It’s always fascinating to see what stocks some of the best investors in the world have decided to buy recently. In the latest Q4 2025 data, one stock in particular stands out.

The stocks in question are Amazon (NASDAQ:AMZN). There are always different views in the stock market, but investors seem to have radically different ideas about what to think about it.

Buyer and seller

During the last three months of 2025, Baupost Group – led by Seth Klarman – bought Amazon shares. This is striking given the company’s strategy and orientation.

Baupost is an investment company with a long-term value strategy. Klarman’s book on value investing is a dense, academic book that takes the importance of valuations extremely seriously.

Amazon isn’t typically considered a classic value stock, which makes Baupost’s move fascinating. But on the other side of the equation is Warren Buffett Berkshire Hathaway.

In Buffett’s last quarter as CEO of Berkshire, he sold more than 90% of his shares in the online marketplace and cloud computing company. Time will tell if it was a good move.

It’s unusual to find value investors with such radically different ideas. The company’s shares have fallen 12% since the end of the reporting period, but what should investors expect from this?

Everything based on artificial intelligence

Artificial intelligence (AI) creates an fascinating energetic for Amazon. Remarkably, this is both a threat and an opportunity for the company.

The risk is twofold. One is a potential challenge to the marketplace if users turn to ChatGPT or Gemini to start their shopping search, rather than Amazon’s online marketplace.

However, Amazon can offer customers something that its competitors cannot. Its scale means it can provide faster delivery and greater convenience when shoppers can find what they need in one place.

Second, the company is expected to spend $200 billion this year, most of it on data centers. If demand for AI is weaker than expected, it could result in vast losses.

On the other hand, if all goes well, getting a huge return on an investment of this size could be a unique opportunity. The decline in share prices seems to eliminate this possibility.

It’s also worth noting that Amazon is a major investor in Anthropic, a company that brings AI agent plug-ins to the market. So it stands to benefit from AI’s success in yet another large way.

What am I doing?

Klarman Buys While Buffett Sells illustrates why investors should apply their own mindset when it comes to buying stocks. Even the best in the industry don’t always agree.

When it comes to my own portfolio, I am in both camps. I didn’t buy shares in Q4, but the falling share price means I started increasing my stake in the company.

In Berkshire’s case, there is a chance the company will make purchases again in the last six weeks. But it will be another three months before investors find out about it with the next publication.