
AI Stock Concentration Reaches Bubble Threshold as Global Tech Index Surges 456% in Decade
The Invesco QQQ Trust posted 456% returns over ten years, with 46% annual gains driven by AI stock concentration now matching historical bubble patterns. Market structure mirrors the 1995-2000 internet boom across global markets, with analysts warning of potential correction within 6-18 months as concentration risk reaches unsustainable levels.

