Group 1 - Alphabet (GOOGL) has reached a market cap of $4 trillion, joining Nvidia (NVDA) in this elite category, and has initiated a multi-year partnership with Apple (AAPL) to enhance iPhone AI technology [1] - GOOGL's stock experienced a slight gain of 0.4% after three consecutive losses, closing below $340 and testing its 30-day moving average [3] - Other megacap companies like Apple and Nvidia have also seen declines after reaching significant market cap milestones, indicating a trend among large-cap stocks [5] Group 2 - Historical data shows that stocks crossing a trillion-dollar market cap have an average return of 24.86% one year later, with positive returns 75% of the time [7] - For stocks that have crossed the $4 trillion threshold, Alphabet, Apple, and Nvidia are included, with Microsoft (MSFT) showing a significant pullback of 10.4% within a month of reaching its peak [8] - Despite short-term volatility, long-term returns for Big Tech remain attractive for buy-and-hold investors, with other companies like Eli Lilly (LLY) and Walmart (WMT) also aiming for significant market cap milestones [9]