Data Sources

Where Our Data Comes From

The Stock Radar’s analytical pipeline aggregates data from over 20 distinct sources across the US, Korean, Japanese, and Taiwanese financial markets. Every data point used in our articles is traceable to one or more of the following providers. We prioritize official primary sources whenever available, supplemented by reputable secondary data vendors and licensed APIs.

Market Data & Pricing

• Yahoo Finance — Real-time and historical OHLCV (Open/High/Low/Close/Volume) data for global equities, indices, currencies, and commodities. Source for US (NYSE, NASDAQ), Korea (KOSPI, KOSDAQ), Japan (TSE), and Taiwan (TWSE, TPEx) ticker pricing.
• Finnhub — Analyst ratings consensus, insider transactions, earnings surprises, and company financial metrics for US-listed equities.
• Finviz — Snapshot data for analyst price targets, institutional ownership, insider ownership, and short interest on US equities.
• FRED (Federal Reserve Economic Data) — US macroeconomic indicators (interest rates, CPI, employment, GDP) and Japan macro snapshot (BOJ policy rate, JGB 10Y yield, USD/JPY, CPI YoY).
• EIA (US Energy Information Administration) — Energy market data including crude oil prices (WTI, Brent), inventory reports, and refined product data used in sector analysis.

Corporate Filings & Disclosures

• SEC EDGAR — US public company filings (10-K, 10-Q, 8-K, S-1, proxy statements). Used for fundamental analysis and breaking news on material events.
• DART (Korea Financial Supervisory Service) — Korean public company disclosures, scanned for material events affecting KOSPI and KOSDAQ tickers.
• EDINET (Japan FSA) — Japanese securities reports, used for fundamental analysis of TSE-listed companies.
• MOPS (Taiwan Public Information Observatory) — Taiwanese listed company disclosures and financial statements for TWSE and TPEx tickers.
• TDnet (Tokyo Stock Exchange) — Real-time material disclosure feed monitored for breaking events.

News & Catalyst Sources

• Reuters — Wire service for global market news, geopolitical events, and corporate actions.
• Bloomberg — Financial news referenced for major market-moving events.
• Korea — Hankyung (한경), Maeil Business (매경), Edaily (이데일리), Infomax (인포맥스), Naver Finance.
• Japan — Yahoo Finance Japan, Kabutan (株探), Nikkei, Minkabu (みんかぶ), Traders Web.
• Taiwan — Yahoo Finance TW, Goodinfo!, MoneyDJ, CMoney, HiStock, Industrial & Commercial Times, Economic Daily.

Reference & Metadata

• Wikidata — Company metadata (founding year, headquarters, CEO, employee count, official website) used to enrich analysis with verified reference data.
• TradingView — Embedded interactive charts (mini-symbol-overview widgets) for visual price context. Chart data sourced from TradingView feeds.
• Pexels — Stock photography for illustrative imagery on trust pages and category headers (CC-BY licensed).

Data Freshness & Update Frequency

Real-time price data refreshes every 15 minutes during market hours through automated scanner cycles. Corporate filing data is checked every 15 minutes via DART, EDINET, MOPS, and TDnet polling. Macro indicators (FRED, EIA) refresh daily during US business hours. Static reference data (Wikidata, exchange master files) refreshes weekly. Each article displays its publication timestamp; the data underlying that article reflects the state of the markets at that moment.

Source Limitations & Caveats

All data sources have limitations. Yahoo Finance pricing may have a 15-minute delay during market hours. Finnhub free-tier rate limits cap intraday update frequency. Reuters and Bloomberg headlines are referenced; we do not republish full text. Wikidata company info is community-maintained and may lag corporate changes. We disclose source-level uncertainty inline within articles when material.

Questions About Our Data?

If you have questions about a specific data point in any of our articles, or want to suggest an additional source we should incorporate, please reach out via Contact.