Massive

Massive is a financial market data platform that provides REST and WebSocket APIs for accessing real-time and historical US stock market data, including trades, quotes, and aggregates ^{S13 S25}. It is used by developers, traders, and entrepreneurs who need institutional-grade market data to build trading apps, research tools, and dashboards ^{S1 S25}. The platform offers tiered subscription plans, including a free tier, and emphasizes fair access and developer-friendly tools like MCP support for AI agents ^{S73 S13}.

• Identity: Massive is a financial market data platform providing APIs for stock market data ^{S13 S25}.
• Core purpose: It removes barriers to market data access, making it affordable and accessible ^S1.
• Intended users: Developers, traders, and entrepreneurs building financial applications ^S1.
• Product scope: A single API platform with REST and WebSocket endpoints, plus client libraries and MCP server ^{S13 S25}.
• Positioning: Massive positions itself as reimagining market data for the 21st century, leveling the playing field ^S1.
• Claimed distinction: It claims direct fiber cross-connects to exchanges for faster, more reliable data ^S25.

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.com: an estimated 501,321 total monthly visits and about 121,787 monthly organic visits across 7,669 ranking keywords. Scout crawled 15 pages and measured a technical health score of 95/100.

• Total traffic (modeled): 501,321 monthly visits across all channels.
• Organic search traffic (estimated): 121,787 monthly visits from search.
• Strongest sampled ranking: massive at position 1.
• Leading page in the collected evidence: https://massive.com/dashboard/login.
• Closest measured organic competitor: youtube.com, appearing 3 times in the sampled first-page SERPs.
• Technical crawl: 15 pages, health score 95/100.

Website intelligence — Collected evidence

Company identity and positioning

Total website traffic

Domain identity

Website capture

Top organic keywords

Independent Google result page

Query: massive

Website intelligence — Collected evidence

Prioritized website intelligence pages

Features

Pricing and plans

Integrations and supported platforms

Product and company updates

No supporting public-page evidence was collected for this category.

This analysis created the first position baseline at 2026-10-23T08:23:12.432Z. Movement appears after the next fresh analysis using the same location and language.

Sampled competitors

Website intelligence — Collected evidence

Customers, testimonials, and first-party review claims

No supporting public-page evidence was collected for this category.

Independent review sources discovered

No links to supported independent review platforms were discovered on the collected pages.

AI-assistant referral traffic

• Estimated current generative-AI referral share: 5.3%

Website intelligence — Collected evidence

Site-stated AI capabilities

These are first-party product claims, not independent measurements of AI-search visibility.

Website intelligence — Collected evidence

Website evidence gaps

• customers: no usable public page was collected; verify whether the site publishes this evidence.
• reviews: no usable public page was collected; verify whether the site publishes this evidence.
• changes: no usable public page was collected; verify whether the site publishes this evidence.
• identity: no usable public page was collected; verify whether the site publishes this evidence.
• technical: no usable public page was collected; verify whether the site publishes this evidence.

Independent reviews

No citation-grounded independent review links were found.

Customer proof

Independent mentions

• I'm using TimescaleDB to manage 450GB of stocks and options data from Massive... — I'm using TimescaleDB to manage 450GB of stocks and options data from Massive (what used to be polygon.io), and I've been getting LLM agents to iterate over academic research to see if anything works to improve trading with backtesting.
• Experiencing loss of quality of service with Massive Stocks websocket / Elite Trader — Hi, I am experiencing a loss of quality of service with the Massive Stocks websocket, and I need the feedback of other users. Since February, I have delay at the opening, and now I can even have some during the day. And the delay can be quite big at times (up to 3min) I did not have that before. Delay is measured by comparing current/local timestamp to the one in the websocket stream. It does not seem to be an ISP issue as I can get '903 MBps download' with a speed test done at a time I have del
• Stock Price API — Real-Time & Historical Market Data / Massive — # Access every US stock trade, quote, and event. From '03 to now. Tick-level data from every US exchange, dark pool, and FINRA TRF — over REST, WebSockets, and flat files. Built for developers, builders, and the models they train. Free tier · 5 req/min ·
• Why I Built a CLI for Massive Financial Data / Spicer Matthews — Massive CLI wraps the entire Massive API into a single binary. That means access to six major asset classes, real-time WebSocket streaming, bulk historical data downloads, and partner data sources — all from your terminal.
• Alinea Invest's 126M API Requests with Massive Data / Massive posted on the topic / LinkedIn — does it take for a fintech startup to go from Y Combinator to 126 million monthly API requests with a small team? We sat down with the co-founder of Alinea Invest, a next-generation investing app with over two million downloads, to talk about how they
• Reddit Sentiment Analyzer — I tested Massive and Databento live feeds today, not expecting there to be much of a difference, but Massive had statistically significant numbers of events with latency over 500ms, even reaching over 1s latency (on their end, not mine). On the other hand, Databento’s live feed (I ran concurrently with Massive) had a maximum latency of 35ms, and 21ms of that was travel time to my local server. Is this normal for Massive’s websocket to have such poor quality feeds? The exact amount was 1.87% of a

