Big tech stocks reclaimed their position as the market’s leaders this year. Just how far ahead of the pack have they run? 

Collectively, the stocks known as the Magnificent Seven—Apple, Microsoft, Alphabet, Amazon.com, Nvidia, Tesla and Meta Platforms—have jumped 75% in 2023, leaving the other 493 companies in the S&P 500 in their dust. (Those have risen a more modest 12%, while the index as a whole is up 23%.)