ReferenceChangelog

Changelog

v1.3 — March 16, 2026

Added

Dividend History API — New endpoint GET /v1/stocks/:symbol/dividends providing historical dividend payments, ex-dates, and amounts.

v1.2 — March 11, 2026

Added

Enriched Company Metadata — Added marketCap, shares, floatingShares, industry, address, email, and telephone to the stock detail response.

v1.1 — March 9, 2026

Added

WebSocket streaming — Subscribe to live GSE market data over a persistent Socket.IO connection. See WebSocket Streaming for details.

Channel	Description
`market:snapshot`	Live gainers, losers, and market breadth (30 s push)
`quote:<SYMBOL>`	Full price snapshot for one stock (20 s push)
`ticks:<SYMBOL>`	Intraday tick stream for one stock (15 s push)

v1.0 — March 1, 2026

Initial public release of the GSE Data API.

Endpoints added

Endpoint	Description
`GET /v1/market/snapshot`	Market gainers, losers, breadth
`GET /v1/market/sectors`	Sector performance breakdown
`GET /v1/stocks`	All active GSE stocks
`GET /v1/stocks/search`	Search by symbol or name
`GET /v1/stocks/:symbol`	Stock detail + company profile
`GET /v1/stocks/:symbol/history`	Daily OHLCV history
`GET /v1/stocks/:symbol/ticks`	Intraday tick data
`GET /v1/stocks/:symbol/news`	Stock-matched news
`GET /v1/news`	All GSE news

Features

API key authentication via X-API-Key header
Redis-backed sliding-window rate limiting (per-minute + per-day)
Free tier: 20 req/min · 500 req/day
Pro tier: 200 req/min · 50,000 req/day
Standard { data, meta } response envelope
Informational rate limit headers on every response
Self-serve key management in the Developer Portal

Previous

WebSocket Streaming