Track what top investors own and why they own it

I've been investing for ten years and superinvestors (Buffett, Ackman,..) have been my main source of inspiration. I got frustrated with existing 13F trackers: clunky interfaces, unreliable data, and you'd land on a table of positions with no way to understand what any of these companies do and why the superinvestor bought it. So I built this. For every position it pulls from the annual report what the company does, how it makes money, what really matters in the financials, key risks,..