Huh??
Mutual funds are stocks. The S&P 500 is, by definition, shares of 500 different companies. That is diversification. Does your broker have you in 500 different stocks?
My broker is a T. Rowe Price fund manager. I pay no transaction fees, no upfront fees and far less than 1% management fees. T. Rowe never cold calls me to make a trade so they can earn a commission. Given my account balance, if want advice I can call anytime.
I never worry about tracking cost basis including reinvested dividends or required minimum distributions. T. Rowe does that for me.
It's hands off wealth building. I even have an account ceiling. when my balance reaches the limit, they automatically transfer a defined amount to my checking account.
Equity Index 500 up 22.45% YTD
Blue Chip Growth up 26.21% YTD