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Guides

What each members tool shows, how its numbers are built, and what it is not. Live figures, refreshed with the site.
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The Filings Browser: every insider buy and sell on the price chart
How the members Filings Browser works: 23,596 open-market insider buys and 19,416 $1M+ sales across 4,523 tickers over two years, plotted on the price the day t…
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Cluster buys: when three or more insiders buy the same stock
What an insider cluster buy is, how the 0–100 score is built, and why clusters are the strongest pattern in SEC Form 4 data. 1,489 scored clusters since 2024 in…
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The Trader Atlas: insiders ranked by what happened after they bought
How the Trader Atlas ranks 447 insiders by the market-adjusted return that followed their open-market purchases, with every buy plotted on the share price. Meth…
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The Backtest engine: test an insider-buying rule on two years of filings
How the members Backtest tool works: pick who has to buy, how big, which signal and how long to hold, and get the win rate, market-adjusted return, equity curve…
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Seasonal stock patterns that survived an out-of-sample test
How the Seasonal tool finds calendar windows using only pre-2018 prices and keeps only those that repeated in at least 75% of the years since. 282 windows acros…
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Chart formations: sixteen patterns tested on 34 million days of data
Golden cross, death cross, RSI, 52-week highs, breakouts, three red days — every occurrence across 8,067 US stocks since 1994, measured against the S&P 500 and …
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Email alerts: one email the morning after a filing you care about
How members' insider-trading email alerts work: watch tickers, watch people by name, market-wide CEO, CFO and cluster signals, a dollar floor, and no email when…
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The JSON API: insider buys, sells, clusters and sentiment for your own tools
Endpoints, parameters and examples for the members JSON API: /filings, /clusters and /sentiment at insiderfilingsdata.com/api/v1, keyed access, rebuilt every mo…
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The Formations ThinkScript study for ThinkorSwim
What the five-signal ThinkorSwim study plots — POP, RUN, BAND, RSI and PULL — why the golden cross is deliberately absent, and how to install it.…
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How to read an SEC Form 4, and which transactions actually matter
What a Form 4 insider filing contains, what transaction codes P, S, A, M and F mean, why only about 9% of transactions are real decisions, and the two filters t…
Built from SEC EDGAR ownership filings. Only open-market purchases (transaction code P) and sales of $1M or more are counted; grants, option exercises and tax withholding are excluded because they run on schedules set years earlier. Historical description, not a prediction, and not investment advice.