19M looking for portfolio modifications advice

I’m investing for very long term (10-20 years), and I’m comfortable with volatility. Over the past couple weeks I cleaned up my portfolio, selling some smaller/random positions, added to MSFT, opened a META position, and tried to simplify things. Here’s where I’m at now (combined accounts): • NBIS – 34% • GOOG – 26% • MSFT – 11% • ASTS – 11% • MU – 6% • META – 4.5% • Small cash position (3%) It’s obviously very tech-heavy and pretty concentrated, especially NBIS + GOOG. I’m okay with risk, but I’m wondering: Would you trim NBIS down? Add something like an ETF? Keep concentrating into big tech? Or just let it ride at my age?