How we collect congressional stock-trade data

• Every hour, at 15 minutes past the hour. Each check runs for up to 4 minutes: House filings first, then Senate filings.
• A new filing usually shows up on WE-TP within about an hour of appearing on the official site. After a large batch of filings it can take a few hours to work through all of them.
• Each Senate check looks back over the last 90 days of filings, so late or corrected reports are picked up too.
• If a scheduled check is ever missed for 3 hours, the next visit to the Stock Trades page starts one.
• Names, parties, states and districts of members are refreshed once a day from the official House and Senate member lists.
• The Refresh button on the Stock Trades page reloads what we have already collected. It doesn't contact the official sites.
• Trades appear weeks after they happen. Members have up to 30 days after learning of a trade, and no more than 45 days after it, to file a report.

Official government sources only. No paid data services or third-party trackers.

• U.S. House: the Office of the Clerk's financial disclosure site. We read its yearly list of filings and each Periodic Transaction Report.
• U.S. Senate: the Secretary of the Senate's Electronic Financial Disclosures site. We read the list of Periodic Transaction Reports and each report.
• Member details: the official member lists published by the House Clerk and the U.S. Senate.

• It only reads public pages and files, and runs the same report search any visitor can. Before searching the Senate site, it accepts the notice that site shows every visitor.
• It makes at most 4 requests at a time to the House site and 2 at a time to the Senate site.
• Once it has caught up on past filings, an hourly Senate check usually makes fewer than 30 requests.
• It runs on Vercel's servers, which don't have fixed IP addresses. That's why it identifies itself with a signature instead.

• User agent: WE-TP-DisclosureSync/1.0 (+https://www.we-tp.com/disclosure-sync; contact@we-tp.com)
• Requests to Senate sites are signed with Web Bot Auth (Ed25519 HTTP message signatures, RFC 9421). The public key is published at www.we-tp.com/.well-known/http-message-signatures-directory (key ID tL1kKuJddXHqd1iaiNmQDR-I5Y75QVC_ysjfCpTGsns).
• The Senate's Office of Public Records asked that automated tools register with its security provider, Akamai. We are doing that, and Senate trades will appear once our tool is approved.

• Trades are shown exactly as filed. Amounts are the ranges the filer reported.
• A trade dated after its own filing date is a filer typo. We show it as filed and label it “as filed (likely typo)”.
• Every trade links to its original filing on the official site.
• It's free for verified WE-TP members.
• It isn't investment advice or a credit or financial rating of anyone. We never use it for fundraising, soliciting or any commercial purpose, in line with the notice on the Senate site (5 U.S.C. § 13107).

If you run one of these sites and want us to check less often or stop, or if you spot a problem with the data, email contact@we-tp.com. We'll act on it.