Whale Wisdom: Track Hedge Funds Using 13F Filings
whalewisdom.com
From the page
Saved with the link. Notes from 2007 to 2016 are mostly the page's own words, so this is probably an excerpt.
Whalewisdom.com provides a suite of tools to help track the performance of Hedge Fund and Asset Managers by analyzing and organizing their reported 13F and Schedule 13D/13G filings.