Nvidia and Broadcom are two top AI stocks to own in 2026 and beyond.According to The Motley Fool's 2026 AI Investor Outlook Report, 9 out of 10 investors surveyed said they planned to buy or hold artificial intelligence (AI) stocks in 2026. While Motley Fool Senior Investment Analyst Asit Sharma believes that smaller semiconductor and data center ecosystem stocks are set to outperform in the coming years, that doesn't mean your portfolio shouldn't include some megacap AI stocks as well.Let's look at two mar ...