I don't have a great source link for you (forgot) but you only need a very small number of companies to roughly match a given index: 20-ish. I'm saying my 25 co

I don't have a great source link for you (forgot) but you only need a very small number of companies to roughly match a given index: 20-ish. I'm saying my 25 companies will handily beat the S&P 500 over the long run. I'm trading with real money in a public forum so time will tell.