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Massive Market Data API

Real-time and historical data from all US exchanges, dark pools and OTC markets plus options, indices, currencies and futures, over REST, WebSocket and SQL; polygon.io now 301-redirects to massive.com, so buyers searching the old name land here.

Made by: Massive
Primary category: Market data
Also listed under: Not recorded
Built for: Not recorded
Firm size: Not recorded
Deployment: Not recorded
Pricing model: Not recorded
What it costs: Not recorded
How we verified it: Confirmed on the vendor's own site
Source: the page we read
Last checked: 2026-10-11
On the vendor's site: open

Massive Market Data API is a market data product from Massive. Real-time and historical data from all US exchanges, dark pools and OTC markets plus options, indices, currencies and futures, over REST, WebSocket and SQL; polygon.io now 301-redirects to massive.com, so buyers searching the old name land here. Buyside Fintech verified that Massive lists this product on the vendor's own website on 2026-10-11, and the page we read is linked below. We do not record how it is deployed, how it is priced, what it costs and the firm sizes it serves for this product, because Massive does not publish it; the table below shows those rows empty rather than hiding them. Practitioner reviews and questions about Massive Market Data API appear below, and anyone at a firm that uses it can add one.

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How Massive describes itself

Stock API with real-time and historical tick data, unlimited usage via REST or WebSockets, standardized JSON and CSV formats. Instant access free tier.
Massive’s own website, read 2026-08-30

Their words, not ours, and about the company rather than this product. It is not an assessment and nothing in it has been checked.