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 · no credit card.
{
"ticker": "AAPL",
"queryCount": 22,
"adjusted": true,
"results": [{
"o": 233.80,
"h": 234.90,
"l": 233.50,
"c": 234.18,
"v": 67804280,
"t": 1784275200000
}],
"status": "OK"
}- 55+ venues
- US exchanges, dark pools, FINRA TRFs
- 32K+ tickers
- Active and delisted US tickers covered
- 23+ yrs history
- Nanosecond-timestamped tick data
- 100% volume
- US market volume coverage
Trusted by engineers at the world's most innovative companies
Build software. Train models. Power agents.
Software used to be the only consumer of market data. Now models train on it, agents query it, and pipelines replay it: humans, models, and agents all pulling the same raw, exact, machine-readable signal from one API.
Build software
Trading apps, portfolio tools, and risk dashboards. Query live and historical prices with a single REST call, or stream every tick as it prints.
Train models
Every tick since 2003, timestamped to the nanosecond: 350B+ events as a training corpus. Flat files for bulk loads and deterministic backtests.
Power agents
Agents query markets in plain REST, with no bespoke protocol to learn. And the Remote MCP server lets LLMs call Massive directly, no glue code required.
The entire US equities surface. One API.
Every trade, quote, bar, and snapshot the market emits, across 32,345+ active and delisted tickers, normalized into shapes you can build on.
// Custom bars: 1 × day candlesticks for AAPL. Swap in any// multiplier × timespan (5/minute, 4/hour, 1/week…){ "ticker": "AAPL", "adjusted": true, // split-adjusted (pass false for as-printed) "queryCount": 2, "resultsCount": 2, "results": [ { "o": 74.06, // Open "h": 75.15, // High "l": 73.7975, // Low "c": 75.0875, // Close "v": 135647456, // Volume "vw": 74.6099, // VWAP "n": 1, "t": 1577941200000 // Bar start (ms) }, { "o": 74.2875, "h": 75.145, "l": 74.125, "c": 74.3575, "v": 146535512, "vw": 74.7026, "n": 1, "t": 1578027600000 } ], "status": "OK"}candlesticks over time · any multiplier × timespan
The ticker universe
| Ticker | Name | Last | Chg % | Coverage | Trend |
|---|---|---|---|---|---|
| AAPL | Apple Inc. | 234.18 | +0.42% | 2003 → now | |
| NVDA | NVIDIA Corp | 128.33 | +1.12% | 2003 → now | |
| MSFT | Microsoft Corp | 512.90 | +0.18% | 2003 → now | |
| AMZN | Amazon.com Inc | 226.05 | +0.71% | 2003 → now | |
| TSLA | Tesla Inc | 341.60 | −2.31% | 2010 → now | |
| META | Meta Platforms | 744.12 | +0.95% | 2003 → now | |
| GOOGL | Alphabet Inc | 201.44 | +0.27% | 2003 → now | |
| SPY | SPDR S&P 500 ETF | 622.08 | +0.11% | 2003 → now | |
| TWTR | Twitter Inc | 53.70 | Delisted | 2013 → 2022 |
Every ticker ships with
// Ticker details{ "ticker": "AAPL", "name": "Apple Inc.", "market": "stocks", "locale": "us", "primary_exchange": "XNAS", "type": "CS", "active": true, "currency_name": "usd", "cik": "0000320193", "composite_figi": "BBG000B9XRY4", "share_class_figi": "BBG001S5N8V8", "market_cap": 2666630778840, "phone_number": "(408) 996-1010", "address": { "address1": "ONE APPLE PARK WAY", "city": "CUPERTINO", "state": "CA", "postal_code": "95014" }, "description": "Apple designs a wide variety of consumer electronic devices, including smartphones (iPhone), tablets (iPad), PCs (Mac), smartwatches (Apple Watch), and AirPods…", "sic_code": "3571", "sic_description": "ELECTRONIC COMPUTERS", "ticker_root": "AAPL", "homepage_url": "https://www.apple.com", "total_employees": 164000, "list_date": "1980-12-12", "branding": { "logo_url": "https://api.massive.com/v1/reference/company-branding/d3d3LmFwcGxlLmNvbQ/images/2023-05-01_logo.svg", "icon_url": "https://api.massive.com/v1/reference/company-branding/d3d3LmFwcGxlLmNvbQ/images/2023-05-01_icon.jpeg" }, "share_class_shares_outstanding": 15821950000, "weighted_shares_outstanding": 15821946000, "round_lot": 100}Apple Inc.
