At Massive, we're on a mission to modernize the financial industry. We believe that the industry runs on old technology, and we're here to change that.
By developers for developers
from massive import RESTClient
client = RESTClient("API_KEY")
aggs = []
for a in client.list_aggs(
"AAPL",
1,
"minute",
"2022-01-01",
"2023-02-03",
limit=50000,
):
aggs.append(a)
print(aggs)Intuitive and easy-to-use
Our S3 interface lets you access our flat files easily and seamlessly. With just a few clicks, you'll have the data you need to power your applications.
Our Restful and WebSocket APIs provide flexible and powerful options for accessing our data. Whether you need real-time or historical data, we've got you covered.
Our SQL Query option lets you harness the power of SQL to access our data. With this flexible and intuitive option, you can easily customize queries to fit your needs.
We're committed to providing fair access to the financial markets for everyone, not just the big players on Wall Street. Access the same institutional-level data used by major trading firms.
Direct from the source
We're located in the datacenter with direct fiber cross-connects to the exchanges. We own the entire infrastructure so we can ensure quality at each step in the pipeline.
Direct connectivity means faster updates, fewer points of failure, and accurate market data you can depend on for your applications.
About Massive →Major Exchanges
Co-located in exchange datacenters
Real-time market data
Use your AI tools
I want to work with financial market data. Read massive.com/docs/llms.txt to see what Massive covers, then help me get started.Paste into Claude Code, Cursor, ChatGPT, Codex, Copilot, Gemini CLI, or Claude Desktop.
One instruction works in Claude Code, Cursor, ChatGPT, Codex, Copilot, Gemini, or Claude Desktop. No new workflow, no per-client setup.
Trading tools, research agents, dashboards. Your agent handles the data layer, so you go from prompt to a working idea.
Depending on your plan: tick-level trades, quotes, and aggregate bars. Recency from end-of-day to real-time, up to 20+ years of history.
Built with Massive
We had no idea the landscape around market data was so complex. Massive did the best job at simplifying the entire process.
Massive has been amazing to work with, and has allowed Fool.com to display US Equities data through their intuitive, easy to use APIs.
Massive APIs have set the standard for easy access to financial market data, and have proven to be extremely robust and reliable over the course of our partnership.
Everything you need
API first approach
Accurate, fast, and reliable
Extensive documentation
Financial data platform
Institutional grade data
Simple pricing
Discover the power of a market data platform that breaks down barriers and levels the playing field.
Massive's new Insider Holdings and Insider Activity endpoints turn SEC Form 3, 4, and 5 filings into each insider's current stake and each company's daily net insider buying and selling, so you can screen every U.S. company for insider activity with a single API call.
editor
Massive US stock data is now available to AI agents via x402. Pay per request in USDC on agent.massive.com, with no account or API key. Built with Coinbase.
editor
Starting August 17, 2026, Cboe's Options Exchange is extending trading hours for select single-stock equity options with a morning GTH session (7:30–9:25 am ET) and Curb session (4:00–4:15 pm ET).
cole
