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've been using Neoticker RT with IQFeed for two months, and I'm very happy with both of the products (I've had IQFeed for two years with very few complaints). The service from both companies is exceptional." - Comment from Public Forum
"I will tell others who want to go into trading that DTN ProphetX is an invaluable tool, I don't think anyone can trade without it..." - Comment from Luther
"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
"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
"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
"I like you guys better than *******...much more stable and a whole lot fewer issues." - Comment from Philip
"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
"I used to have *******, but they are way more money for the same thing. I have had no probs with data from DTN since switching over." - Comment from Public Forum Post
"I am keeping IQFeed, much better reliabilty than *******. I may refer a few other people in the office to switch as well." - Comment from Don
Home  Search  Register  Login  Blogs Recent Posts

Information on Various DTN Products:
DTN IQFeed | DTN ProphetX | DTN Ag | NxCore
Follow DTN_IQFeed on Twitter
DTN.IQ/IQFeed on Twitter
DTN News and Analysis on Twitter
»Forums Index »Product Support »DTN.IQ Client Software Support »Is there a structured way to find out about symbol changes
Author Topic: Is there a structured way to find out about symbol changes (4 messages, Page 1 of 1)

-Interested User-
Posts: 5
Joined: Jun 8, 2010

Posted: May 9, 2011 07:02 PM          Msg. 1 of 4
I am using IQConnect with custom code (in Java). I have a nightly process that backfills data that I missed during the day for whatever reasons. To do this I use the lookup calls to get tick data for symbols on a list I manage.

Occasionally one or more of these symbols would have a symbol change (example - the recent change of WFMI to WFM). At that point my calls start blowing up, returning an error message "Invalid symbol". This happens even if I ask for data in dates prior to the symbol change. Presumably I need to use the new symbol even for days when it did not really exist yet.

I know how to get splits (or at least some of them) via fundamentals messages. Is there any API that would allow me to get symbol change info?

Arnon Moscona

-DTN Guru-
Posts: 2034
Joined: Nov 21, 2005

Posted: May 10, 2011 09:03 AM          Msg. 2 of 4
Arnon, it sounds like you are correct as to the root of the problem you are experiencing. Unfortunately, we do not currently have symbol change messages available via the feed.

-DTN Evangelist-
Posts: 114
Joined: May 7, 2004

Posted: May 11, 2011 12:34 PM          Msg. 3 of 4
I'd like to hear how other people are solving this problem.

I automated a check of the symbol guide changes list (it's a long URI; see under NOTIFIES), but that information is often out-of-date. If it fails to include what I need, I check websites manually. Marketocracy seems to do a good job of tracking changes; I use Google and Yahoo as fallbacks.

I hope someone out there has a better solution!


-Interested User-
Posts: 5
Joined: Jun 8, 2010

Posted: May 16, 2011 05:24 PM          Msg. 4 of 4
Thanks. That's helpful, at least for manual use. Automated parsing of it seems a bit of an overkill for me right now.

Arnon Moscona


Time: Fri February 23, 2018 7:59 PM CFBB v1.2.0 16 ms.
© AderSoftware 2002-2003