Thank you for an interesting and informative article.

Please correct me if I'm wrong, but I believe there is a typo in the last sentence of the third paragraph (the one immediately following the bar chart), which says, "...and after picking a relatively small number of them, you have diversified away most of the MARKET risk of any individual stock". Shouldn't it be [firm-] specific risk, instead of the market risk, which is to be diversified away?