Every number, traceable
Last updated: May 27, 2026 · A complete reference for the providers behind every Finapolis number. If we can't trace a figure to a primary source, we don't show it, and this page tells you exactly which source each one came from.
Multiple sources, cross-validated
We don't rely on a single feed. Each provider specializes in a different slice of the market: prices, fundamentals, filings, and macro. Our pipeline cross-references claims across them before they reach you. A revenue figure pulled from a 10-K is benchmarked against the earnings transcript and consensus before it lands in the Analyzer.
Every data point keeps a permanent link to its origin: the provider, the timestamp, and the version. That auditable record is what lets you check our work, not just trust it.
All data is licensed and used in compliance with provider terms.
Provider details
Polygon.io
Market data and news
- Coverage
- US stocks, options, forex, crypto markets
- Data types
- Tick-level data, aggregates, news feeds, market sentiment, insider transactions
- Update frequency
- Real-time streaming, millisecond-level precision
- Primary use
- Screener and Trader modules, real-time pricing, order execution context, news integration
- Attribution required
- Yes. Data provided by Polygon.io
Tiingo
Fundamentals and historical data
- Coverage
- US and international equities, ETFs, mutual funds, 30+ years of history
- Data types
- End-of-day prices, fundamentals, financial statements, dividends and splits
- Update frequency
- Daily (end-of-day prices), quarterly (fundamentals)
- Primary use
- Analyzer and Reporter modules: fundamental analysis, valuation, historical performance
- Attribution required
- Yes. Data provided by Tiingo
FRED
Federal Reserve Economic Data
- Coverage
- Macroeconomic series from 100+ international sources, curated by the Federal Reserve Bank of St. Louis
- Data types
- GDP, inflation, unemployment, interest rates, monetary aggregates, sector indices
- Update frequency
- Per-series cadence (daily / weekly / monthly / quarterly)
- Primary use
- Market Commentary, macro context for portfolio analysis
- Attribution required
- Yes. Data provided by FRED (Federal Reserve Bank of St. Louis)
SEC EDGAR API
Regulatory filings and disclosures
- Coverage
- All SEC-registered US public companies, 10+ years of filings history
- Data types
- 10-K, 10-Q, 8-K filings, proxy statements, insider transactions, ownership data
- Update frequency
- Continuous as filings are submitted to EDGAR
- Primary use
- Reporter module fundamental data, fact-checking, audit trail for every figure
- Attribution required
- Yes. Data sourced from SEC EDGAR
Attribution and compliance
Legal requirements
All data displayed on Finapolis is provided under license from third-party providers. Each provider requires specific attribution, which we display wherever their data is used.
These attributions appear:
- On every page that displays provider data
- In data exports and reports
- In API responses
- On this data sources reference page
Data usage and limitations
Understanding the limits of financial data is part of using it well. A few things to keep in mind:
- Accuracy. We source data from established providers, but no feed is guaranteed to be 100% accurate. Verify anything critical before you act on it.
- Timeliness. Market data is available in real time. Fundamental and reference data updates on a daily or quarterly cadence, depending on the source.
- Redistribution. Data obtained through Finapolis may not be redistributed, resold, or used commercially outside the platform without permission from the original provider.
- Generated insights. Napoli, our research assistant, can use provider data to generate insights. Those are interpretations, not financial advice.