AI Stocks Defy Gravity as Investor Sentiment Hits 20-Year Lows—Is This the Top or Just the Start?

There’s something deliciously absurd about watching equity markets rip to new highs while every sentiment gauge in the book flashes full-blown despair. Welcome to 2026, where the Nasdaq’s AI-fueled melt-up is colliding headlong with the lowest key investor indicator readings since 2004. If you’re looking for a market that’s both over-loved and under-owned, this is it.

Let’s talk numbers. The Nasdaq 100 ETF (QQQM) just posted another week of gains, led by the usual AI suspects. XLK, the tech sector ETF, sits frozen at $195.74, refusing to give up an inch after a record run. Meanwhile, Dow futures are off 200 points pre-market, a rounding error in the context of the past month’s relentless bid. The S&P 500 has become a parody of itself, defying every warning about valuations, macro headwinds, and the supposed AI bubble. Jack Manley at JPMorgan calls it “resilient.” That’s one word for it. Another might be “irrational.”

But under the hood, something is off. Seeking Alpha reports that a key investor indicator, likely the AAII Bull-Bear spread or a similar sentiment gauge, hasn’t been this low since the mid-2000s. Translation: everyone is either hedged, hiding in cash, or outright short. Yet the market refuses to crack. If you’re a trader, this is the kind of setup that makes you question your sanity. Are we at the start of a blow-off top, or is this the wall of worry that bull markets are built on?

The AI narrative is doing the heavy lifting. Every week brings another breathless headline about the multi-trillion dollar investment tsunami sweeping through the sector. Nvidia, Microsoft, and the rest of the AI complex are the new safe havens, with capital rotating out of everything else. The result is a market that’s both narrow and unstoppable. The breadth is atrocious, but the price action is undeniable.

Historically, these kinds of sentiment divergences don’t last forever. The last time investor sentiment was this low, the market was about to embark on a multi-year rally. But the context is different now. Valuations are stretched, the Fed is still lurking in the background, and geopolitical risk is off the charts. The Iran war’s cost to US households is now pegged at $100 billion, and while Treasury yields have dipped on ceasefire hopes, the macro backdrop is anything but stable.

So why are stocks still rallying? The answer is simple: there is no alternative. Cash yields are rolling over, bonds are stuck in purgatory, and commodities are flatlining. The only game in town is tech, and the algos know it. Every dip is met with a wall of buy orders, and the options market is pricing in more upside. The VIX is asleep, and realized volatility is near record lows. This is what a liquidity-driven melt-up looks like.

Strykr Watch

For traders, the levels are clear. XLK is camped at $195.74, with $200 as the next psychological barrier. The S&P 500 futures are flirting with 5,600, and any dip to 5,500 is likely to be bought. The Nasdaq 100 is in blue-sky territory, but watch for exhaustion signals, RSI is creeping into overbought, and breadth indicators are flashing warning signs. The options market is skewed to the upside, but implied volatility is starting to pick up in out-of-the-money puts. If the rally stalls, the unwind could be violent.

The risk is that the market has become a one-way trade. If AI stocks stumble, there is no safety net. The crowd is all on one side of the boat, and the exit is small. A Fed hawkish surprise, a geopolitical shock, or a disappointing earnings print could trigger a cascade. The sentiment setup is classic contrarian fuel, but timing the turn is a widowmaker’s game.

The opportunity is to lean into the trend, but with tight risk controls. Buy the dips in XLK and the mega-cap AI names, but don’t overstay your welcome. Use options to hedge downside, and watch for signs of exhaustion. If sentiment starts to turn, be ready to flip short. The best trades will be in the rotation, when the AI trade finally cracks, money will flow into the laggards. For now, the path of least resistance is higher, but the air is getting thin.

Strykr Take

This is a market that refuses to die, no matter how many warnings the bears throw at it. The AI narrative is too strong, and the liquidity is too deep. The top will come, but not yet. Trade the trend, respect the risk, and don’t get cute. The wall of worry is real, but it’s also the fuel for the next leg up.