The US stock market has now grown to be twice the size of the US economy. Absolutely mind-blowing. The US stock market cap to GDP ratio hit a record 211%.A big reason for this growth is the tech sector. The S&P 500 tech sector price to sales ratio that just hit 10x. It's the highest ever.Even the 2000. com bubble peak, the ratio is only 7.8%x. So the question becomes, should you be worried about your investment portfolio.The bears will tell you everything's overvalued and a big crash is right around the cor ...