The stock market, until the last couple of days, has been hitting record after record this year.
The Dow Jones Industrial Average DJIA, -0.16% topped 24,000 with little fanfare, and the S&P 500 SPX, -0.01% sits comfortably above 2,600, easily topping Wall Street strategists’ targets for the year.
But along with that near-effortless rise have emerged pockets of euphoria, mostly in niche markets, although there are some signs of froth in the market as a whole.
