There is a great deal of 'dead' data for CJ prior to March 15, 2017. Does Yahoo scan for bad data, including data like this?
I see the 5 year chart appears to flat line prior to March 1, 2017. I have alerted our engineering team who will investigate and make any needed corrections. Thanks for reporting this!
C&J filed for Chapter 11 bankruptcy and canceled the legacy C&J common stock that traded under NYSE:CJES in January 2017. The company started trading again on the NYSE MKT on 6-Mar-2017 under the new symbol NYSE:CJ. YF should have trade data back to that date like Google Finance and likely nothing before that date.
The company may have traded on the OTC market under CJJY for a time but not sure how to get that data. However, Marketwatch.com does have trade data under CJ starting 17-Jan-2017 but this is likely OTC:CJJY data copied over to CJ.
Thanks rayo, I have added your comments to the ticket.