Some links may be affiliate links; we may earn a commission at no cost to you. Details. Data verified 2026-10-15 from official pages; “unknown” means we could not verify it.

Changelog

2026-10-15 — Baseline

Initial dataset: 17 vendors (Massive (formerly Polygon), Databento, Alpaca, Tiingo, Financial Modeling Prep, EODHD, Alpha Vantage, Finnhub, ThetaData, Twelve Data, Intrinio, IBKR API (Interactive Brokers), Tradier, Tradovate, SEC EDGAR (free), Kalshi API, Polymarket API) verified from official pricing/docs pages. Future entries are generated from scripts/check_changes.