Just realized something interesting about Buffett's portfolio that most people are missing. While the Oracle of Omaha famously avoids chasing hot trends, he's quietly sitting on some of the best AI shares to buy right now through his massive $317 billion stock holdings.

Let me break down what caught my attention. His team has positioned Berkshire in three major tech plays that are all leveraging AI in different ways, and together they represent a significant chunk of the portfolio.

First up is Amazon at 0.7% of holdings. Most people focus on e-commerce when they think Amazon, but the real AI action is happening in AWS. They've got this insane $200 billion order backlog just sitting there waiting for data center capacity to come online. Amazon's spending $125 billion this year alone to build infrastructure. What's wild is they're not just renting compute - they built their own Trainium2 chips that cost 40% less than alternatives for AI training. Anthropic is already using 500,000 of these chips. This is exactly the kind of best AI shares to buy because it's infrastructure play, not just hype.

Then there's Alphabet at 1.7%. Google Search could've been crushed by ChatGPT, right? Instead they moved fast. AI Overviews and AI Mode merged search with AI-generated answers, and it actually worked - revenue acceleration for two straight quarters. Google Cloud has a $155 billion backlog and they're pumping out their own TPU chips to compete with Nvidia. The stock's up 62% this year. Berkshire just loaded up in Q3 2025, which tells you something about where they see value.

But here's the real position - Apple at 20.6% of the entire portfolio. Yeah, Buffett sold off most of his stake, but this is still their biggest holding. 2.35 billion active devices worldwide running Apple Intelligence. Every chip is optimized for AI while keeping battery life solid. That's a genuine competitive moat. The new iPhone 17 lineup is driving upgrade cycles way harder than expected.

The pattern here is interesting - Buffett's not buying pure AI plays like Nvidia. He's buying companies with existing customer bases that are using AI to supercharge their core business. That's actually the smartest way to think about best AI shares to buy in 2026. Real revenues, real infrastructure, real competitive advantages. Not just the chip suppliers everyone's obsessing over.

If you're looking at where to position your portfolio, this gives you a pretty good roadmap of what the smartest money is actually doing behind the scenes.