External links were grounded in one live web search. Search snippets are leads, not independently scraped page content; rejected links remain available in Review evidence.

Not found on the collected pages: contact and support, security and compliance. This only means Scout did not find it on the pages it read; it says nothing about the company itself.

Not found in the collected public sources: public roadmap, changelog or release notes, status page, separate help center or knowledge base.

Scout — Bounded technical crawl

• Pages crawled: 15 of 15 maximum
• Technical health: 95/100
• Critical issues: 0
• Warnings: 10
• Notices: 9

Issues

Crawled pages

This is a bounded Scout crawl. Core Web Vitals and Lighthouse scores are not claimed unless a dedicated performance audit is connected.

Modeled acquisition channels

First-party connections

No first-party Search Console or Analytics numbers are shown until the site owner authorizes the corresponding Google account. Scout traffic model values above are modeled estimates, not private analytics totals.

The collected pages do not mention any competitors by name. Evidence gaps include lack of detailed pricing for Business plans, no customer counts or adoption metrics, and no independent review ratings. Open questions include the exact scope of partner datasets and the terms of the x402 pay-per-request service.

This report is based on 14 of 15 collected pages from massive.com, including the homepage, about, pricing, API docs, knowledge base articles, and career pages. Static and browser rendering crawls were used; external proof search was enabled but only verified the existence of linked results, not their content. Limitations include missing pages and the fact that some claims are marketing statements rather than verified facts.

• Documentationhttps://massive.com/Verified
• Official Websitehttps://massive.com/aboutVerified
• Documentationhttps://massive.com/docsVerified
• Pricing Pagehttps://massive.com/pricingVerified
• Pricing Pagehttps://massive.com/blog/real-time-forex-data-plansVerified
• Pricing Pagehttps://massive.com/knowledge-base/article/do-massives-futures-plans-include-vix-futures-or-exchanges-like-ice-and-eurexVerified
• Pricing Pagehttps://massive.com/knowledge-base/article/does-the-business-plan-include-real-time-trades-and-quotes-or-only-fair-market-valueVerified
• Pricing Pagehttps://massive.com/knowledge-base/article/how-do-i-get-the-official-closing-price-for-a-stockVerified
• Pricing Pagehttps://massive.com/knowledge-base/article/on-the-free-basic-plan-when-can-i-pull-the-previous-trading-days-dataVerified
• Pricing Pagehttps://massive.com/knowledge-base/article/which-plan-do-i-need-to-show-massive-data-in-my-appVerified
• Official Websitehttps://massive.com/careers/categories/productVerified
• Official Websitehttps://massive.com/careers/position/rust-engineer-platformVerified
• Official Websitehttps://massive.com/careers/position/senior-data-engineer-ii-product-engineeringVerified
• Official Websitehttps://massive.com/knowledge-base/article/can-i-execute-trades-through-massives-platformVerified
• Articlehttps://news.ycombinator.com/item?id=47303653Verified
• Articlehttps://www.elitetrader.com/et/threads/experiencing-loss-of-quality-of-service-with-massive-stocks-websocket.389898/Verified
• Articlehttps://massive.com/blog/tag/case-studyVerified
• Articlehttps://massive.com/stocksVerified
• Articlehttps://spicermatthews.com/blog/why-i-built-a-cli-for-massive-financial-data/Verified
• Articlehttps://www.linkedin.com/posts/massive-inc_how-alinea-scaled-to-126m-requests-a-month-activity-7440794453667205120-KGXeVerified
• Articlehttps://reddit.sentinel-team.org/posts/1vghuml/snapshots/2026-08-06T20%3A51%3A32.605184ZVerified