A broadening stock-market rally just led to this ‘fairly uncommon’ occurrence

U.S. stocks recently broadened their rally, with a majority of the S&P 500’s sectors closing at 52-week peaks at the same time, according to Bespoke Investment Group. 

“Yesterday, six of the eleven S&P 500 sectors traded at 52-week highs,” Bespoke said in a note emailed Wednesday. ”That is the highest share of sectors simultaneously hitting 52-week highs since May 2021.”

It’s…