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»Forums Index »Product Support »Data and Content Support »Delisted Stocks
Author Topic: Delisted Stocks (8 messages, Page 1 of 1)

-Interested User-
Posts: 9
Joined: Sep 13, 2016

Posted: Mar 27, 2017 11:11 AM          Msg. 1 of 8
Does IQFeed keep daily and 1-minute historical data for delisted stocks?

-DTN Evangelist-
Posts: 123
Joined: Aug 22, 2014

Posted: Mar 27, 2017 01:22 PM          Msg. 2 of 8
The daily and Minute data is available on de-listed stocks unless the symbol is reused.

Stephen Shockey | Telvent DTN LLC | Trading Markets | United States |Customer Service Technical Support

-Interested User-
Posts: 7
Joined: May 16, 2017

Posted: May 16, 2017 03:17 PM          Msg. 3 of 8
A related question:

If a stock went thru ticker change, e.g. UA.C --> UA, would the old ticker info (UA.C) be kept anywhere?

Lu Feng

-DTN Evangelist-
Posts: 123
Joined: Aug 22, 2014

Posted: May 16, 2017 03:21 PM          Msg. 4 of 8
The symbol UA.C has stored historical Daily and Intraday data.

Please let us know if there is anything else we can assist you with.

Stephen Shockey | Telvent DTN LLC | Trading Markets | United States |Customer Service Technical Support

-Interested User-
Posts: 7
Joined: May 16, 2017

Posted: May 16, 2017 03:29 PM          Msg. 5 of 8
Thx Stephen, for your quick response.

Sorry that I was not clear. I can see that UA.C would still be in your system w/ stored historical data (because that ticker has not been reused). My question is actually "is there a way I would know, from your data alone, that today's UA and the previous UA.C are actually the same stock"?

A more extreme example: Is there a way I would know that today's "C" was once "CCI" (and "TRV" even earlier)?

This is more of a symbology issue than historical price availability issue.

-Interested User-
Posts: 11
Joined: Sep 25, 2014

Posted: May 16, 2017 05:48 PM          Msg. 6 of 8
Hi Lu,
Our data alone will not notify you of a symbol change. IQFeed publishes a daily list of "US Stocks - Changes" at, under the Notifies section of our symbol guide page, but this is not a historical compendium of all previously used symbols. I'm sorry, I don't believe we have such a list. You may need to check the investor relations section of a company's website. You're also welcome to reach out to our support staff to help you in your research.

Mark Eash, Trading Markets Customer Service DTN
9110 West Dodge Rd, Ste 200, Omaha, Ne 68114
800-397-7000 (DTNIQ & IQFEED) | 402-255-3682 (Fax) | |

Edited by DTN_mark_e on May 16, 2017 at 06:06 PM

DTN_Tim Walter
-DTN Guru-
Posts: 1130
Joined: Apr 25, 2006

Posted: May 17, 2017 08:09 AM          Msg. 7 of 8
Just to elaborate further on our process in regards to the history of deleted symbols.

We generally do not delete any history unless a symbol is re-used or moved to a new symbol. Once it has, the old data is no longer available from our system.

So, if you know the symbol to look for it should be there if it has not been re-used, but as Mark mentioned, we do not have a lookup for these expired symbols, so you would need to know the symbol to have a chance of finding the data.


-Interested User-
Posts: 7
Joined: May 16, 2017

Posted: May 17, 2017 09:05 AM          Msg. 8 of 8
Thanks, Mark and Tim. It is clear.


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