Unfortunately, nobody knows that. I mostly invest in individual stocks instead of ETFs. With the increasing depreciation of the USD, partly due to over-indebtedness, I have no desire to hold the entire S&P, or too much USD, in my portfolio.
Edit: FYI, I am around 40% invested in the USA/USD.
@Der_Weg_mit_Aktien Around 70% of the MSCI World is made up of US equities, which are often also represented in the S&P 500. So I recommend the S&P 500 or the NASDAQ 100 plus the All World to maximize returns
@Der_Weg_mit_Aktien if you want maximum return but also maximum risk then buy the S&P 500 Information Technology ETF. P.S.: No financial advice but source Trust me Bro 😉