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)




"You have an excellent product !!!!!!" - Comment from Arely
"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 just wanted to let you know how fast and easy I found it to integrate IQFeed into our existing Java code using your JNI client. In my experience, such things almost never go so smoothly - great job!" - Comment from Nate
"I am a hedge fund manager here. It’s funny, I have a Bloomberg terminal and a Bridge feed, but I still like having my DTN feed!" - Comment from Feras
"Just a quick one to say I'm very impressed so far :) The documentation for developers is excellent and I've quickly managed to get an app written to do historical downloads. The system is very robust and pretty quick considering the extent of data that's available. The support guys have been very helpful too, in combination with the forums it's been plain sailing so far!" - Comment from Adam
"It’s so nice to be working with real professionals!" - Comment from Len
"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
"I'm satisfied with IQFeed. It's the most reliable and fastest quote feed I have ever used. Although I'm a resident in China, it's still very fast!" - Comment from Xiaofei
"Everything is working great with the API. I love it." - Comment from Calvin
"My broker in Davenport suggested I give you a try as he uses your service and says its the best." - Comment from Bill via RT Chat
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 »Data and Content Support »Day/Time when lists and option chains are updated
Author Topic: Day/Time when lists and option chains are updated (5 messages, Page 1 of 1)

quickTick
-Interested User-
Posts: 35
Joined: Nov 17, 2013


Posted: Nov 6, 2017 05:36 PM          Msg. 1 of 5
I was wondering if there are definite times when you update any changes in lists (such as listed markets) and/or option chains.

For example, if that always happened Friday night, and one would make sure that the app is restarted, or the lists are reloaded, on Saturday, then one could be certain that nothing changes during trading or other times. It would not be necessary to repeatedly reload these lists, saving resources on both client and server.

Thanks for any info on this subject.

quickTick
-Interested User-
Posts: 35
Joined: Nov 17, 2013


Posted: Nov 7, 2017 09:12 AM          Msg. 2 of 5
It looks like both of these messages were meant for a different topic.

DTN_Tim Walter
-DTN Guru-
Posts: 1102
Joined: Apr 25, 2006


Posted: Nov 7, 2017 09:32 AM          Msg. 3 of 5
Thanks, I cleaned those up.

Listed markets, trade conditions, and most lookups are all updated on the fly, but normally updates are pushed out over the weekend.

The chains look like they update every morning by around 5 EST.

Tim

quickTick
-Interested User-
Posts: 35
Joined: Nov 17, 2013


Posted: Nov 7, 2017 11:41 AM          Msg. 4 of 5
Thanks for the info!

So if I load or reload an option chain maybe 1 hour before OPRA market open, there will be no need to check for updates for the rest of the day.

Regarding the listed markets, I did a quick comparison of the current list, and the one you have on your website. It seems the listedMarketID is more stable than the shortname. For example,
ARCA changed to NYSE_ARCA, yet remained at ID 11. And NMS changed to NGM, yet remained at ID 1 (although ID 21 was added).

So does the ID remain the same as long as a listed market exists?

For security types, can we expect that types 1, 2, 6, 8 and 9 will always keep their meaning, even if others are added or removed?
Edited by quickTick on Nov 7, 2017 at 11:42 AM

DTN_Tim Walter
-DTN Guru-
Posts: 1102
Joined: Apr 25, 2006


Posted: Nov 7, 2017 02:05 PM          Msg. 5 of 5
We do recommend loading it each day at startup to be safe, but other than adds and short/long name changes, you should be safe.

Tim
 

 

Time: Wed January 17, 2018 2:48 AM CFBB v1.2.0 16 ms.
© AderSoftware 2002-2003