S&P 500: Is Nvidia’s Sudden Reversal the Trigger for the Start of a Larger Market Shakeout?

Why the Selling Has Only Just Begun

If you’ve traded long enough, Thursday’s action should have set off alarms. Not because of the size of the selloff in the S&P 500 and Nasdaq, but because of what it revealed about market structure.

NVIDIA delivered exactly what bulls wanted—big beat, strong guidance, Huang pounding the table—and the stock still flipped from a 5% surge to a 3% loss. That wasn’t profit-taking. That was a message: buyers are thinning out at these levels.

Let’s be direct. This selloff is in its early stages, and if you’re not defensive, Friday and the weeks ahead could get rough.

The Perfect Setup That Failed

Heading into earnings, sentiment was washed out, short interest had climbed, and everyone expected NVIDIA to ignite another leg higher. It did—briefly. Then the rally died without a catalyst. That’s the tell. When great news can’t lift a market, when a “perfect setup” fizzles within hours, smart money is distributing into strength and leaving momentum traders holding the risk.

Valuation and Liquidity Are Now Headwinds

The market is finally starting to care about the math. Tech trades at about 30x forward earnings versus a long-term average near 22x. That’s a premium that needs either explosive earnings growth or more multiple expansion. With earnings season winding down and the Fed unlikely to cut, the expansion case is fading.

Meanwhile, liquidity—the fuel behind last year’s rally—is drying up. The Fed’s reverse repo facility has collapsed from $2.5 trillion to near zero. That money didn’t vanish; it moved into T-bills and money markets yielding 5%+. When cash pays 5%, the hurdle rate for equities jumps. Quantitative tightening continues grinding away, bank reserves keep falling, and now the marginal buyer that supported every dip is gone.

The Fed Put Is Gone

Traders hoping for a December rate cut should look at the repricing: odds have fallen from 96% a month ago to roughly one-third today. Recent Fed commentary isn’t helping—the warnings about “outsized asset prices” were a rare tell. That’s not a backstop. That’s the Fed signaling it’s comfortable with markets cooling off.

Breadth and Global Action Confirm It

Thursday’s tape showed real damage: 76% of NYSE stocks fell, the Nasdaq saw 82% of volume on the sell side, and the VIX jumped to 26 and held. Overseas markets picked up the baton overnight, deep in the red across Asia and Europe. That’s global follow-through, not a U.S.-only wobble.

The Playbook

Expect an early bounce Friday—then look to fade it. Rallies are getting shorter and weaker. This environment favors inverse ETFs, put spreads, or simply raising cash. Defense should be your default until liquidity, breadth, and Fed expectations turn—not just price.

The market showed its hand Thursday. Traders should pay attention.

More Information in our Economic Calendar.