The other catalyst for Palantir Technologies is its push to recurring profitability. Businesses with sustainable moats that demonstrate their ability to generate a profit are often rewarded with a hearty valuation premium by investors.

On the flipside, valuation might be the biggest reason Ken Griffin, along with other billionaire money managers, sent shares of Palantir packing in the third quarter. As of the closing bell on Nov. 22, shares of the company were valued at more than 42 times Wall Street’s consensus sales forecast for 2025, as well as 137 times projected earnings per share (EPS). Both levels are consistent with bubble-like valuations that won’t be sustainable over the long run.

Additionally, since Gotham can only be used by the U.S. government and its allies, there’s a somewhat limited long-term opportunity for Palantir’s core profit-driving operating segment. Although Foundry is growing like a weed, it’s not yet the proven operating platform that Gotham is.

More than likely, Palantir’s near-parabolic increase in its share price won’t be sustainable.

Perhaps even more surprising than Griffin overseeing the sale of most of his hedge fund’s common-stock stake in Palantir Technologies was witnessing he and his team reverse course on Wall Street’s artificial intelligence darling Nvidia (NASDAQ: NVDA) during the September-ended quarter.

After being a decisive seller of Nvidia stock during the second quarter, which is when Nvidia conducted its historic 10-for-1 stock split, Citadel’s hedge fund increased its holdings in this AI colossus by 194% during the third quarter. Once again, this increase occurred as Citadel’s put and call option positions in Nvidia were reduced, which demonstrates the ongoing hedges Griffin’s fund has in place.

The reason institutional investors and billionaire asset managers have piled into Nvidia is very simple: its unmistakable dominance in AI-accelerated data centers.

Nvidia’s graphics processing units (GPUs) accounted for an estimated 98% of shipments to data centers in 2022 and 2023, per TechInsights, and orders for its H100 GPU (commonly known as the “Hopper” chip) and Blackwell GPU are currently backlogged. Nvidia’s hardware is the preferred option as the brains that power split-second decision-making for high-compute data centers.

To add to the above, Nvidia’s pricing power and gross margin are undeniably benefiting from enterprise demand swamping supply. When the demand for a good outpaces supply, the law of supply and demand states the price of that good will rise until demand tapers. Nvidia has been netting $30,000 to $40,000 for its Hopper chip, which is double to quadruple the price point of Advanced Micro Devices Insight MI300X AI-GPU.

It should also be noted that no other company appears to be particularly close to challenging the computing capabilities of Nvidia’s GPUs. While competing chips may offer subtle advantages with select tasks, or perhaps be more energy efficient, they continue to play second fiddle to the computing potential of Nvidia’s hardware.

But there’s another side to the Nvidia story that Griffin and other optimistic billionaire money managers may be overlooking. For example, competitive pressures are beginning to crop up, as evidenced by the sudden gross margin decline Nvidia is contending with.

AI-GPU scarcity has played a critical role in boosting Nvidia’s pricing power and its gross margin. However, many of Nvidia’s top customers by net sales are internally developing AI-GPUs of their own. Even though these chips aren’t superior to Nvidia’s hardware, they’re cheaper and more easily accessible. When combined with AMD and other external rivals ramping production of their AI-GPUs, it’s easy to see how Nvidia’s pricing power and margins could wane in the coming quarters.

Nvidia is also contending with history, which has been anything but an ally of game-changing innovations over the last three decades. For 30 years, investors have consistently overestimated the early stage utility and adoption of new technologies and innovations, which has eventually led to a bubble-bursting event. There’s nothing that suggests AI or Nvidia is going to be the exception.

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Sean Williams has no position in any of the stocks mentioned. The Motley Fool has positions in and recommends Advanced Micro Devices, Berkshire Hathaway, Nvidia, and Palantir Technologies. The Motley Fool has a disclosure policy.

Billionaire Ken Griffin Sold 91% of Citadel’s Stake in Palantir and Nearly Tripled His Position in This Cutting-Edge Artificial Intelligence (AI) Stock was originally published by The Motley Fool