Unlike the stock market, experienced VCs should be applying quantitative techniques to private data they've collected. That's one way to keep their edge. You do

Unlike the stock market, experienced VCs should be applying quantitative techniques to private data they've collected. That's one way to keep their edge. You don't seem to appreciate the distinction. Of course most public-market quants will see their edge fade if their competition has access to the same data. That doesn't refute the initial success of those techniques.