Just caught something interesting from the latest 13F filings. Daniel Loeb's Third Point hedge fund has been making some notable portfolio adjustments, and there's a clear pattern emerging that's worth paying attention to.

So here's what went down in Q4. Loeb trimmed positions in Amazon and Microsoft - sold about 23% of his Amazon stake and 16% of Microsoft. But here's the thing: he didn't just sit on the cash. He plowed money into Nvidia instead, which has had an absolutely impressive run. We're talking over 1,200% gains since 2023. That's the kind of move that tells you something about where smart money is positioning itself.

Now, before anyone panics about their Amazon or Microsoft holdings - Loeb's still holding both. They're literally the third and fourth largest positions in his portfolio, each representing over 6% of assets. So this wasn't a full exit, just a strategic trim. The guy clearly still believes in these companies, just maybe not as much as he believes in the AI infrastructure play.

Let me break down what's actually happening here. Microsoft just posted 17% YoY growth, and their cloud division is crushing it with a multi-year revenue backlog. Amazon's numbers are solid too - their cloud business just had its best quarter in over three years. Both companies are genuinely doing well. But here's where it gets interesting: both stocks have had a rough start to 2026, which actually makes them cheaper than they were in Q4. That's creating a bit of a buying opportunity, depending on how you look at it.

On a forward PE basis, Microsoft actually looks like the better value between the two. It's trading at a discount to Amazon, and given the growth trajectory and cloud momentum, I'd lean toward Microsoft as the more impressive value play right now. That said, I'm not sure I'd be aggressively selling either one like Loeb did. These are still quality companies with strong fundamentals.

But let's talk about why Loeb really loaded up on Nvidia. This company is genuinely in a different category. Their GPUs have become the backbone of AI infrastructure - there's basically no alternative at scale right now. The hyperscalers have guided for $650 billion in data center capex this year, and Nvidia's going to capture a huge chunk of that.

Their latest earnings were nothing short of impressive. Revenue came in at $68.1 billion, up 73% year-over-year, and they beat guidance by a meaningful margin. They told investors to expect $65 billion, so hitting $68.1 billion shows real momentum. The demand for their chips isn't slowing down anytime soon.

Here's what really stands out though: despite all this impressive growth and beat after beat, Nvidia's valuation isn't crazy. Trading at 25x forward earnings puts it near the cheapest it's been in three years. That's remarkable when you consider the growth rate and market position. Most companies growing at this pace would be valued way higher.

So the question becomes: should you follow Loeb's move and load up on Nvidia? Honestly, I think there's a case for it. The company continues to dominate its market, the demand environment is strong, and the valuation still looks reasonable for the growth you're getting. But I wouldn't necessarily dump Microsoft or Amazon to do it.

The way I see it, all three have merit depending on your strategy. If you want exposure to the AI infrastructure theme with impressive growth potential, Nvidia is the obvious choice. If you want quality companies trading at reasonable valuations with strong cash flows, both Microsoft and Amazon fit the bill. Microsoft edges out Amazon on value metrics, but both are solid holdings.

What's interesting about Loeb's move isn't that he thinks Amazon and Microsoft are bad - he clearly doesn't, since he's still holding significant positions. It's more that he sees an even more compelling opportunity in Nvidia. And when you look at the numbers, it's hard to argue with that logic. The AI infrastructure play is just hitting a different level right now, and Nvidia's in the pole position.

If you're sitting on the sidelines trying to figure out what to do, I'd probably start by looking at valuations relative to your portfolio. Microsoft looks like the better entry point between the two mega-cap tech plays, but Nvidia remains the more impressive growth story if you can handle the volatility. Just remember that Loeb's positions are from end of December - markets have moved since then, so do your own analysis before making any moves.