I also agree with SDhunter. When I was in graduate school for finance I learned two very important things. Number one was I was not going to leave my pension heavy FD job to go into banking and finance but I still finished my masters anyway. Number 2 was I am not going to invest in individual stocks. We had to calculate the beta of portfolios. That is fancy for how volatile my particular stock holdings are relative to the S&P 500. It can absolutely be calculated but you needed to hold an average of 12 stocks(old memory) that nothing dramatic happens to to closely match the index. Sure you can buy one stock and become a gazillionaire but those stocks typically fall in a similar fashion on average. A risk I do not want. My finance professors invested in Vanguard index funds. Because of their overall lower fees you could definitely calculate the impact to your portfolio over the decades. A percentage here or there is huge over the life of you holdings hence my statement above about not hiring a commission based CFP. Because of this I hold Vanguard target date funds and sleep well at night. Don't get me started on annuities!! If your CFP mentions them find another unless you like buying her/him vacations and less returns on your investments!!