As a strong year in U.S. stocks winds down, fund managers face a potentially consequential choice in 2024: stick with the few massive growth and technology names that have powered equity indexes higher, or take a shot on the rest of the market. Shares of the so-called Magnificent Seven – Apple, Microsoft, Alphabet, Amazon, Nvidia, Meta Platforms and Tesla – have individually soared between around 50% and 240% in 2023, making them among the market's most rewarding bets. Because of their heavy weightings in the S&P 500, the seven were responsible for nearly two-thirds o...