You face a clear question does chasing high growth through a theme focused on artificial intelligence pay off or does concentration and valuation exposure make it perilous The story is vivid Global assets in AI and Big Data funds topped USD billion by Q Late- hype after ChatGPT and fresh inflows tied to DeepSeek pushed funds sharply higher Performance has followed the narrative Information Technology climbed and Communication Services year-to-date outpacing the S amp P s return What you buy matters A pure theme concentrates on a few companies the Magnificent Seven with Nvidia showing up in nearly of AI Big Data portfolios That creates overlap with broad indexes and raises volatility This intro previews what comes next choosing between individual stock picks and ETFs reading index rules and sizing positions to match your time horizon Key Takeaways Theme funds saw explosive asset growth driven by post-ChatGPT and DeepSeek inflows Sector gains in outperformed the S amp P but concentration is high Large-cap leadership especially Nvidia raises overlap and sensitivity to valuation moves Geography matters Europe holds the largest fund assets while U S listings dominate portfolios Your success depends on position size diversification and a clear plan not hype alone Why you re weighing AI versus broader Tech now With Information Technology and Communication Services leading returns your allocation choices now carry more consequence You see the market shift Information Technology rose and Communication Services through October That outpaced the S amp P and NASDAQ Composite and boosted technology... Login to read full