Tech stocks and large-cap stocks such as Amazon and Netflix have led the bull market higher, but the author of today’s article cautions that, with these stocks currently making up 25% of the S&P 500, there may be too high a concentration of high tech stocks – and this could spell trouble for passive investors with money in index funds tracking the S&P 500. For more – including how investors in this position can go about reducing their risk (via either an active or passive approach) – CLICK HERE.