How to Find the ISIN for Any Stock

Last updated: February 2026 · 9 min read

Need an ISIN for a specific security but don't know where to look? This guide covers every reliable method for finding ISINs—from free online databases to exchange websites to your broker's platform. Whether you're looking up a US blue chip, a German mid-cap, or a Japanese ETF, we've got you covered.

Method 1: Free Online ISIN Databases

Several websites maintain comprehensive ISIN databases that you can search for free:

Using OpenFIGI (Recommended for Developers)

Bloomberg's OpenFIGI is the most powerful free option. It maps between ticker symbols, ISINs, CUSIPs, SEDOLs, and FIGIs. You can search by ticker or name and get back the ISIN plus other identifiers.

The API endpoint is straightforward:

POST https://api.openfigi.com/v3/mapping
Content-Type: application/json

[{"idType":"TICKER","idValue":"AAPL","exchCode":"US"}]

// Response includes ISIN: US0378331005

Method 2: Stock Exchange Websites

Most major stock exchanges display the ISIN on each security's detail page. Here's where to find it on the world's largest exchanges:

Method 3: Your Broker Platform

If you have a brokerage account, the ISIN is typically displayed on the security detail page. Here's where to find it on popular platforms:

• Interactive Brokers: Contract description → "ISIN" field. Also available via TWS API.
• Trade Republic: Tap on any stock → scroll to "Stammdaten" → ISIN and WKN are shown.
• Scalable Capital: Security detail → "Kenndaten" section.
• comdirect / ING DiBa: Security overview → "Stammdaten" tab → lists ISIN and WKN.
• Charles Schwab / Fidelity: Security detail page → typically under "Details" or "Overview".
• Degiro: Product page → ISIN displayed prominently.

Method 4: Financial Data Portals

General-purpose financial websites often display ISINs in their security profiles:

• Yahoo Finance: Not directly shown on the main page, but available in the "Profile" tab for some securities.
• Google Finance: Generally does not display ISINs. Use ticker symbols instead, then convert using our tool.
• finanzen.net: Excellent for German securities—shows WKN and ISIN prominently on every stock page.
• Morningstar: Security detail pages include ISIN in the "Details" section.
• Bloomberg.com: Security pages show ISIN in the overview section for most listed instruments.
• MarketWatch: Limited ISIN display, but available for some international securities.

Method 5: National Numbering Agencies (Official Source)

ISINs are officially assigned by National Numbering Agencies (NNAs) in each country. If you need the authoritative source for an ISIN, contact the relevant NNA:

Quick Reference: Finding ISINs by Country

Tips for Difficult Lookups

• Dual-listed stocks: Companies listed on multiple exchanges may have different ISINs for each listing. Toyota has JP3633400001 in Japan but US8923313071 for the US ADR.
• Preferred shares vs common: Different share classes have different ISINs. Volkswagen has DE0007664039 (common) and DE0007664005 (preferred).
• ETFs: ETFs have their own ISINs separate from the underlying index. The iShares MSCI World ETF is IE00B4L5Y983, not the MSCI World Index itself.
• Bonds: Corporate and government bonds each have unique ISINs. Search by issuer name + maturity date for the most specific results.
• Newly listed securities: ISINs are typically assigned 1-3 days before the IPO date. Check the exchange's "new listings" section.
• Delisted securities: ISINs remain valid even after delisting, but may not appear in current databases. Historical databases or regulatory filings are your best bet.

Frequently Asked Questions

Is there a completely free ISIN database I can download?

There is no single free, downloadable database of all ISINs worldwide. However, OpenFIGI provides free API access to Bloomberg's identifier database, which is the next best thing. For specific countries, some exchanges publish lists of their listed securities with ISINs (e.g., Deutsche Börse publishes a daily file of all XETRA-listed instruments).

Can I look up an ISIN by ticker symbol?

Yes, but be careful: ticker symbols are not globally unique. "VOW" could be Volkswagen on XETRA or a different security elsewhere. Always specify the exchange when searching by ticker. OpenFIGI handles this well with its exchange code parameter.

Do cryptocurrency tokens have ISINs?

Traditional cryptocurrencies (Bitcoin, Ethereum) do not have ISINs because they are not securities in the traditional sense. However, crypto-related financial products do: Bitcoin ETFs (e.g., the iShares Bitcoin Trust, ISIN: US46438F1012), crypto ETNs, and tokenized securities each have their own ISINs.

How quickly is an ISIN assigned to a new security?

The NNA typically assigns an ISIN within 24-48 hours of receiving a request from the issuer. For IPOs, the ISIN is usually published 1-3 business days before the listing date. For bonds, it may be assigned on the day of issuance.