Best Free AI Research Tools for Investors

Unusual Whales

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Unusual Whales is an options-flow and market-activity platform for traders who want real-time U.S. options trades, dark pool/off-exchange activity, alerts, screeners, news, congressional trading data, and developer API access. It is strongest for alert-driven options and order-flow research, with portfolio tracking, API, WebSocket streaming, and historical full-market options data handled through separate paid surfaces.

13F Insight

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13F Insight is an SEC-filings intelligence platform for investors who want to track institutional 13F holdings, Form 4 insider trades, 13D/G ownership, watchlists, smart-money alerts, and AI answers grounded in filing citations. It is strongest for hedge-fund and institutional-ownership research, but 13F filings are delayed by design and AI summaries should be checked against the underlying SEC documents.

Alpha Spread

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Alpha Spread is a value-investing research platform for investors who want quick intrinsic value estimates, DCF and relative valuation, stock reports, screeners, watchlists, alerts, analyst forecasts, and AI-assisted company questions. It is strongest for first-pass fair-value research, but free usage is metered weekly and automated valuation outputs should be reviewed as assumptions, not final investment decisions.

AlphaResearch

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AlphaResearch is an AI-powered stock research platform for searching filings, transcripts, press releases, reports, notes, fundamentals, estimates, news, insider transactions, institutional ownership, and fund holdings. It is useful for document-heavy research and collaboration, but global coverage and spreadsheet add-ins are Enterprise features and the premium trial requires a credit card.

Berkshire Hathaway Archive (Memorex)

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Berkshire Hathaway Archive by Memorex is a free searchable document archive for Warren Buffett shareholder letters and Berkshire Hathaway annual meeting transcripts. It is strongest for value investors, students, and researchers who want semantic search across Berkshire source material on capital allocation, incentives, moats, management, insurance, and long-term investing, but it is a single-company archive rather than a market-data product or general transcript database.

CatalystWire

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CatalystWire is a UK-focused RNS catalyst scanner for event-driven investors who want real-time London Stock Exchange announcement monitoring, AI-powered semantic search, categorization, and instant alerts. It is strongest for finding market-moving UK announcements such as management changes, turnarounds, and other catalyst categories inside RNS flow, but public pages do not show self-serve pricing or a documented API.

Changeflow (Trackly)

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Changeflow, formerly reached through Trackly, is an AI website-change intelligence platform for monitoring filings, regulator pages, IR pages, competitor pages, PDFs, feeds, and other online sources. It is useful for investment and compliance teams that want relevant briefings rather than raw page diffs, but it is not market data, trade execution, or a substitute for human review.

Delta by eToro

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Delta by eToro is a multi-asset portfolio tracker for stocks, ETFs, funds, crypto, NFTs, forex, commodities, indices, brokers, exchanges, and wallets. It is useful when you want one read-only portfolio view across accounts and asset classes rather than another place to trade.

Earnings Hub

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Earnings Hub is a web and mobile earnings-season workspace for calendars, call access, transcripts, AI summaries, filing summaries, alerts, estimates, and watchlist monitoring. It is useful when your workflow starts with upcoming reports and earnings calls rather than broad valuation screens.

EPSMomentum

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EPSMomentum is a U.S. stock and ETF analytics platform for earnings momentum, estimate revisions, PEAD drift, timing signals, scanners, AI analysis, and market dashboards. It is useful when earnings acceleration and entry-timing discipline are central to your research process.

EveryTicker

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EveryTicker is a free U.S. stock research platform focused on undercovered public companies, including microcaps, nanocaps, and OTC names. It supports fundamental reports, AI and traditional screening, watchlists, 13F ownership context, and investment-theme discovery before doing deeper diligence.

FactorsToday

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FactorsToday is a quantitative factor-investing platform with dashboards, screeners, portfolio factor analysis, attribution, hedge construction, factor portfolio building, downloads, and an open REST API. It is useful when you need factor exposure workflows without building every model and endpoint yourself.

FinancialReports.eu

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FinancialReports is a public-company filings database, filings API, and hosted MCP server for analysts, AI-agent builders, and data teams that need fast document ingestion, Markdown extraction, watchlist alerts, webhooks, and filing Q&A across global markets. It is strongest when the workflow starts with filings rather than price charts: company documents, insider trades, IPO references, filing feeds, and programmatic document access are the center of the product. The web index is free to browse, while serious API, MCP, webhook, redistribution, and production workflows are contact-sales.

Fintel

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Fintel is a market-signal research platform for investors who want short interest, off-exchange volume, institutional ownership, insider trades, ETF exposure, options sentiment, filings, screeners, dashboards, alerts, APIs, and AI-assisted research in one place. It is strongest for ticker-level signal pages and ownership/short-interest workflows that help explain positioning, crowding, and unusual activity before deeper fundamental work. Many premium datasets, AI workflows, exports, options flow, and portfolio tools are tier-gated, and the signals should be treated as research inputs rather than investment recommendations.

