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Massive

By Massive Finance

US options and equities market data: historical option contract pricing and OHLC bars, the full options reference catalogue, stock aggregates and previous closes, ticker reference data, company news and market status.

Available tools

Build Option Ticker (OCC Symbol)

Build a correctly formatted OCC option symbol from an underlying, expiry, type and strike. Runs locally with no API call. ALWAYS use this instead of hand-writing option tickers - the strike padding is error-prone and a malformed symbol returns empty results with no error.

Get Market Holidays

Get upcoming US market holidays and early closes.

Get Market Status

Get the current market status: whether equities and options markets are open, in early hours, or in after hours. Check this before describing any price as live.

Get Option Aggregates (OHLC Bars)

Get historical OHLCV bars for an option contract over a custom date range and interval. Note that bars only exist for intervals where qualifying trades occurred, so illiquid contracts have gaps.

Get Option Contract Details

Get reference details for one option contract: strike, expiry, contract type, exercise style, shares per contract and primary exchange.

Get Option Daily Open/Close

Get the open, high, low and close for an option contract on a specific date.

Get Option Previous Close

Get the previous trading day's OHLCV bar for an option contract.

Get Stock Aggregates (OHLC Bars)

Get historical OHLCV bars for a stock over a custom date range and interval. Use this for charting and for establishing the underlying price history behind an options analysis.

Get Stock Previous Close

Get the previous trading day's OHLCV bar for a stock.

Get Ticker Details

Get reference details for a ticker: company name, description, market cap, shares outstanding, SIC industry description, homepage and branding.

Get Ticker News

Get recent news articles for a ticker, including publisher, description and sentiment insights where available.

List Option Contracts

List option contracts from the reference catalogue for an underlying. Returns contract metadata (strike, expiry, type, exercise style) but NO pricing, Greeks or open interest - use get_option_chain for those.

Search Tickers

Search for tickers by name or symbol across stocks, options, indices, crypto and FX. Use this when the user names a company but not its ticker.

How it works

1. Install

One-click install from the Simtheory store.

2. Connect

Authorize access to your Massive account.

3. Use

Your AI can now interact with Massive.

Install

Log in if you already have an account.

Details

Version 1.0.0
Updated Aug 19, 2026
Category Finance
Publisher Massive

Features

Cloud hosted — no setup required
Secure authentication
Automatic updates
Works with all AI models

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