In most years, especially in strong up years, the Nasdaq 100 has stood taller than the S&P 500, driven largely by the tech sector's outsized gains. Invesco's Q3 update shows QQQ with a NAV gain of 8.94 percent in Q3 2025, edging out the S&P 500's 8.12 percent. Still, outperformance on the way up does not guarantee the same result going forward, particularly if tech shifts from boom to sudden slowdown. ...