Join the 80,000 other DTN customers who enjoy the fastest, most reliable data available. There is no better value than DTN!

(Move your cursor to this area to pause scrolling)

"I've been using IQFeed 4 in a multi-threaded situation for the last week or two on 2600 symbols or so with 100 simultaneous daily charts, and I have had 100% responsiveness." - Comment from Scott
"I am very pleased with the DTNIQ system for quotes and news." - Comment from Larry
"I am enjoying the feed very much - so superior to the broker provided feed I was previously using." - Comment from George
"I had always used ******* but for the past 2 weeks have been trying DTN IQFeed. Customer support has been extraordinary. They call just to make sure your problem hasn't recurred." - Comment from Public Forum
"If you want customer service that answers the phone, your best bet is IQFeed. I cannot stop praising them or their technical support. They are always there for you, and they are quick. I have used ****** too but the best value is IQFeed." - Comment from Public Forum
"The service is great, I see a noticeable improvement in my volume profiles over [broker]'s data feed" - Comment from Larry
"I like you guys better than *******...much more stable and a whole lot fewer issues." - Comment from Philip
"You are either overstaffed or people just don't have problems with your feed because customer support always answers the phone quickly." - Comment from Jay via Email
"With HUGE volume on AAPL and RIMM for 2 days, everyone in a trading room was whining about freezes, crashes and lag with *******, RealTick, TS and Cyber. InvestorRT with IQFeed was rock solid. I mean SOLID!" - Comment from Public IRC Chat
"I use IQ Feed, Great stuff as far as data analysis information, storage and retrieval is concerned." - Comment from Public Forum
Home  Search  Register  Login  Recent Posts

Information on DTN's Industries:
DTN Oil & Gas | DTN Trading | DTN Agriculture | DTN Weather
Follow DTNMarkets on Twitter
DTN.IQ/IQFeed on Twitter
DTN News and Analysis on Twitter
»Forums Index »Product Support »DTN Satellite Products »NASDAQ Level II plus Equity Options
Author Topic: NASDAQ Level II plus Equity Options (3 messages, Page 1 of 1)

-Interested User-
Posts: 16
Joined: May 12, 2004

Software for DTN RealTime Satellite

Posted: May 25, 2004 12:58 PM          Msg. 1 of 3
I'm looking at adding support for NASDAQ Level II to TRAX.

Can the receiver (D8080) support NASDAQ Level II and Equity Options at the same time?

Currently TRAX enables the receiver on a database level (i.e., to receive ALL symbols for each database). I envision that for Level II, TRAX would have the capability to monitor,
say a few hundred Level II symbols using the database watchlist of the DTN receiver.

What would you think would be an upper limit on the number of symbols to feasibly watch
on Level II? (With and without equity options)

TRAX: DTN RealTime
Software for DTN RealTime Satellite

-VP, Product Operations-
Posts: 1746
Joined: May 3, 2004


Posted: May 25, 2004 01:38 PM          Msg. 2 of 3
We do have redistribution customers processing equities, options and level II from the D8080 currently. Obviously you will need to be running Ethernet only (Serial and USB won't be able to keep up). As for Level II, it doesn't lend itself to processing in a watch list mode. Instead, you will receive all level II data and need to process it. You will get a flood of all MMID updates.

If you are concerned about the number of symbols you can watch, you would want to run in broadcast mode instead of watch list mode and let your application filter the symbols down. I don't know what the limit of symbols is for the box when it is "watching" for you, but the more symbols in the watch the box has to process the slower the box is going to be processing requests.

Jay Froscheiser
DTN Market Access, LLC.

-IQ Developer-
Posts: 33
Joined: May 3, 2004

Telvent DTN

Posted: Jun 2, 2004 10:28 AM          Msg. 3 of 3
While the D8080 is capable of monitoring hundreds of level two symbols, it is only recently that this could be put into practice. The receiver has recently added a 0x09040131 cross reference file. This file currently contains the symbol and mmid for each record number in the 0x09000131 database. This would allow you to watch only selected records for a specific set of symbol(s) using the watchlist capability of the receiver. There is one disadvantage however; the cross reference is only updated during the nightly refresh.. This means that any MMIDs that have expired or not quoted before for a given symbol will not appear in the cross reference as soon as they quote (they will appear in the cross reference the next day). It is a trade-off that could be made for performance reasons, but again the data would be incomplete if additional market makers started quoting....

In case you're wondering, the level two client in the DTNiQ satellite product currently watches the entire level two database, but we have plans to eventually use the 0x09040131 file to try to reduce the overhead, if requested by the user...

Nathan W. Bartsch - Senior Software Engineer - DTN Market Access


Time: Wed May 18, 2022 1:41 AM CFBB v1.2.0 31 ms.
© AderSoftware 2002-2003