XNAS · CS · SIC 3571 “ELECTRONIC COMPUTERS”
- CIK
- 0000320193
- FIGI
- BBG000B9XRY4
- Listed
- 1980-12-12
- Round lot
- 100
- Mkt cap
- $2.67T
- Employees
- 164,000
- Shares out
- 15.82B
- HQ
- Cupertino, CA
plus branding: logo_url · icon_url, ready to render
Same data source. Multiple access methods.
Live streams, on-demand queries, bulk downloads, and agent tools. Same coverage, same accuracy. Mix freely; one API key works everywhere.
REST API
api.massive.com
Query anything on demand (ticks, bars, snapshots, reference, fundamentals, filings) as predictable JSON with cursor pagination. Every dataset on the page is one GET away.
{
"results": [{
"price": 234.18, "size": 100,
"sip_timestamp": 1784311200001304000
}],
"status": "OK", "next_url": "…cursor=YXA9…"
}- Response
- JSON
- Pagination
- Cursor
- Official SDKs
WebSockets
socket.massive.com
Every trade, quote, and aggregate pushed the moment it prints. Subscribe by symbol, by channel, or fire-hose the whole market on one connection.
- Delivery
- Real-time
- Channels
- T · Q · A
- Scope
- Whole market
Flat Files
files.massive.com
Daily gzipped CSV drops of the entire market: every trade and quote from every venue, one file per session, over any S3-compatible client. A year of ticks is one sync away.
- Format
- CSV.gz
- Cadence
- Daily
- Depth
- Full tape
MCP
mcp.massive.com
The full API surface as tools for AI agents. Use the first-party Claude Code and Codex plugins, or point any MCP client at the server. Your agent asks in English; the tape answers.
- Tools
- 60+
- Clients
- Any MCP
- Setup
- One URL
Same data source. Wildly different builds.
A Bloomberg alternative acquired by Wealthsimple, quant models that rebalance every morning, a live ticker wall on a university campus. Straight from X, the case studies, and the engineering blogs.
Not just another feed. A market data platform.
By SEC mandate, every US stock trade prints to one consolidated tape. Massive captures it at the source and owns every hop to the edge that answers your calls — infrastructure you can build a business on.
- 55+ US venues · 100% of US market volumeExchanges, dark pools, and FINRA TRFs. Every print flows to the SEC-mandated consolidated tape (the official record of the US stock market), with proprietary exchange feeds alongside it.SEC-mandated feeds+ prop feeds
- Massive · Equinix NY5 · NY3 · NY2Co-located with every major US matching engine over direct cross-connects: all four SIP streams plus proprietary Nasdaq, NYSE, and Cboe feeds. Never a third-party aggregator.direct fiber
- 01 · capture
Raw packets, straight off the wire
- 02 · parse
Rust parsers decode every protocol
- 03 · normalize
One schema across the full universe
- 04 · store
Every tick kept, nothing overwritten
- 05 · serve
Real-time, straight to your code
- Your applicationapi.massive.comGETWSSS3MCP
One unbroken chain: packet capture to delivery.
The platform underneath
Built to be built onRedundant networks
Independent paths from every venue into capture. No single fiber, switch, or carrier between the matching engine and your feed.
HA streaming
Clustered WebSocket delivery with automatic failover. Subscribe once and stay connected through node failures and deploys.
Massive datastore
A purpose-built tick store where corrections flow through and as-reported records are retained — nothing overwritten, ever.
Beyond the tape: license proprietary Nasdaq, NYSE, and Cboe feeds as Business-plan add-ons: same API, no separate integration. See Business plans →
- 1 trillion+
- Rows of data
- 2 petabytes
- Raw data
- 99.99%
- Uptime
- 70 million
- Messages/sec
Institutional-grade data. Zero red tape.
Nanosecond-exact data with commercial licensing built in — SLAs and dedicated support when you need them, and exchange expansions to layer on granular feeds without changing a line of code.
