If anyone is interested, I built a dashboard that tracks the performance of individual congressional stock trades here:
https://www.quiverquant.com/congresstrading/
It also allows you to search for trades by stock, instead of needing to parse through thousands of disclosure forms.
I do want to mention one weakness of my data, which is that I don't currently parse hand-filed disclosures. Most politicians do electronic filings, which are easy to scrape, but some still file by hand. Working on a solution for that, which should hopefully be live before too long.