Data sources

Every byte of data on Capitol Markets originates from one of these official sources.

• U.S. House Clerk — Annual filing index

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  XML index of every PTR, Annual FD, and Amendment filed by every House member, year by year.

  https://disclosures-clerk.house.gov/

• U.S. House Clerk — PTR PDFs

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  Per-filing PDFs at /public_disc/ptr-pdfs/{YEAR}/{DocID}.pdf — parsed into structured trades.

  https://disclosures-clerk.house.gov/public_disc/ptr-pdfs/

• U.S. Senate EFD

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  Online search after accepting the prohibition agreement form. HTML PTR pages parsed into structured trades.

  https://efdsearch.senate.gov/search/

• Clerk of the House — Member Data XML

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  Every House member with bioguide ID, party, district, and committee assignments. One canonical source.

  https://clerk.house.gov/xml/lists/MemberData.xml

• U.S. Senate — Senators contact XML

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  Every senator with bioguide ID, party, state. Maintained by the Senate.

  https://www.senate.gov/general/contact_information/senators_cfm.xml

• U.S. Senate — Committee Assignments

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  Senator → committee mappings for the current Congress.

  https://www.senate.gov/general/committee_assignments/assignments.htm

• Library of Congress — Bioguide

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  Official biographical directory. Photos and biographical text.

  https://bioguide.congress.gov/

• Yahoo Finance

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  Daily closing prices for return estimation. Cached locally.

  https://finance.yahoo.com/