Case study · SEC filings intelligence for investors

The Filing Fool: SEC filings, insider trades and fund moves on one timeline

Every insider filing, congressional trade, fund position change and federal contract on one page per company, with each dollar sized against the company's own revenue or market cap.

Visit thefilingfool.com iOS app

Insider Scanner: open-market insider buying and sellingNarrated walkthrough of the Insider Scanner, which ranks open-market buys and sells by officers and directors by dollar value, filtered by company size and time window. Each trade links to its Form 4, and pre-planned 10b5-1 trades are left out.

The Filing Fool is not investment advice. Every figure comes from public filings.

The problem

Why we built it

US public-company disclosures are public but fragmented. Form 4 insider trades, 13F and N-PORT fund holdings, congressional trade reports, lobbying disclosures and federal contract awards each live in different systems and formats. Most Form 4s are grants, option exercises and pre-planned 10b5-1 sales, so the trades that actually signal something get buried.

Stack

Next.jsReact Native / ExpoPython data pipelinesFirebaseGoogle CloudLLM summarization

What we built

Continuous ingestion pipelines over SEC EDGAR, congressional disclosures, lobbying records and federal contract awards
Entity resolution linking insiders, funds, members of Congress and companies across sources
A per-ticker timeline that correlates every event with price and sizes it against revenue or market cap
Signals ranked by strength: fund conviction, cross-source agreement, unusual insider clusters and industry pulse
Insider Scanner that ranks open-market buys and sells and filters out 10b5-1 plan trades
Follow-a-person alerts, track-record views showing how stocks moved after each trade
Server-rendered Next.js website with programmatic SEO, plus a native iOS app with push notifications

Videos

The Filing Fool walkthroughs and explainers

Cross-Source Agreement: insiders, Congress and funds in stepNarrated tour of Cross-Source Agreement, which lists stocks where company insiders, members of Congress and large funds are all buying or all selling. Opening a card shows a plain-English write-up and a quarter-by-quarter activity recap next to the share price.

Ticker Timeline: every filing on one stock, on one pageNarrated walkthrough of the ticker page for Apple and Microsoft: the latest signal write-up, a quarterly recap of insider, fund, congressional and lobbying activity next to the share price, and short-interest data.

Unusual Activity: stocks where several filers move togetherNarrated tour of the Unusual Activity page. Each card is a stock where several insiders or funds traded in the same direction, with the filer count, combined dollar amount and a short summary; opening Align Technology shows its full filing recap.

Deep Dives: one company, read closely from its filingsNarrated tour of Deep Dives, daily company write-ups built from each company's own filings. The list is filtered by theme, then a Caterpillar story is opened, with sections on what turned up, the key financials and recent company activity.

Snapshots