Should I reduce my positions in amd, tsla, tsm, pltr?

It's all in the title. I'm starting to see some nice unrealized gains across several of my positions, and honestly, it's making me a bit nervous. These stocks have been climbing so fast lately that I’m wondering when and how to take profits. Do you usually trim 33%, 50%, or just hold and ride the wave? I can’t decide if I should stay patient or lock in some of these gains before things turn. Are you feeling confident holding right now?