Tagging 8-K disclosures with AI: corporate events, labelled by what actually happened
A SEC 8-K API that labels what actually happened. Query filings by event type (CEO departures, cybersecurity incidents, M&A), with source-cited tags.
rian
Posts in release-notes
More posts in release-notes
Futures Data Has Arrived
Massive’s Futures APIs are now generally available, providing real-time and historical market data for top U.S. futures (ES, GC, CL) from CME, CBOT, COMEX, and NYMEX, accessible via REST API, Websocket, and flat files.
editor
Build a NYSE Order Imbalance Tracker with Massive's WebSocket API
Massive's NOI WebSocket channel streams NYSE Net Order Imbalance data in real time, including imbalance quantity, paired shares, and the indicative clearing price.
cole
Build a Real-Time Dark Pool Scanner with Massive's Websocket API
In this tutorial, you'll build a terminal-based dark pool scanner in Python and under 150 lines of code that streams real-time stock trades from Massive's API.
cole
What a decade of credit card data says about Amazon's busiest days
Massive has launched two new alternative data endpoints surrounding European consumer spending data.
rian
Query Market, Fundamental, and Alternative Data across financial markets with the updated Massive MCP server
The Massive MCP server rewrite collapses everything into 4 composable tools with 11 parameters, cutting context overhead by over 90%. The server also ships with built-in financial functions: Black-Scholes Greeks, Sharpe/Sortino ratios, & moving averages.
alexnovotny
Announcing the Massive Labor Market API
Key Federal Reserve labor market indicators: unemployment rate, labor force participation, average hourly earnings, and job openings are now accessible through a simple, unified API.
cole
SEC Filings & Disclosures: AI-Ready Data, Structured Risk Factors, and Filing Search
Massive has five new endpoints (currently in beta, open to all account types) for working with SEC filings programmatically.
rian
Build a Real-Time Financial News and Analyst Intelligence Dashboard with Massive + Benzinga
Massive has partnered with Benzinga to bring real-time financial news, analyst ratings, earnings data, and more directly into the Massive API.
alexnovotny
Massive Launches New Splits and Dividends Endpoints
Two new endpoints, splits and dividends, help developers using Massive get access to accurate adjusted pricing data across thousands of tickers
editor
Find Massive Options Trades with Massive.com
In this tutorial, you’ll build a small terminal “scanner” that streams every US options trade in real time and prints a clean summary only when the trade’s premium is large enough to matter.
cole
Build on Massive.com with llms.txt
Massive has added llms.txt support to its API docs, allowing AI assistants to fetch structured markdown directly and skip manual HTML copying. Following the llms.txt spec, similar to robots.txt but for AI accessibility, it provides predictable URLs for easy parsing.
rian
Build a Corporate Events Calendar using Massive + TMX Wall Street Horizon
Massive has partnered with TMX Wall Street Horizon to bring corporate events data directly into the Massive API. The TMX Corporate Events endpoint provides normalized, daily-updated insight into thousands of tickers going back to 2018, all accessible through Massive’s API.
alexnovotny
Announcing Massive + ETF Global® Partnership: Constituents, Fund Flows, Analytics, Profiles, and Taxonomies
TL;DR — Massive has partnered with ETF Global® to bring institutional-grade ETF data directly into the Massive API. With five new endpoints covering constituents, fund flows, proprietary analytics, profiles, and taxonomies, developers get normalized, daily-updated insight into ETF holdings, capital movements, risk/reward metrics, and classifications across 3,000+ global ETFs—all accessible through streamlined API calls with flexible add-on subscriptions. Accessing comprehensive and normalized E
alexnovotny
Build an Iron Condor Screener with Massive
In this demo, we’ll showcase a small Python utility that screens for iron condors on SPY (or any highly liquid symbol) using Massive’s options API.
alexnovotny
Polygon.io is Now Massive
Polygon.io is now Massive.com. The rebrand reflects our focus on scale, reliability, and continued innovation. Your APIs, accounts, and integrations continue to work without interruption.
editor
Upcoming Changes to Bid and Ask Sizes in Stocks Quotes
Effective Nov 3, 2025, bid_size/ask_size will be reported in shares (not round lots) across Stocks Quotes REST API, WebSocket, and Flat Files, per SEC MDI rules. The rule is forward-looking and we’ll also backfill history for consistency. Most users need no changes.
editor
Announcing Massive Financials: Balance Sheets, Cash Flow, Income Statements — and Ratios
There are four new fundamentals endpoints, one daily-refreshed ratios feed, and a developer experience designed for screens, research, and automated reporting.
alexnovotny
Build a 0-DTE Covered Call Screener for SPY with Massive
In this demo, we’ll build a small Python utility that pulls only the option contracts you’d consider for a covered call expiring today (0-DTE) on SPY. Along the way, we’ll explain not just what to do, but why each step matters—especially if you’re new to options or market data. Who this is for: developers comfortable with Python who want to automate an options workflow—even if you’re still learning options. You must have an Massive Options Advanced plan for this demo to work properly. What
alexnovotny
Benzinga Data Now Available on Massive.com
Massive is excited to announce a new partnership with Benzinga, significantly enhancing our financial data offerings. Benzinga’s detailed analyst ratings, corporate guidance, earnings reports, and structured financial news are now available through Massive’s REST APIs.
editor
Release Notes - June 2025
New APIs for short interest, short volume, and treasury yields. Benzinga data now available via expansion packs. Flat Files docs improved for easier access.
editor
Release Notes - September 2024
Explore the latest enhancements and tutorials in our September 2024 release notes, featuring new data center operations, advanced API functionalities, and comprehensive educational content designed to elevate your experience with Massive.com.
editor
Release Notes - April 2024
Massive.com enhances platform capabilities with the launch of Flat Files now included with paid plans at no extra charge, significant progress on the Chicago data center, new integrations with everviz and QuantConnect, and valuable tutorials for using Flat Files and managing data streams efficiently.
editor
Release Notes - December 2023
We introduce enhanced WebSocket API features, expanded crypto offerings, improved data latency, Slack integration for system monitoring, along with insightful case studies and practical tutorials.
editor
Release Notes - September 2023
We've introduced historical second aggregates based on user feedback, and enhanced our system monitoring to ensure you're always updated in real time.
editor