Taiwan market data API infrastructure

A Taiwan stock market data source built for AI agents, quantitative research, and automated systems.

TW Market Data turns official data from TWSE, TPEx, MOPS, and TAIFEX into a consistent, easy-to-integrate REST API. We ingest and parse every dataset directly from the official sources — never second-hand.

Every response carries its source and knowledge_date; gaps are marked honestly, and holes are never filled with estimates.

What you can access

Daily prices for individual TWSE-listed stocks go back to 2004, and we keep the full price history of 311 stocks that have stopped trading (delisted / long-term suspended), so backtests aren't inflated by survivorship bias. Currently available:

TWSE daily prices — Daily OHLCV for individual TWSE-listed stocks, including stocks that have stopped trading, from 2004.
Monthly revenue — Monthly revenue with YoY/MoM, from 2010 — the monthly-frequency fundamentals unique to Taiwan equities.
Financial statements — Income statement, balance sheet, and cash flow statement.
Institutional investors — Daily net buy/sell by foreign investors, investment trusts, and dealers, per stock. US 13F filings lag 45 days; here it is daily.
Valuation metrics — P/E, P/B, and dividend yield, daily.
Technical indicators — Common technical indicators, daily.
Margin trading & short selling — Daily margin and short balances.
Material announcements — Material information and announcements from TWSE- and TPEx-listed companies.

TPEx daily bars and adjusted prices are currently in beta, with coverage marked per dataset.

Data format

Structured JSON — Consistent field naming — every endpoint integrates the same way.
Standardized — Accounting line items map to one taxonomy, so different companies and periods compare directly.
Original values preserved — The company's originally reported figures and labels are also provided, with no speculative adjustments.
Traceable — Every record carries its source and knowledge_date, supporting point-in-time replay.

Who it's for

AI financial agents and LLM pipelines that need data to feed on
Quantitative research and factor development
Backtesting and automated trading systems
The internal data layer of fintech products

Design principles

Official first-party sources only — Wired directly to TWSE/TPEx/MOPS/TAIFEX, with no second-hand intermediaries.
Transparent coverage — Every dataset clearly states its coverage period, source, and limits — no pretending everything is available.
No look-ahead — knowledge_date is preserved, so backtests see only the data known at the time.
Built for machines — Optimized for programmatic calls, not for human web browsing.

Ready to go? → Quick start

Data sources and licensing

Part of the data in this service is obtained from the Government Open Data Platform (data.gov.tw) and used under the Open Government Data License, version 1.0. Providing agencies: Taiwan Stock Exchange, Taipei Exchange, Taiwan Futures Exchange, Taiwan Depository & Clearing Corporation, National Development Council, Central Bank of the Republic of China (Taiwan), Department of Statistics of the Ministry of Economic Affairs, and Customs Administration of the Ministry of Finance. The value-added processing, derived calculations and presentation in this service are the responsibility of TWMD and are not associated with the providing agencies.

Global macro series are obtained from World Bank open data and used under the Creative Commons Attribution 4.0 International licence (CC BY 4.0).

Open Government Data License, version 1.0 (Taiwan)

Building an AI agent? Start with /llms.txt for the full site index.

Overview