https://intrinsicinvesting.com/2019/04/22/how-many-stocks-should-you-own-in-your-portfolio/
The article is about general stick picking and concludes:
If you seek market returns, own everything in the market via index funds. This is a perfectly reasonable approach to investing. If you seek to outperform the market, own 20-25 stocks (or we’ll allow for as many as 50 if you think the additional stocks are really critical to the success of your strategy). But do not end up with a portfolio that is stuck in the middle.
I think that fits well with the typical size of HYPs reported here.
FWIW I’m currently at just under 30 shares in my own HYP. I’d be uncomfortable with anything much smaller and would have no problem growing to the mid thirties over time as and when appropriate shares come into the “HYP frame”.
SDN