Gainify

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Gainify was an AI stock research and portfolio platform for global equities, combining screening, S&P Global-powered data, stock reports, valuation charts, AI analysis, earnings summaries, watchlists, portfolio tracking, investor activity, and insider/Congress trading signals. It is discontinued: the canonical homepage says Gainify.io is closed and the service is no longer available. Historical product research and comparisons remain useful, but Gainify is not a current signup option.

getquin

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getquin is a consumer portfolio and net-worth tracker for investors who want broker and bank connections, multi-asset portfolio tracking, dividend views, AI portfolio analysis, retirement planning, budgeting, liabilities, insurance tracking, and a social investing community in one web and mobile app. It is strongest for European retail investors who want a mobile-first overview across brokers, wallets, assets, and community ideas. Premium exists through in-app subscription, but exact public feature gating and regional pricing should be checked before comparing paid plans.

Invesst

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Invesst is an AI-first investing workspace for RIAs, portfolio managers, analysts, and serious self-directed investors who want natural-language research, stock and ETF screeners, automated valuation models, watchlists, real-time market data, and read-only portfolio insights through brokerage connections. It fits users comparing AI investing apps, AI stock screeners, portfolio analysis, and AI-assisted valuation tools. Treat its AI output as a research starting point that needs verification, and treat brokerage integrations as read-only portfolio context rather than trade execution.

MacroMicro

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MacroMicro is a global macro and market analytics workspace for investors who want economic cycle charts, macro dashboards, ETF tools, institutional holdings views, COT flow, event calendars, correlation charts, lightweight backtesting, and AI-powered earnings summaries. It is strongest as a visual macro research platform with paid export and API paths. Constraints include licensing: downloads, API access, watermark-free commercial chart use, and commercial reuse rights are gated to higher-priced plans.

MesoSim

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MesoSim is an options strategy backtesting platform for traders who need low-code strategy definitions, multi-leg simulations, risk graphs, Greeks, volatility surfaces, margin models, and paper/live workflow paths. It is narrow by design: options research first, not broad stock research or portfolio accounting.

MoatMap

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MoatMap is an AI stock screening and equity research tool with Quality, Value, and Momentum scoring, AI deep dives, insider-trade tracking, portfolio X-Ray, macro regime context, AI Top Picks, and investor-lens checks. It is attractive for fast idea validation and pay-as-you-go research, but premium usage depends on Feather credits and AI outputs still require investor review.

Monexa

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Monexa is a low-cost AI stock analysis workspace for investors who want screening, company dashboards, financial statements, DCF models, news, calendars, transcripts, SEC filings, analyst estimates, insider transactions, 13F Whale Tracker views, and congressional trading in one web app. Free access is useful but gated; Pro adds longer history, fuller transcripts, AI tools, saved models, exports, and deeper ownership views. Market data may be delayed, and AI output should be checked against filings, transcripts, and assumptions.

OpenBB

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OpenBB combines an open-source financial data layer with a hosted Workspace for dashboards, AI research, custom agents, and team workflows. It is best for analysts, quants, developers, and firms that want to connect their own market data, internal datasets, provider API keys, widgets, MCP tools, and AI workflows instead of buying a closed terminal. Community access is useful for individuals, while Pro adds collaboration, exports, Excel, RBAC, SSO, MFA, and private deployment options. OpenBB does not provide production market data itself; it orchestrates connectors, your data, and your vendor access.

Portfolio Visualizer

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Portfolio Visualizer is a web-based portfolio analysis suite for backtesting portfolios, testing asset allocations, running Monte Carlo simulations, optimizing allocations, analyzing factors, checking correlations, and researching funds. It is strongest for DIY investors, analysts, and advisors who want evidence for allocation, withdrawal, and risk decisions without building every model in spreadsheets. The free tier is useful but constrained, while Basic and Pro add larger portfolios, YTD results, saving, imports, exports, and commercial-use support on Pro. It is not a broker, live portfolio accounting system, or automatic rebalancing platform.

PortfoliosLab

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PortfoliosLab is a web-based portfolio analytics platform for backtesting, optimization, risk metrics, correlations, screeners, and AI-assisted portfolio workflows. It is useful for comparing stocks, ETFs, funds, crypto, and model portfolios, with more history, imports, exports, and MCP access gated by paid tiers.

Screener.in

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Screener.in is an India-focused stock screener and fundamental-research platform for investors who want company pages, custom financial queries, watchlists, alerts, exports, filings, shareholding data, and Screener AI. It is strongest for Indian equity research where users care about query-language screens, decade-long fundamentals, quarterly-result alerts, corporate announcements, and mobile access. The free Hobby Investor plan is useful, while Active Investor Premium adds exports, more alerts, peer comparison depth, segment data, concall notes, product trends, and AI credits. It is not a global broker, trade-execution platform, or unlimited AI workspace.

SentiSense

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SentiSense is a beta AI market-intelligence and data API platform for investors and developers who want stock data, sentiment, news clustering, social signals, institutional flows, insider trades, congressional trading disclosures, and AI-generated insights in one workflow. It serves as a signal layer for research, not as a broker or adviser.

