I really do like concentrated portfolios. I started my investment journey around July 2021 and by oct 2022 i was roughly invested 55 percent in pfc. Now I am much more diversified. Pfc is about 34 perc of my portfolio now. (Sold 45 perc pfc) and incremental capital in other stocks 
I have also uploaded a hypothetical deep value portfolio which is more diversified, would be glad if you can add something on it.(Deep Value Portfolio)