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 was on the phone with a friend who uses CQG and right after the Fed announcement, CQG was as much as 30 seconds behind DTN.IQ. Some quotes were off by as much as 15-18 cents. Your feed never missed a beat." - Comment from Roger
"Thank God for your Data Feed as the only Zippers I see are on my pants (LOL), and no more 200 pip spikes to mess up charts." - Comment from Spiro via Email
"Previously I was using *******. IQFeed is WAY more economical, and for my charting needs is just as good, if not better." - Comment from Public Forum Post
"Very impressed with the quality of your feed - ******* is a real donkey in comparison." - Comment from A.C. via Email
"I was with ******* for 4 years at $230 a month, this is a huge savings for me, GOD BLESS YOU PEOPLE," - Comment from T.S. via Email
"I just wanted to say how happy I am with your service. I was able to download the API docs last week and I was able to replicate Interactive Brokers historical bar queries and realtime bar queries over the weekend. That was about one of the fastest integrations that I've ever done and it works perfectly!!!!" - Comment from Jason via Email
"The service is great, I see a noticeable improvement in my volume profiles over [broker]'s data feed" - Comment from Larry
"If someone needs the best quality data and backfill beyond what their broker provides at a rate that is the best in the industry, I highly recommend IQFeed." - Comment from Josh via Public Forum
"This beats the pants off CQG, I am definitely switching to the ProphetX 3.0!" - Comment from Stephen
"Thanks for the great product and support. During this week of high volume trading, my QuoteTracker + IQ Feed setup never missed a beat. Also, thanks for your swiftness in responding to data issues. I was on ******* for a few years before I made the switch over early this year, and wish I had done it a long time ago." - Comment from Ken
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 »Archive (2017 and earlier) »IQFeed Developer Support »Pre-market and after market trade question
Author Topic: Pre-market and after market trade question (2 messages, Page 1 of 1)

gwalschl
-Interested User-
Posts: 46
Joined: Oct 25, 2006
Posted: Sep 12, 2007 10:25 AM          Msg. 1 of 2
From a previous reply to a posting I made a few months back, I understand that the information in a summary message is not stored on the IQFeed servers and that the summary messages are just "snapshots" of what's on the IQFeed servers. Therefore, any extended trading information is just "pass through" when trade updates come along during pre-market or after hours because it's not stored on the servers.

Given this, if I want to cycle through, say 2000 symbols, after the post-market trading ends at 6:30pm EST, watching and then unwatching each of these symbols to generate a summary message for each one, will the "last" field after 6:30pm EST reflect the most recent price for after hours trading (if any after hours trading occurred)?

For pre-market conditions the next day, I don't think I can "cycle" through all 2000 symbols to generate summary messages as the only indication of pre-market trades would be through a trade update. Is that correct?

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

DTN IQFeed/DTN.IQ/DTN NxCore

Posted: Sep 12, 2007 04:23 PM          Msg. 2 of 2
see http://forums.dtn.com/index.cfm?page=topic&topicID=1796
Jay Froscheiser
DTN - Trading Markets
 

 

Time: Tue May 7, 2024 12:40 AM CFBB v1.2.0 13 ms.
© AderSoftware 2002-2003