Quick, name the best-performing stock of 2023 so far. No, it isn’t related to artificial intelligence — although shares of AI-linked chip maker Nvidia Corp. NVDA, +0.24% have surged more than 200% thus far on the year. The so-called Magnificent Seven group of stocks, which includes Nvidia, have produced illustrious year-to-date returns. Both collectively and individually, those stocks have been all the rage on Wall Street this year. Apple shares AAPL, -0.04% have gained nearly 50% so far this year, while Mi ...