Nvidia stock has recently surpassed Microsoft to become the world's most valuable publicly traded company, with a market cap of over $3.3 trillion. Despite a 200% increase in the past year, many investors are questioning whether to sell or buy. Historical data shows that companies tend to stay at the top for years after reaching the peak. Microsoft, ExxonMobil, and Apple all experienced significant growth after becoming the most valuable stock. Nvidia, benefiting from the rise of artificial intelligence, could continue to thrive in the coming years. Although the stock's valuation is high, history suggests that it still has room to grow and outperform the S&P 500. Investors may want to consider holding onto Nvidia stock as it continues to lead the market.