[REVIEW] Delisted Stock Companies Data

When a company is acquired, goes bankrupt, or is otherwise removed from an exchange, its ticker stops trading — but its price history, fundamentals, dividends and splits stay in EODHD. You can list every delisted symbol on an exchange and then query it with the same endpoints you use for active tickers. This is what makes survivorship-bias-free backtesting and long-horizon research possible.

Working with delisted data is a two-step job: find the ticker in the exchange symbol list, then query the regular data endpoints with it. The traps are all in step one — the ticker you remember may now belong to a different company.

Step 1 — List Delisted Tickers

Use the Exchange Symbol List endpoint with delisted=1. It returns only the inactive symbols for that exchange; without the flag, or with delisted=0, you get only the active ones. The exchange code goes in the path — US covers the combined US exchanges.

https://eodhd.com/api/exchange-symbol-list/{EXCHANGE}?delisted=1&api_token=YOUR_API_TOKEN

Method GET. Authentication by api_token. The default output is CSV; add fmt=json for a JSON array.

Parameters

Request Example

URL cURL PHP Python R Chat GPT

https://eodhd.com/api/exchange-symbol-list/US?delisted=1&type=common_stock&api_token=YOUR_API_TOKEN&fmt=json

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curl --location "https://eodhd.com/api/exchange-symbol-list/US?delisted=1&type=common_stock&api_token=YOUR_API_TOKEN&fmt=json"

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$curl = curl_init();

curl_setopt_array($curl, array(
    CURLOPT_URL => 'https://eodhd.com/api/exchange-symbol-list/US?delisted=1&type=common_stock&api_token=YOUR_API_TOKEN&fmt=json',
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_ENCODING => '',
    CURLOPT_MAXREDIRS => 10,
    CURLOPT_TIMEOUT => 0,
    CURLOPT_FOLLOWLOCATION => true,
    CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
    CURLOPT_CUSTOMREQUEST => 'GET',
));

$data = curl_exec($curl);
curl_close($curl);

try {
    $data = json_decode($data, true, 512, JSON_THROW_ON_ERROR);
    var_dump($data);
} catch (Exception $e) {
    echo 'Error. '.$e->getMessage();
}

(Sign up for free to get an API token)

import requests

url = f'https://eodhd.com/api/exchange-symbol-list/US?delisted=1&type=common_stock&api_token=YOUR_API_TOKEN&fmt=json'
data = requests.get(url).json()

print(data)

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library(httr)
library(jsonlite)

url <- 'https://eodhd.com/api/exchange-symbol-list/US?delisted=1&type=common_stock&api_token=YOUR_API_TOKEN&fmt=json'
response <- GET(url)

if (http_type(response) == "application/json") {
    content <- content(response, "text", encoding = "UTF-8")
    cat(content)
} else {
    cat("Error while receiving data\n")
}

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How to use it (YouTube)

Response Example

Two rows from the delisted common stocks on US — one from 2003, one from 2023:

[
  {
    "Code": "AAAB",
    "Name": "Admiralty Bancorp Inc",
    "Country": "USA",
    "Exchange": "NASDAQ",
    "Currency": "USD",
    "Type": "Common Stock",
    "Isin": null
  },
  {
    "Code": "ATVI",
    "Name": "Activision Blizzard Inc",
    "Country": "USA",
    "Exchange": "NASDAQ",
    "Currency": "USD",
    "Type": "Common Stock",
    "Isin": "US00507V1098"
  }
]

Response Fields

How the type Filter Groups Instruments

The five allowed values are groups, not literal Type strings. On the US delisted list they break down like this:

Delisted Coverage by Exchange

Delisted symbols are not a US-only feature. A sample of exchange codes, measured in September 2026:

The full list of exchange codes is in the Exchanges API.

Reused Tickers and the _old Convention

This is the single biggest trap in delisted data, and it fails silently. When a ticker is freed up and later assigned to a different company, EODHD keeps the original company under the same code with an _old suffix. The bare code belongs to whoever holds it today.

1,778 codes on the US delisted list carry the _old suffix. A few use a trailing digit instead, such as TWX1 alongside TWX. The safe pattern is to resolve the company against the delisted symbol list rather than typing a remembered ticker: search the list by Name or Isin, and use the Code it gives you.

Step 2 — Get the Data for a Delisted Ticker

Once you have the code, query the regular endpoints. A delisted ticker keeps its full history up to the delisting date, and nothing about the request changes.

Request Example

End-of-day prices for ATVI.US — Activision Blizzard, delisted on 13 October 2023 after Microsoft completed the acquisition. The request returns 7,487 daily bars going back to 25 October 1993.

URL cURL PHP Python R Chat GPT

https://eodhd.com/api/eod/ATVI.US?api_token=YOUR_API_TOKEN&fmt=json

(Sign up for free to get an API token)

curl --location "https://eodhd.com/api/eod/ATVI.US?api_token=YOUR_API_TOKEN&fmt=json"

(Sign up for free to get an API token)

$curl = curl_init();

curl_setopt_array($curl, array(
    CURLOPT_URL => 'https://eodhd.com/api/eod/ATVI.US?api_token=YOUR_API_TOKEN&fmt=json',
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_ENCODING => '',
    CURLOPT_MAXREDIRS => 10,
    CURLOPT_TIMEOUT => 0,
    CURLOPT_FOLLOWLOCATION => true,
    CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
    CURLOPT_CUSTOMREQUEST => 'GET',
));

