Best Free Insider Data Tools for Investors

Alpha Vantage

Alpha Vantage is an API-first source for market and economic data. Developers, students, quants, and analysts can pull stocks, funds, FX, crypto, options, commodities, fundamentals, news, sentiment, and macro series with one key. The free quota is small, and commercial use needs separate licensing.

FinancialReports.eu

Financial Filings provides public-company filings through a free web index, APIs and a hosted MCP server. It supports document search, Markdown extraction, standardized financials, webhooks and enterprise data delivery.

Marketgenius

Marketgenius is a free stock-research site with global index heatmaps, superinvestor portfolios, a stock screener, company fundamentals, ownership data, valuation tools, dividends, short interest, and financial calculators. It is not a broker, terminal, portfolio tracker, or public API.

SentiSense

SentiSense is a beta AI market-intelligence and data API service for stock data, sentiment, news clusters, social signals, institutional flows, insider trades, congressional disclosures, and generated analysis. It supplies research signals, not brokerage or advice.

SEC.gov (EDGAR)

SEC.gov EDGAR is the official free source for U.S. company, fund, insider, and 13F filings, with full-text search, RSS, bulk archives, and public JSON APIs. It is the validation source for filings research, not a polished commercial terminal.

DATAROMA

DATAROMA is a focused tracker for superinvestor 13F portfolios, portfolio changes, and insider buying. It is handy for finding managers and ideas to investigate. Verify the filing date, position size, and current fundamentals before drawing a conclusion.

ORTEX

ORTEX combines short interest, securities lending, options flow, and trading-signal data for active investors, analysts, and data teams. Deeper web and API access sits behind paid tiers. It is a signal service, not a broker or portfolio ledger.

EODHD

EODHD supplies market data through REST, WebSocket, spreadsheet, and agent interfaces. Datasets cover prices, fundamentals, calendars, news, sentiment, options, foreign exchange, and crypto. The free quota is 20 calls per day, commercial use requires a B2B plan, and some datasets are separate marketplace products.

Yahoo Finance

Yahoo Finance covers quotes, charts, news, screens, earnings, analyst data, portfolios, watchlists, and basic research across stocks, funds, and crypto. Advanced history, exports, and data access depend on paid products or separate providers.

Alpha Spread

Alpha Spread combines DCF and relative-value estimates, stock reports, screens, alerts, analyst forecasts, watchlists, and a company-question assistant. Free use is metered weekly.

FT Markets (Markets data - Financial Times)

FT Markets brings Financial Times market data close to global equities, funds, ETFs, bonds, commodities, currencies, watchlists, portfolios, alerts, charts, and screens. It is useful for FT readers who want market tracking beside the newsroom. Market data is delayed by at least 15 minutes, and saving tools requires a free FT account.

Quiver Quantitative

Quiver Quantitative provides dashboards, screens, alerts, backtests, and APIs for political trades, insiders, institutions, lobbying, government contracts, patents, apps, ETFs, dark pools, and other alternative data. Web Premium and Quiver API are separate products, and the signals can be noisy or delayed.

WhaleWisdom

WhaleWisdom organizes institutional 13F, 13D/G, and other ownership filings into fund pages, holdings, changes, screens, alerts, and data exports. It is useful for studying disclosed institutional portfolios, but the filings are delayed and incomplete.

GuruFocus

GuruFocus combines global fundamentals, valuation, GF Score, GF Value, stock, ETF, and bond screens, backtests, guru and institutional holdings, insider trades, portfolios, spreadsheet add-ins, and APIs. It is built for fundamental and value research, not brokerage execution.

Unusual Whales

Unusual Whales tracks options flow, dark pools, congressional trades, insider activity, market data, alerts, screeners, and social sentiment. It is built for active traders and alternative-data research, not a broker, portfolio ledger, or guarantee that unusual activity predicts returns.

CapEdge

CapEdge combines SEC filings, transcripts, financials, ownership data, IPO tracking, ETF exposure, and short-interest data. It is free, but some tables require an account.

OpenInsider

OpenInsider is a free SEC Form 4 screener for insider buying, selling, cluster buys, and transaction reports. It is useful for quick table-based research, but there is no formal support SLA, mobile app, or documented public API.

ChartMill

ChartMill is a browser screener and charting service for U.S., Canadian, and European stocks and some ETFs. It supports technical and fundamental screens, swing-trading ideas, watchlists, alerts, dashboards, ratings, and strategy templates. It is still a research tool, not a broker or full portfolio ledger.

Delta by eToro

Delta by eToro is a read-only tracker for stocks, ETFs, funds, crypto, NFTs, forex, commodities, indices, brokers, exchanges, and wallets. Use it to see several accounts in one place. It adds visibility, not another trading venue.

Stockcircle

Stockcircle combines company data with institutional holdings, insider transactions, and U.S. Congress disclosures. It is a research site, not a broker, portfolio-accounting system, or professional data terminal.

