Even more intriguing, a classical result of finance theory proves that active portfolio management (that is to say stock-picking) on average cannot perform better than passive portfolio management (that is to say index tracking) ... but that's another topic
P.S.: investing in stocks for your retirement plan is good only on the very long term (20+ years) and it is best practice to invest in a rather conservative index tracker in order to allow for the diversification of the idiosyncratic risk; also, it might be a good idea to invest into inflation-protecting industries (or buy some real estate, which is equivalent).