$data = curl_exec($curl);
curl_close($curl);

try {
    $data = json_decode($data, true, 512, JSON_THROW_ON_ERROR);
    var_dump($data);
} catch (Exception $e) {
    echo 'Error. '.$e->getMessage();
}

(Sign up for free to get an API token)

import requests

url = f'https://eodhd.com/api/eod/ATVI.US?api_token=YOUR_API_TOKEN&fmt=json'
data = requests.get(url).json()

print(data)

(Sign up for free to get an API token)

library(httr)
library(jsonlite)

url <- 'https://eodhd.com/api/eod/ATVI.US?api_token=YOUR_API_TOKEN&fmt=json'
response <- GET(url)

if (http_type(response) == "application/json") {
    content <- content(response, "text", encoding = "UTF-8")
    cat(content)
} else {
    cat("Error while receiving data\n")
}

(Sign up for free to get an API token)

New to coding? Our ChatGPT assistant can generate code in any language tailored to our API. Simply describe how you want to use our data, and get a working piece of code. Don’t forget to replace the API token with your own.

Try it now (it's free)!

How to use it (YouTube)

Response Example

The oldest bar and the final two:

[
  {
    "date": "1993-10-25",
    "open": 1.25,
    "high": 1.25,
    "low": 0.9375,
    "close": 0.9375,
    "adjusted_close": 0.0686,
    "volume": 18000
  },
  ...
  {
    "date": "2023-10-12",
    "open": 94.48,
    "high": 94.54,
    "low": 94.305,
    "close": 94.42,
    "adjusted_close": 94.42,
    "volume": 7325799
  },
  {
    "date": "2023-10-13",
    "open": 94.42,
    "high": 94.42,
    "low": 94.42,
    "close": 94.42,
    "adjusted_close": 94.42,
    "volume": 0
  }
]

Intraday Needs an Explicit Date Range

The Intraday API defaults to a recent window. For a delisted ticker that window sits entirely after the last trade, so a request without from and to returns an empty array with HTTP 200 — which looks like missing data but is not. Pass Unix timestamps that cover the period you actually want.

https://eodhd.com/api/intraday/ATVI.US?interval=5m&from=1696118400&to=1697241600&api_token=YOUR_API_TOKEN&fmt=json

How far back intraday reaches depends on the interval, not on when the ticker was delisted. The 1-minute series goes back furthest; 5-minute and 1-hour start around October 2020. Measured on delisted tickers:

Full parameters and interval rules are on the Intraday Historical Data API page.

Confirming a Ticker Is Delisted

The Fundamentals response carries the status in its General section.

What Data Exists, by Era

How much you get depends on how long ago the company left the exchange. Fundamentals are the dividing line: for older delistings the endpoint still answers with HTTP 200, but returns a 2 KB stub with little more than the name and exchange, rather than the full 400 KB-plus record.

Worked examples, all verified against the live API:

A zero in the dividends column is not always a gap — CELG.US and TWTR.US never paid one. If you need to confirm coverage for a specific ticker before you build on it, ask support.

Renamed, Not Delisted

A ticker you cannot find is not always a delisting. After a merger or a rebrand the company keeps trading under a new code, and the old one disappears from the active symbol list without ever reaching the delisted one. Check the US Stock Symbol Rename History API before you conclude that a company is gone — it maps old symbols to new ones for US exchanges, and its page carries the full parameter reference.

The same endpoint also explains where a reused ticker came from. Solidion Technology took over the STI code in February 2024, which is why SunTrust’s history now lives at STI_old.US:

{
  "exchange": "US",
  "old_symbol": "NUBI",
  "new_symbol": "STI",
  "company_name": "Solidion Technology, Inc. Common Stock",
  "effective": "2024-02-05"
}

Three practical notes when you query it alongside delisted data. Send from and to together or send neither — sending to on its own currently returns HTTP 500, while omitting both returns the trailing twelve months, which is the useful default. The ex parameter accepts US only; any other exchange returns an empty array rather than an error. And the endpoint answers in JSON whatever you pass in fmt.

Why Delisted Data Matters

A dataset that holds only currently listed companies suffers from survivorship bias. The failures, the bankruptcies and the takeovers are missing, so measured historical returns are too high and backtests are too kind. On US alone that is 60,191 symbols absent from an actives-only universe — including every bank that did not survive 2008 and every company acquired since.

Rebuilding a point-in-time universe means taking the delisted list for the exchange, keeping each symbol in the universe up to its last traded bar, and letting it drop out afterwards rather than deleting it from history. For whole-exchange daily snapshots rather than per-symbol requests, the Bulk API covers an entire exchange in one call.

Errors

Plans and API Calls

There is no separate delisted-data subscription. Listing the symbols is part of the Exchanges API, and each data endpoint is billed and gated exactly as it is for active tickers — a delisted ticker costs the same as a live one. The full accounting of calls, requests and daily limits is on the API Limits page, and the live counter for your own account is on the dashboard.

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Related APIs

• Exchanges API — every exchange code, and the active symbol lists the delisted flag toggles away from.
• US Stock Symbol Rename History API — full reference for the rename feed, including its own parameters and response fields.
• End-of-Day Historical Data API — periods, date ranges and the adjustment rules behind the price series.
• Fundamental Data API — everything in the Fundamentals record beyond the General section.
• Splits and Dividends API — corporate actions in detail, with their exact dates and ratios.
• Intraday Historical Data API — intervals, history depth and the Unix timestamp format used above.
• Bulk API — whole-exchange daily snapshots when per-symbol requests are too slow.
• API Limits — the daily call budget and the per-minute request cap.