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Here's the story. There is only one option feed .. called OPRA..... anyone
who buys the feed gets it all. The only extras relate to currency option
and single stock futures. Every quote vendor that distributes option quotes
has all five exchanges. How they massage the data and redistribute it is
based on customer demand. There is no amount of lobbying by a provider (an
exchange) that will influence a quote vendor ... that has to come from the
enduser side.
-----Original Message-----
From: Chris Baker [mailto:chrisbak49@xxxxxxx]
Sent: Wednesday, April 03, 2002 10:13 PM
To: realtraders@xxxxxxxxxxxxxxx
Subject: RE: [RT] ISE sentiment index - exchange data API's
Actually it seems I was wrong - there is apparently a single
consolidated feed for all U.S. exchanges, as well as feeds from each
exchange. This PDF document is somewhat dated, but the graphic in
this PDF document show how the "consolidated" feed works.
http://www.fif.com/docs/t1issuesppt.pdf
(google.com found it so I guess we can read it.)
The ISE is listed as an exchange.
So as single-stock futures start trading they will automatically start
appearing on the consolidated feed for 3rd party vendors. The PDF
document highlights capacity constraints so it's not clear if a 3rd
party data vendor could also get exchange data directly from the
exchange, which might be somewhat faster.
So if the ISE transmits the same Call and Put statistical data as the
other exchanges who trade options, then data vendors like DTN should
be receiving that statistical data.
> -----Original Message-----
> From: Chris Baker [mailto:chrisbak49@xxxxxxx]
> Sent: Wednesday, April 03, 2002 9:26 PM
> To: realtraders@xxxxxxxxxxxxxxx
> Subject: RE: [RT] ISE sentiment index - exchange data API's
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