Best Free Money Flow Tools for Investors

HedgeFollow

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HedgeFollow is a web research platform for tracking hedge funds, institutional holders, insider trades, ETF activity, ownership flows, stock pages, fund pages, and portfolio-builder workflows from SEC filings. It is strongest when investors want a fast, visual way to follow 13F, 13D/13G, and Form 4 activity without paying for a larger terminal. The major caveat is timing: 13F holdings are structurally delayed by the SEC reporting process, so the data is useful for research and pattern recognition, not live portfolio mirroring.

ORTEX

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ORTEX is a market-data and analytics platform best known for short interest, securities lending, options flow, and trading-signal context. It fits active investors, analysts, and data teams that need more than a basic quote page, with deeper web-app and API access moving behind paid tiers.

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.

SecForm4.Com

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SecForm4.com is a U.S. insider trading and ownership monitoring site for Form 4, Forms 3 and 5, 13D/13G, and 13F filings from EDGAR. It fits users searching for SecForm4, insider trading trackers, Form 4 activity, and 13D/13G monitoring, with free public access and advanced ownership views for power users. The right use case is monitoring SEC filing signals before checking transaction context, issuer fundamentals, and current ownership. It is not a broker, global insider-disclosure database, portfolio tracker, public API, or standalone buy/sell signal.

ETF Central

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ETF Central is a free ETF research and education site for screening, comparing, watching, and learning about U.S.-listed ETFs. Use it for approachable ETF discovery, segment flows, portfolio building, news, and ETF education before moving to execution or deeper portfolio accounting elsewhere.

ETF Research Center

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ETF Research Center is an ETF analytics site powered by AltaVista Research, focused on constituent fundamentals, valuations, overlap, stock locator workflows, portfolio building, and ETF reports. Use it when ETF analysis needs to look through the fund wrapper into holdings and fundamental exposure.

ETF.com

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ETF.com is an ETF media and research site with a U.S. ETF screener, comparison tools, fund flows, holdings search, watchlists, Portfolio Builder, launches, closures, and ETF education. Use it when you want ETF discovery plus editorial context from a known ETF-focused brand.

ETFdb ETF Screener

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ETFdb ETF Screener is a VettaFi ETF database and screener for U.S.-listed ETFs and ETPs, with filters for returns, flows, expenses, ESG, dividends, risk, holdings, taxes, technicals, and ratings. Use it when ETF selection needs structured screening and exportable results.

LuxAlgo

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LuxAlgo is a TradingView-focused technical-analysis suite for traders who want packaged indicators, price-action overlays, screeners, alerts, oscillator tools, calculators, and AI-assisted backtesting. It is built for chart-based workflows across stocks, ETFs, futures, commodities, currencies, and crypto. Use it as a technical-analysis and strategy-exploration layer, not as a broker, fundamentals platform, portfolio accounting system, or proof that a backtest will work live.