# Free Tool Tracks US Congressional Stock Trading Data A new platform offers transparent access to House member financial disclosures since 2015. - **Source:** [Hacker News: Show HN](https://news.ycombinator.com) - **Published:** 2026-11-09 - **Topic:** [Finance](https://brifing.si/c/finance) - **Original article:** - **On Brifing:** https://brifing.si/s/ff3c2a69-17ca-4e15-9661-0aba99ef356d ## New Platform Launches A developer has released a free tool designed to track stock trades made by members of the US House of Representatives. This platform serves as a replacement for existing House Stock Watcher services. It aggregates data from periodic transaction reports filed with the House Clerk, offering a comprehensive historical view since 2015. ## Data Transparency Mechanism The tool parses official disclosures filed under the STOCK Act, which mandates reporting within 45 days of a trade. Each entry includes the trade date, the specific asset, and the reported value range. The system automatically links back to the original source documents, ensuring users can verify the accuracy of every listed transaction. ## Recent Trading Activity Recent filings reveal diverse activity, such as Maria Elvira Salazar purchasing NVIDIA shares on October 23, 2026. Other entries show joint accounts trading Applied Materials and various municipal bonds. These reports were made public between November 3 and November 5, 2026, highlighting the lag between execution and public disclosure for voters. ## Reporting Delay Analysis The platform calculates the exact number of days elapsed between a trade and its public disclosure. For instance, some reports took as few as 10 days to reach the public site, while others took up to 41 days. This metric helps users identify potential patterns in how quickly representatives disclose their financial movements. ## Scope and Limitations The dataset covers House members exclusively, as the Senate does not currently publish bulk export data for similar analysis. The tool excludes trades listed only on scanned paper forms that cannot be read with certainty. Amendments are marked accordingly, and trades withdrawn in later reports are removed to maintain data integrity for users. ## Technical Accessibility Features Users can access the data through multiple formats, including CSV and JSON downloads. An RSS feed is available for those who wish to follow specific trades or members in real-time. Additionally, the data is integrated into the OptimistFi MCP server’s get_congress_trades tool, allowing for programmatic access by member or by stock ticker. ## Historical Data Depth Beyond current trades, the platform maintains a full list of transactions dating back to 2015. This includes records for members who have since left the House. Users can filter information by state or by specific stock, providing a granular view of how legislative portfolios have evolved over the past decade of service. ## Public Accountability Impact By centralizing these disclosures, the tool aims to increase public scrutiny of congressional financial interests. While the STOCK Act provides the legal framework for these disclosures, this platform simplifies the process of monitoring potential conflicts of interest. It remains a resource for those interested in the intersection of legislative duty and personal investing. ## Sources covering this story - https://optimistfi.com/congress — --- _Summary written by Brifing from the original reporting. Copyright in the original article belongs to its publisher; read the full piece at the link above._