Over time they've also been known to outperform their market - cap weighted counterparts. (business.financialpost.com)
A chart from Tom Brakke's Research Puzzle pix comparing the performance of the S&P 500 and its equal weight counterpart from 2000 to March 2011: (greenbackd.com)
The study showed that although these preemies were not necessarily exposed to a larger number of risk factors compared to their normal birth weight counterparts, these stresses appeared to have a greater impact on their mental health as adults. (sciencedaily.com)