100% of the market, down to the nanosecond
Sequence numbers on every message, audit-grade history that never overwrites what the market actually said, and nanosecond timestamps from every clock a print touches. Watch the dive: one trading day → one minute → one second → the six prints inside a 2,533-nanosecond window.
One print · every clock
- Timestamp precision
- 1 ns
- Clocks
- Participant · SIP · TRF
- Every message
- Sequenced
- Conflation & sampling
- None
- As-reported history
- Kept
Complete volume & tick history
See market trends as they happen with complete volume from every US exchange (common stock, ETFs, and OTC tickers alike), then replay every trade and NBBO quote at nanosecond granularity after end-of-day.
Real-time streaming
Every trade, quote, and aggregate pushed over WebSockets the moment it prints. Subscribe by symbol, by channel, or to the whole market at once.
Decades of history
Our archive goes back over two decades, free of survivorship bias — delisted tickers keep their full history, so backtests see the market as it actually was.
Reference data
Comprehensive, accurate company reference data, standardized and essential for smart investment choices.
Extended hours coverage
Receive fair market value updates as frequently as once per second from 4AM–8PM ET, enabling your application to serve a global user base.
Unlimited API calls
Every paid plan lifts the meter entirely: no per-request pricing, no overage surprises, and no request budgeting baked into your architecture.
Self-serve from day one
Sign up, grab a key, and ship — individuals and businesses alike. No sales calls, no procurement cycle; upgrade in the dashboard when you outgrow a tier.
Enterprise-ready
SLAs and personalized support through dedicated Slack channels on enterprise plans, with transparent pricing and no hidden costs at every tier.
Shipping weekly. Loved daily.
Every improvement lands in a public changelog: new endpoints, deeper history, faster feeds. The developer love follows.
Recently shipped
Full changelog →- ImprovedMinute and second aggregates now cover the 4:15–5:00 PM ET index options curb session
- NewNew 8-K Disclosures and Disclosure Categories Endpoints (Open Beta)
- RemovedExperimental Financials VX Endpoint Sunset
- NewNew Form 3 and Form 4 Endpoints (Open Beta)
- NewNew 13-F Filings Endpoint (Open Beta)
What developers say
Cannot speak highly enough of the @massive_com service and support. Great team and great products :) #fintech #marketdata #stocks
I just want to say that the best platform for stock data BY FAR is @massive_com Complete satisfaction thank you!
@massive_com's API docs are beautiful. I can't seem to think of a better example of perfect documentation. Seriously impressed.
Shoutout to the @massive_com team for having really awesome interactive documentation! I love that the docs auto-generate an adjustable query string for you!
Wall Street's data was never theirs. It was always yours.
The consolidated tape used to cost six figures and a licensing desk. Now it starts at $0 — one plan set for every stage, from hobby projects to commercial licensing and enterprise redistribution.
What are you building?
Pick the shape closest to your project.
Eight common builds, one honest answer each. Pick yours and we'll point at the plan that fits, and say why.
Recommended for you
Basic
FreeforeverProve the idea before you spend a dollar. End-of-day prices and the full reference universe cover a weekend build — upgrade the moment it needs to move.
- End-of-day market data
- 5 API calls / min
- All tickers + reference data
Startup? We got you.
Qualifying startups can get 25% or more off their first year, with the largest reductions going to pre-launch companies. Email sales@massive.com with a description of your company, your intended use case, and your data requirements, and we'll set up a call.
25%+ · first yearWhy builders pick Massive
Built for the way modern teams actually ship.
Most market data vendors were built for trading desks twenty years ago. We rebuilt the stack for engineers who self-serve.
