Blog: disclosure research and data notes
Articles on how Congress and insider trade disclosures work, what the data shows and how the numbers on this site are built. Subscribe with the RSS feed.
Key Facts
- 5 articles on how Congress and insider trade disclosures work and what the data shows.
- The newest article was published 2026-09-29 (29 September 2026).
- Numbers in articles are filled in from the same data as the rest of the site when it is built.
Articles
- Did Copying Congress Beat the Market? What the Data Shows Average returns after Congress and insider buys, measured against the S&P 500 from the day after each filing, with sample sizes and a plain reading.
- How Congress Stock Trade Disclosures Work Members of Congress must report stock trades within 45 days, in dollar ranges. Here is what a filing contains, what it leaves out and why it arrives late.
- What Is an Insider Cluster Buy? A cluster buy is three or more company insiders buying the same stock on the open market within 30 days. Here is why it gets attention and how to read it.
- Why Leaderboards Should Rank Out of Sample Ranking people on the same trades used to pick them rewards luck. Splitting the record at a cutoff date shows whether a good past carried forward.
- Why Raw Trade Disclosure Data Needs Cleaning Duplicate rows, doubled tickers and stripped decimals are all real problems in scraped insider and Congress trade feeds. Here is what we found and how we...