Smartfin

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Smartfin is a beginner-friendly U.S. stock research platform for visual financials, sector-adjusted scores, plain-English company evaluations, curated stock lists, watchlists, alerts, transcripts, filings, and research checklists. It is best for fundamental stock research without terminal complexity, not global multi-asset coverage, brokerage execution, portfolio accounting, or a public API.

Smartkarma

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Smartkarma is a premium investment intelligence platform for professional investors, asset managers, banks, and accredited/private investors who need independent research, specialist analysts, data tools, watchlists, and real-time alerts. A Preview Pass provides limited discovery, while Pro is documented at USD 10,950/year per user and Premium/Data or Plus access can require request or onboarding workflows. It is not a retail stock screener, broker, portfolio accounting system, or low-cost news site.

Snowball Analytics

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Snowball Analytics is an EU-based portfolio and dividend tracker for retail investors who want multi-asset tracking, broker import, dividend analytics, benchmarking, fund look-through, backtesting, and mobile access. It is useful for long-term portfolio monitoring, but it is not a broker, registered investment adviser, tax filing product, or professional performance-composite system.

Stockcircle

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Stockcircle is a web app for following disclosed investor portfolios, guru transactions, insider trades, U.S. Congress trades, ETF holdings, valuation pages, screeners, alerts, and Pro-only AI earnings-call summaries. It is strongest for retail investors who want idea generation from reported holdings and public transaction disclosures without manually combing through filings. Pro unlocks fuller history, full screener access, instant notifications, stock picks, ad-free use, and AI summaries. The data is useful but inherently incomplete because SEC reporting rules do not require every holding or smaller transaction to be disclosed.

StockInsights.ai

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StockInsights.ai is an AI equity research assistant for filings, earnings calls, transcript summaries, 8-K categorization, SEC filing dashboards, watchlist alerts, APIs, and custom research workflows. It is useful for AI-assisted public-company monitoring, but API commercial use, redistribution, higher limits, and custom workflows require separate plans or contact.

Stocknear

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Stocknear is a lightweight U.S.-market stock, ETF, and options research platform with options flow, dark-pool context, analyst data, 13F holdings, congressional trades, earnings, news, alerts, and an AI Agent. It is best for retail-friendly research dashboards and active monitoring, not global multi-asset coverage, brokerage execution, tax-lot accounting, or a self-serve data API.

TickerTrends

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TickerTrends is an alternative-data and KPI-forecasting platform for public-company investors, analysts, quant teams, hedge funds, and institutions. It combines search, web traffic, app usage, social, reviews, news, transcripts, financial data, consensus, and proprietary trend signals, but those signals are noisy proxies that require validation before investment use.

Trading Economics

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Trading Economics is a macro and markets data platform for browsing economic indicators, calendars, forecasts, market data, company financials, news, ratings, and corporate events, with paid REST API, WebSocket, spreadsheet, BI, and AI-assistant integrations. It is strongest for developers, analysts, and teams building dashboards, alerts, research apps, and macro data pipelines from one source. Guest credentials provide limited sample access, while Standard, Professional, and Enterprise plans govern real API use, streaming, rate limits, row limits, and commercial rights. It is data infrastructure, not a broker or investment-advice service.

Tweenvest

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Tweenvest is a web-based stock research app with company dashboards, screeners, watchlists, portfolio tracking, transcripts, valuation tools, and AI-assisted analysis. It is positioned for retail investors, especially European and Spain-aware workflows, with the best coverage and AI features reserved for higher tiers.

WallStreetZen

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WallStreetZen is a stock research and screening platform built around Zen Ratings, top analyst tracking, due diligence checks, forecasts, advanced screeners, price-move explanations, and watchlist updates. It fits individual investors who want plain-English research and quant-style grades, but it is US-stock focused and Premium-gated for the strongest ranking and analyst features.

Winus

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Winus is an AI-assisted financial research workspace for stock, market, macro, and cross-asset analysis. It is best evaluated as a source-traceable research assistant for finance professionals, not as a broker, standalone data terminal, public API, or replacement for verifying investment work.

Yahoo Finance

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Yahoo Finance is the familiar free market portal for quotes, business news, watchlists, portfolios, charts, screeners, and basic company research. It works best for mainstream investors who want a quick read on markets, holdings, earnings, analyst expectations, and news without learning a specialist terminal. My Portfolio adds manual portfolios, watchlists, CSV import/export, and supported brokerage linking. Premium plans add portfolio analytics, premium research, stock ideas, screeners, historical downloads, and reduced ads, but data delays and subscription availability vary by market.

Zenvesto

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Zenvesto is a web-based stock, ETF, crypto, and benchmark portfolio tracker built around dashboards, watchlists, performance metrics, portfolio health scoring, AI-powered insights, market news, earnings calendars, CSV imports, and historical simulation. It fits stock portfolio tracker and AI portfolio tracker intent, but current public evidence supports conservative U.S. exchange coverage, finite plan limits, and manual or CSV workflows rather than broker sync. It is useful when a modern dashboard and guided analysis matter more than tax-grade accounting or execution. It is not a broker, public API today, custodian sync product, wash-sale engine, or professional portfolio accounting system.