When a chart starts screaming
Semiconductor stocks just got a history lesson nobody asked for. In a Friday note, Bank of America strategist Michael Hartnett said the SOX index is trading 62% above its 200-day moving average — a level he says has only shown up twice in modern market history: at the peak of France’s Mississippi Bubble in 1720 and the Nasdaq’s dot-com blowoff in 2000.
Not a crash call, but definitely a stretch
Hartnett isn’t saying semis are fake. He’s saying the price action is doing a very convincing impression of something that usually ends with everyone regretting their enthusiasm. The setup he points to includes:
- exponential price moves
- heavy market concentration
- volatility getting squashed
- bond yields getting dragged higher by stocks, instead of the other way around
That’s the kind of cocktail that makes traders start mumbling about “melt-up” scenarios, which is finance-speak for “this feels great until it doesn’t.”
Why investors should care
This kind of deviation from trend is more of a fragility warning than a timing signal. In the past, markets stayed overextended for a while before the floor gave out. Translation: you don’t need a giant disaster to break the trade — sometimes a tiny spark is enough once everyone is crowded in the same boat.
Big picture: the AI and chip boom may still have real economic legs, but Hartnett’s point is that prices may already be behaving like they’ve skipped several chapters ahead in the story.
