Reference data

One endpoint for ISIN, WKN, ticker, CIK and LEI

44,206 securities, 34,438 with an ISIN, 14,069 with an LEI — with protection against ticker collisions.

curl "$API/tickers/resolve/DE0007164600"

{
  "name": "SAP SE",
  "isin": "DE0007164600", "wkn": "716460", "ticker": "SAP",
  "lei": "529900D6BF99LW9R2E68", "cik": 1000184,
  "country": "DE", "countrySource": "reference"
}

What you can do with it

Resolve any common identifierWithout passing the type.
Retrieve index and exchange constituentsAs a list with all identifiers.
Pull reference listsCountries, currencies, sectors, instrument types.

Why we built it this way

The same ticker denotes different companies on different exchanges: ALV is Allianz in Frankfurt and Autoliv in New York.

So on every merge we check whether the company names fit together, and reject what contradicts. Without that protection, foreign balance sheets end up under familiar names — and nobody notices, because the result looks plausible.

Improvements

LEI is now part of resolution — that unlocks the European statements
Country is weighted by reliability instead of guessed from the ISIN prefix
Contradictory attributions are rejected instead of accepted

Endpoints

GET	`/tickers/resolve/{identifier}`	Resolve any identifier
GET	`/tickers/{ticker_symbol}`	Master data for a symbol
GET	`/exchanges/{exchange_ref}/constituents`	Index / exchange constituents

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