While you can buy as many shares of a single ETF as you want, experts suggest a "Goldilocks range" for the number of ETFs in your portfolio to ensure diversification without over-complicating things: Fractional Shares | Invest in Stock Slices | Fidelity
: A 10% gain on $1,000 is $100, regardless of whether that $1,000 bought one share or fifty. how many etf shares should i buy
: Buying by dollar amount ensures all your cash is working for you, rather than leaving "change" in your account because you couldn't afford a full share. 2. How Many Different ETFs Should You Own? While you can buy as many shares of