For that slice of your portfolio that you enjoy stock picking with, which account do you prefer to use? Taxable or Tax Advantaged? There are two main schools of thought:
1. Always put your stock picks in Tax Advantaged. The reasoning is because if you are bullish on a stock, you want all of that upside growth to be free of any tax friction when you go to trim or rebalance. This is especially advantageous inside a ROTH, where all gains, even 10x or 100x are completely and forever tax free.
2. Always put your stock picks in Taxable. The logic here is that if you happen to be wrong about your picks, you can deduct your losses against your gains in a taxable account. The other benefit is you protect your precious and limited contributions to your tax advantaged accounts.
Personally, I prefer to put the stock picks in my tax advantaged accounts, particularly the roth ira. I feel that if you are bullish on a stock, why put it in a taxable, as that is already accepting a losing mentality. If that is the case, you are better off just staying away from individual stock picks, and sticking with broad market index funds.