Let's say I want to invest in a predefined portfolio defined by me (e.g. 25% AAPL, 50% TSLA, 15% O, 10% SOXX), is there any way to do it? Can I just say invest 10k in my ETF and it automatically buys and groups these stocks and reinvests dividends in the same ratio? Also, when I change the composition, it will re-balance all of them accordingly?
