Just curious what approach you all take.
Personally I have 60% in ETFs (30% QQQ, 30% SP500, at purchase price, no re-adjustment if one of them outpaces the other) and I tend to keep 40% in single stocks.
Of course sometimes if one of my holding runs up the ratio will tilt towards single stocks, but then I try to balance it out by only putting in my ETFs with my monthly contributions for a few months. For now that is still significant enough, but maybe in a year or two it won't be hopefully.
I also limit to not buy more than 10% of my NW in one stock, and max cap it at 20% if it runs up. E.g. bought google with 8%, and now it is 16%, once it hits 20+% i will start trimming.