I recently bought some shares of iShare World ETF (66% US). Would it be wise to invest on iShare/Vanguard S&P 500 (100% US, much better performance), or should I just invest on
Trove Finance on Twitter: "The S&P 500 index tracks the 500 largest companies listed on US stock exchanges. You can invest in this index through popular ETFs such as the SPDR S&P