| Feature | Massive | Typical alternative |
|---|---|---|
Self-serve signup An engineer evaluating vendors should be reading docs, not waiting on a calendar invite. | Instant: free tier, no credit card | Sales call required for real-time |
Pricing model Your bill should scale with your business, not with how chatty your code happens to be. | Flat monthly tiers | Per-message / per-symbol metering |
Rate limits on paid plans A backtest reading two decades of bars shouldn’t require rate-limit math. | Unlimited API calls | Per-minute caps |
History depth A full market cycle is ~17 years. Anything less and your backtest misses 2008. | Tick-level trades & quotes back to 2003 | Often capped at 5–10 years |
Coverage of the US tape Off-exchange volume is 40%+ of the US tape. Missing it skews every analytic that touches volume. | 18 exchanges + dark pools + FINRA TRFs + OTC | SIP-only or single venue |
Flat file downloads Pulling a year of tick data should be a download, not a separate contract. | S3-compatible bulk files on Advanced | Add-on priced per GB |
WebSocket access Streaming is table stakes, not a premium add-on. | Every paid tier, delayed or real-time | Higher tiers only |
AI agent tooling Your agent calls market data as a native tool, not a brittle scraped endpoint. | Remote MCP server + Claude Code & Codex plugins | Varies by provider |
Official SDKs When the SDK breaks, you want to file the issue with the vendor, not a maintainer who left in 2022. | Python, JS, Go, Java/Kotlin | Often community-maintained |
Going customer-facing Commercial licensing should be a plan you pick, not a deal you survive. | Business plans: display & redistribution rights, feed add-ons | Quarter-long licensing negotiation |
Extend your data.
Partner datasets for breadth, auction imbalances and fundamentals for depth. And on Business plans, licensed proprietary feeds from Nasdaq, NYSE, and Cboe. Everything bolts onto the same subscription and the same unified API; we guide you through the exchange licensing.
Partner datasets
Individual & business licensing per datasetBenzinga
Real-time financial news and analyst ratings integrated into Massive's API for seamless access.
TMX
Corporate event calendar data from Canada's premier exchange, integrated into Massive's API.
ETF Global
Comprehensive ETF data and analytics integrated into Massive's API for easy implementation.
Plan expansions
Proprietary venue feeds attach to Business plans; explore them from the Enterprise plan cardNYSE Imbalances
Add-onStream auction buy vs sell pressure before market open & close.
Financials & Ratios
Add-onAdd income statements, balance sheets, cash flows, and ratios to any Stocks plan.
Questions, answered.
Is the data real-time?
Yes on the Advanced plan and on Business plans. Starter and Developer get 15-minute delayed data, which is enough for many research and dashboard use cases. The free tier is end-of-day.
Do you cover all US exchanges?
Yes: 18 major exchanges (full NYSE family, full Nasdaq family, Cboe BZX/BYX/EDGA/EDGX, IEX, MEMX, MIAX), plus the three FINRA TRFs and the OTC Reporting Facility. For NMS stocks that's 100% of the US tape.
What's the data latency?
Real-time data is processed at our Equinix NY5 co-location alongside the matching engines and pushed to your client the moment it prints.
Where does the data come from?
Direct from each exchange's feed plus the SIPs (CTA/UTP). We're licensed and we co-locate at the source.
What history is included?
Up to 20+ years on Advanced. Tick-level trades and quotes back to 2003, free of survivorship bias — delisted tickers stay in the universe with their full history. Corporate actions — splits, dividends, and IPOs — back to 2008.
Can I license proprietary exchange feeds?
Yes, on Business plans. Real-time proprietary feeds from Nasdaq (Nasdaq Basic), Cboe (EDGX and full-market), IEX, and NYSE auction imbalances are available as Business add-ons — individual plans are SIP-based end to end. We help you through the exchange licensing and deliver the feeds over the same API, with no separate integration.
What about commercial / redistribution use?
Individual plans (Basic → Advanced) are licensed for personal and non-professional use. For brokerage, redistribution, customer-facing display, or 200+ users, you'll need a Business plan. Talk to sales.
What languages do you support?
Official SDKs in Python, JavaScript/TypeScript, Go, and Kotlin/JVM. Plus REST works from anything that speaks HTTP.
Do you have AI agent tooling?
Yes. There's a Claude Code plugin, an OpenAI Codex plugin, and an MCP server. Connect any compatible agent to your market data.
How do I migrate from Polygon.io?
All Polygon.io endpoints continue to work as-is. Massive is the same platform under a new name. New SDKs auto-route to the new domain.
What about options, futures, forex, crypto, indices?
Same platform, separate plans. This page is focused on US stocks. See the asset-class-specific pages for the rest.
Start building with the market's raw signal.
Every trade, quote, and event from every US venue, one API key away.