Early 20s portfolio and looking for feedback on diversification / risk

I’m in my early 20s and have been investing for a few years. I’m long-term focused (no trading, no options) and reinvest dividends. I’m mainly looking for feedback on diversification, concentration risk, and whether anything here feels redundant or missing. Current holdings: * VOO * VXUS * Amazon * Apple * Meta * Nvidia * TSM * Alibaba (BABA) * IBKR * Gildan I know there’s a heavy tilt toward big tech/growth, which I’m okay with given my time horizon, but I’m wondering if there are any obvious overlaps or risks I’m underestimating?