Thanks, I was wondering what the author was doing with the $600.00 that was accumulating before it was invested the first month at 7%. It sounded like he just started from $100.00 for the 7% set, which doesn't make the comparison fair. Always good to see reader comments like yours to get a better picture, rather than…

Can someone confirm the math on this? I'm not sure if investing in stocks or funds works out like this, because I don't think those instruments compound the same way a Bank CD does.