Key facts
- Defensive stocks in healthcare, materials, and consumer staples have rallied significantly this year.
- Energy stocks have been the market's top performer in 2026, up 52%.
- Bank of America's Bubble Risk Indicator is approaching risky levels.
- Falling Treasury yields suggest investors anticipate economic weakness or a "growth shock" from the AI trade.
Bank of America analysts have identified a "bubble-like" pattern in defensive stock rallies, drawing parallels to the period before the dot-com bubble burst. The bank's proprietary Bubble Risk Indicator has moved toward risky levels, signaling potential market overheating. This observation comes as healthcare, materials, and consumer staples sectors have shown strong performance, with energy leading due to oil price surges, while Treasury yields have fallen amid a sell-off in AI-related trades.