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The Supplemental API extends the Aries platform with extra data and analytics: options chains, stock aggregates, company profiles, stock alternative data (transcripts, ESG, lobbying, etc.), calendars, and fundamentals. Use these endpoints for research, screening, and enriched market data alongside the Core API.
Core vs. Supplemental — which do you need? The Core API powers essential trading functionality such as retrieving balances and positions, placing orders, and streaming market data. The Supplemental API provides additional market intelligence, including company financials, earnings calendars, news, sentiment, technical patterns, and alternative datasets. Many production trading applications use both APIs together to deliver a more comprehensive trading experience.
Base URL: https://api.aries.com

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Find what you need

Options

Options expiry, contracts, snapshots, quotes, and activity.

Stocks

Stock aggregates, snapshots, and quotes.

Stock Alternative

Transcripts, earnings-call live, presentation, ESG, social sentiment, supply chain, lobbying, USA spending, congressional trading, bank branch, and more.

Analytics

Equity and options analytics, screeners, ratings.

Company & fundamentals

Company profile, financials, ownership, filings.

Calendar

Economics, earnings, conference calls, M&A.

Core API

Users, accounts, orders, market data, watchlist, chart.

Streaming

WebSockets for real-time market and account data.

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