1. Nvidia's stock has fallen 21% from its January peak due to tariff challenges and rising competition from Chinese semiconductor firms; 2. Most 'Magnificent Seven' tech stocks underperformed the S&P 500 in 2025, reversing their 2024 dominance; 3. Despite the price drop, Nvidia remains expensive overall, with Seeking Alpha's Quant System rating it a 'Hold' and suggesting better-rated tech alternatives.