Mega-cap tech stocks continue to lead the U.S. stock market higher this year, driving major indices such as the $S&P 500 Index (.SPX.US)$ and $NASDAQ 100 Index (.NDX.US)$ to record highs. Among the Magnificent 7 this year, the most impressive performer is $NVIDIA (NVDA.US)$, which has risen nearly 60% since the beginning of the year, followed closely by $Meta Platforms (META.US)$ w...