very much. --- In [email protected], "gary" <[EMAIL PROTECTED]> wrote: > > Hello > > For the !DJ30 and !DJI indexes, we add the volume of all the components, and put it on the index. The volume that we have for each stock is the consolidated volune, meaning that in include the volume for that issue on all exchanges, so when we sum the volume for the components, we have the consolidated volume for that index. That's where the 548mil comes from. > > You don't say where you got the 209mill figure, but it most likely is the NYSE only volume for the dj30, i.e. only trades that occured on the NYSE are included in the count. > > The same issue exists with the NYSE total volume, we have the consolidated volume which runs from 3 to 5 billion shares per day, while the NYSE only exchange volume runs 2 to 2.5 billion per day. > > > After looking through all of the data that we receive, it looks like we do get that 209mil number, so I can probably use that on the !DJI and leave !DJ30 as is. > > > > > Best regards > > Gary Lyben > > > > > ----- Original Message ----- > From: chartsurgeon > To: [email protected] > Sent: Saturday, March 29, 2008 7:24 PM > Subject: [quotes-plus] Gary Lyben - Can you answer this question? Thanks. > > > I earlier posted a question concerning volume data results from the > functions qp_volume(0, "!dj30"). No response received. > > Specifically, > > 28 Mar 08 Dow30 volume was 209,002,369 shares. Quotes Plus reports it > as 548,731,000 shares. Big difference. > > Why the difference in these numbers? Can it be corrected? > > I use historical index volumes as reference points in my real-time > trading software. The Dow30 number is noticeable. > > Thanks in advance. >
