[jdikatz]

The 2012 STOCK Act requires disclosure of all assets exceeding $1,000 in value -- so the disclosure information we collect includes private holdings. We only calculate financial returns for listed assets.

This is an active topic in our research pipeline -- specifically, whether holdings in private companies are going up among officials. Returns in private companies are certainly less transparent, so this might be the way to go if an official wanted to obfuscate.