Nasdaq Data Link

What Quandl became — Nasdaq's own exchange feeds plus a curated data catalogue.

by Nasdaq

Last updated

Visit Nasdaq Data Link
From
Free tier only
Latency
Realtime
Non-US markets
Yes
Platforms
Web, Library

What it is

Nasdaq Data Link is what Quandl became. The plumbing is still recognisable — the same /api/v3 paths, the same quandl_error payloads — but everything behind it changed. Nasdaq now markets "more than 350 trusted data sets" and runs the platform as the delivery channel for its own exchange products: Nasdaq Basic, TotalView, Smart Options, the Global Index Data Service, the Nasdaq Fund Network. Third-party publishers remain, Sharadar's fundamentals among them, but the open-data library that made Quandl a fixture in every tutorial is mostly gone.

Pricing

A free account gets an API key and whatever free data is left. Past that, nothing on the public site quotes a number: premium datasets are priced per dataset, and the exchange feeds and file delivery Nasdaq leads with end in a Contact Us button. Budget a sales conversation, not a checkout.

Data & coverage

US equities and options from Nasdaq's own markets — six options venues (PHLX, NOM, ISE, GEMX, MRX and Nasdaq Texas, the venue the old BX product codes now carry) — plus indices and fund data. Europe arrived by migration: Nasdaq's European File Delivery Service moved into Nasdaq Data Link Files over SFTP on 1 July 2026, taking Nordic and Baltic end-of-day files, reference data, historical ITCH and the LBMA files with it.

Integrations

REST for tables, streaming for real-time feeds, SFTP for files, and R, Python and Excel clients. There is also a first-party MCP server, which hands an AI agent the data a customer already subscribes to through a single endpoint, rather than adding any data of its own. It is shipped and real, but there is no self-serve route to it: access runs through sales, and the OAuth credentials are issued during onboarding. That makes it the least reachable of the MCP servers in this catalogue, however official. Check the Python client before building on it: nasdaq-data-link 1.0.4 on PyPI is dated August 2022, the default branch has had no commit since, and 25 issues are open.

Limitations

  • The free layer is a remnant. One product in the whole catalogue is still flagged free; FRED, OPEC, Zillow and the Bitcoin chain series are no longer listed at all, and the WIKI equity prices everyone used stopped updating in March 2018. LBMA came back, but as a paid feed.
  • The documentation site has been retired: docs.data.nasdaq.com redirects to a page that 404s, and the legacy database-listing endpoint answers 410 Gone.
  • It delivers data and nothing else — no charts, no screener, no alerts.

Alternatives

For the macro series that used to live here, FRED, the IMF and the World Bank run their own APIs and withdrew nothing. For US equities and options priced on the page, Massive (formerly Polygon.io), Databento and Tiingo quote a number without a call — see the rest of the market data APIs.

Specs

Interfaces
API, Python, MCP server, spreadsheet add-in
Export
CSV, JSON
Asset classes
Stocks, ETF, Options, Indices, Mutual funds, Bonds, Commodities
Markets
US, EU
Platforms
Web, Library
AI features
None
Pricing verified
Capabilities verified
Coverage verified

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Named as a replacement for

FAQ

Is Nasdaq Data Link the same thing as Quandl?

It is the same platform under a new owner and name. Nasdaq acquired Quandl in 2018 and relaunched it as Nasdaq Data Link in 2021. The API still answers on the old /api/v3 paths and still returns errors labelled quandl_error, so old code mostly runs — but the catalogue behind it is not the one Quandl had.

Is Nasdaq Data Link still free?

Barely. A free account and a free API key still exist, but of the 210 products in the catalogue on 13 September 2026 exactly one is flagged free — a carbon-removal issuance calendar. FRED, OPEC, Zillow, the Bitcoin chain series and the rest of the open-data long tail are not listed at all any more, and the endpoint that used to enumerate the databases now answers 410 Gone.

Can I still get free end-of-day US stock prices from it?

No. The WIKI end-of-day equity dataset that most people came to Quandl for stopped updating in 2018, and nothing free replaced it. Current US equity pricing on the platform is a paid Nasdaq exchange product or a paid publisher dataset such as Sharadar.

Where are the API docs?

Effectively nowhere public. The developer site at docs.data.nasdaq.com now redirects to a page that returns 404, and the specification links that remain sit on Nasdaq's own product and Nasdaq Trader pages.