Tickertape

Tickertape is an India-first web and mobile research app for stocks, funds, ETFs, screens, portfolios, alerts, events, forecasts, and broker-linked holdings. Free covers the core workflow; Pro adds custom screens, exports, historical sentiment, alerts, forecasts, and multi-account tools. It is not a global terminal or raw API.

Tracefour

Tracefour provides free insider-trade heatmaps, filing email alerts, and a read-only API covering U.S. filings, selected European director dealings, and U.S. Congress disclosures.

Value Sense

Value Sense combines stock fundamentals, valuation models, screens, historical tests, earnings analysis, insider transactions, and 13F holdings. Plan limits determine history, downloads, AI usage, and saved workspaces.

TipRanks

TipRanks combines analyst ratings, targets, expert rankings, Smart Score, AI analysis, news sentiment, insider signals, hedge-fund activity, and portfolios. It is useful for comparing market views quickly, with Premium and Ultimate adding deeper expert, portfolio, export, and AI tools.

Google Finance

Google Finance provides quotes, charts, financial news, watchlists, portfolios, earnings context, and AI-assisted research for signed-in users. It supports market monitoring, not brokerage execution or professional data feeds.

SEC EDGAR - Company Filings (Full‑Text Search & Search Filings)

SEC EDGAR is the free public source for company, fund, insider, ownership, prospectus, and XBRL filings submitted to the SEC. It has full-text search, latest filings, RSS, CIK lookup, public JSON APIs, archives, and bulk files. Most filings still need parsing before comparison or analysis.

CEO Watcher

CEO Watcher organizes US insider transactions by historical forward returns, win rates, trade patterns, and filing context. A free weekly newsletter covers selected trades; paid access adds search, feeds, Discord, alerts, and a daily pre-market email.

MarketWatch

MarketWatch combines Dow Jones financial news with quotes, watchlists, screens, calendars, BigCharts, options chains, fund research, rates, newsletters, and Virtual Stock Exchange. It is a consumer market site, not a broker, professional terminal, API, or modeling system; delays and subscription boundaries still apply.

SecForm4.Com

SecForm4.com tracks Forms 3, 4, and 5, 13D/G, and 13F filings from EDGAR. Use it to find insider and ownership activity, then check the filing, issuer, and current position yourself. It is not a broker, global insider database, portfolio tracker, or buy/sell signal.

AlphaResearch

AlphaResearch puts filings, transcripts, press releases, estimates, news, insider trades, ownership, and fund holdings in one searchable workspace. It is aimed at document-heavy research. Global coverage and spreadsheet add-ins require Enterprise, and the premium trial asks for a card.

AUM 13F

AUM 13F is a low-cost filing research app for asset managers, institutional holdings, private funds, real-estate managers, and LP relationships. It brings together AUM, 13F holdings, EDGAR, IAPD, CAFR-sourced portfolios, source links, and alerts. The underlying filings are still delayed and incomplete.

Börsdata

Börsdata gives investors long-history Nordic fundamentals, ratios, screens, ownership, insider and short-selling data, technical charts, reports, watchlists, calendars, and spreadsheet or API access. It is strongest for Nordic equities. Global data, holdings, Excel or Sheets workflows, and the REST API depend on the plan.

Business Quant

Business Quant covers U.S. company fundamentals, operating KPIs, segment data, analyst estimates, institutional ownership, and insider trades. It is useful when company-specific operating measures matter alongside standard financial statements. The free plan limits KPI history and API usage, while paid plans increase history and usage allowances.

CEO.CA

CEO.CA combines Canadian small-cap chat rooms with market data for TSX, TSXV, and CSE issuers. It offers watchlists, news, SEDI insider filings, private placements, mobile access, and paid Level II depth. Community posts are leads, not research, and Pro pricing varies by exchange coverage.

Changeflow (Trackly)

Changeflow, formerly Trackly, monitors web pages, PDFs, feeds, and API endpoints. It summarizes detected changes for review. It does not supply market prices or execute trades.

Insider Monitor

Insider Monitor is a free U.S. reference site for Forms 3, 4, and 5, insider buys and sells, cluster buys, and top-buying lists. It is a quick prompt for checking recent activity and then opening the SEC filing. Reporting lags the trade, and the site does not advertise alerts, exports, or an API.

Insider Screener

Insider Screener standardizes director and insider transactions across several markets, with screens, saved stocks, exports, alerts, and a separate REST API. It is an insider-signal layer for research, not a complete thesis, broker, portfolio ledger, or unrestricted bulk feed.

MarketBeat

Stock research combining analyst consensus, screeners, company events, news, and watchlists, with paid All Access filters and portfolio tools.

MarketScreener

MarketScreener combines global quotes, news, watchlists, screens, charts, calendars, analyst data, financials, transcripts, ESG data, insider data, newsletters, and published portfolios. Several screens, reports, and portfolios require a paid plan.

MoatMap

MoatMap combines daily Quality, Value, and Momentum scores with AI reports, insider filings, portfolio analysis, macro regimes, Top Picks, and investor lenses. Premium actions consume one-time Feather credits. Its market data and AI output still need source checks.