AI Bubble Fears Return: S&P 500 Capex Survey Signals Tech’s Next Reckoning

If you thought the AI hype cycle had finally run out of road, think again. The latest survey numbers are in, and they’re not just eye-popping, they’re borderline absurd. Since November 2022, AI-related stocks have accounted for an estimated 90% of the S&P 500’s total capital expenditures. Let that sink in. In a market where war, oil, and macro shocks are supposed to be driving the narrative, it’s still the AI trade that’s eating everyone’s lunch.

For the first time in two decades, professional investors are openly talking about an AI bubble, and not in the “maybe it’s a little frothy” way. The mood has shifted from FOMO to “how much longer can this last before it all unravels?” The numbers don’t lie: Tech’s capex binge is unprecedented, dwarfing even the dot-com era’s excesses. The S&P 500’s tech sector is spending like there’s no tomorrow, and the market is starting to ask uncomfortable questions.

The timeline is telling. Since the Iran war headlines started dominating the news cycle, oil has surged, volatility has spiked, and most sectors are in risk-off mode. But tech? Still going full throttle on AI spending. The disconnect is glaring. While energy and industrials are bracing for supply shocks, the AI complex is acting like it’s immune to gravity. That’s not just optimism, it’s hubris.

Historical context matters. The last time a single theme dominated S&P 500 capex to this degree was during the telecom bubble of the late 1990s. We all know how that ended. The difference this time is the scale and speed. AI isn’t just a sector, it’s an arms race, and everyone is terrified of being left behind. The result is a feedback loop where every incremental dollar spent on AI infrastructure is seen as validation, not excess.

Cross-asset correlations are breaking down. Normally, a spike in volatility and a surge in oil would force a rotation out of high-beta tech. Not this time. The AI trade is so crowded that it’s become the new defensive play, at least until it isn’t. The options market is pricing in a sharp correction, but the spot market refuses to blink. It’s a classic setup for a blow-off top.

The real risk is that the AI bubble narrative becomes self-fulfilling. If everyone starts to believe that tech is overextended, the unwind could be brutal. The S&P 500’s reliance on a handful of mega-cap AI names is unprecedented. If the music stops, there’s nowhere to hide.

Strykr Watch

Technically, the S&P 500’s tech sector is stretched to the limit. Relative strength indicators are flashing overbought, and the capex-to-revenue ratio is at a 20-year high. Support sits near the 50-day moving average, but a break below that could trigger a cascade of stop-loss selling. Resistance is thin air, there’s no real ceiling until sentiment shifts. Watch for a spike in put/call ratios and a steepening of the volatility skew. If the AI trade unwinds, expect a sharp correction, not a gentle pullback.

The risk is clear: If earnings disappoint or AI adoption fails to deliver, the downside could be swift and severe. The bear case is that the S&P 500 is a house of cards, propped up by unsustainable AI spending. The bull case is that the AI revolution is just getting started, and the capex binge is justified. Either way, the risk/reward is asymmetric, there’s more to lose than to gain at these levels.

For traders, the opportunity is in the setup. Shorting the most overextended AI names with tight stops could pay off if the bubble bursts. For the brave, buying volatility via options is a way to play the correction without betting the farm. For everyone else, reducing exposure and waiting for a better entry is the only sane move.

Strykr Take

The AI bubble is real, and the market is finally waking up. The S&P 500 can’t keep riding this one trade forever. When the unwind comes, it’ll be fast and ugly. Don’t be the last one in the pool when the tide goes out.