From their own filings

Tracked investors

Every profile is built from official filings — SEC Form 4s, Schedules and 13Fs, and the House clerk's STOCK Act disclosures — dated to the filing it comes from, never estimated.

Individuals

Executives and public figures, from their own SEC filings

Company insiders

Founders and executives, from two years of their own Form 4 stock sales and purchases

Members of Congress

US House STOCK Act trade disclosures, linked to the source documents

Funds & institutions

Quarterly 13F portfolios, diffed against the prior filing