Null Exchanges in delisted US instrument list

EODHD API
1

Hi.

I downloaded the instrument details for the US instruments using REST requests like this:

https://eodhd.com/api/fundamentals/ZAL.US?filter=General&api_token=xxxxxxxxxxxx.xxxxxxxxxx&fmt=json

283 of the instruments that I downloaded look like this:

{
  "Code": "ZAL",
  "Type": "Common Stock",
  "Name": "ZAL",
  "Exchange": null,
  "CurrencyCode": "USD",
  "CurrencyName": "US Dollar",
  "CurrencySymbol": "$",
  "CountryName": "USA",
  "CountryISO": "US",
  "OpenFigi": null,
  "ISIN": null,
  "LEI": null,
  "PrimaryTicker": null,
  "CUSIP": null,
  "CIK": null,
  "EmployerIdNumber": null,
  "FiscalYearEnd": null,
  "IPODate": null,
  "InternationalDomestic": null,
  "Sector": null,
  "Industry": null,
  "GicSector": null,
  "GicGroup": null,
  "GicIndustry": null,
  "GicSubIndustry": null,
  "HomeCategory": null,
  "IsDelisted": true,
  "DelistedDate": "2017-09-08",
  "Description": null,
  "Address": null,
  "AddressData": null,
  "Listings": {},
  "Officers": {},
  "Phone": null,
  "WebURL": null,
  "LogoURL": "",
  "FullTimeEmployees": null
}

Many of the attributes are NULL, including Exchange, all the market identifiers and all the classifications. All of the 283 affected instruments have "IsDelisted": true.

From the EOD api I see that at least some of these instruments have been traded while they were listed. EG:

https://eodhd.com/api/eod/ZAL.US?from=2016-10-13&to=2016-10-13&period=d&api_token=xxxxxxxxxxxx.xxxxxxxxxx&fmt=json

[
  {
    "date": "2016-10-13",
    "open": 37.29,
    "high": 37.29,
    "low": 37.225,
    "close": 37.225,
    "adjusted_close": 37.225,
    "volume": 200
  }
]

My question is what is the semantics of a NULL Exchange value? It would seem that the instrument was traded, but where? NYSE or NASDAQ or somewhere else?

I can supply a list of the 283 affected instruments if it helps.

Thanks,

Adam Crowther

2

Hello Adam,

Thanks for reaching out.
Fundamental data for delisted symbols may be unavailable if the delisting occurred more than six years ago, as we did not have coverage for those symbols at the time. Unfortunately, we’re unable to update them now, as data for delisted symbols is no longer available from our sources.