I have $19k in a roth IRA 100% VOO, and $33k in a traditional IRA 100% VOO with Charles Schwab.
I don't know much about investing just that if I had to choose one ETF & forget about it until retirement (another 25 years away), that VOO is a good choice.
I want to maximize and grow my IRA accounts as much as possible over the next 25 years. Would adding an additional ETF help my goal? I have read that KRAM or SCHG may be a good secondary.. advice?