Stock Talk - Ep 78 -Real reason it's hard to beat the market

It's interesting to note that as stock markets in the US set record high's on a daily basis that when you dig deeper, most of the gains in the market are being driven by a handful of stocks. This episode of Stock Talk skews heavily into some academic research side and I use the term "skew" purposely as some old research has re-emerged and has shed some light on another factor that makes it hard to outperform the overall stock market.