Peter Thiel buys AI stock up 347,260% since IPO

Peter Thiel’s hedge fund just made one of its most dramatic portfolio pivots in recent memory. Thiel Macro completely exited its Nvidia position in the third quarter of 2025, cut its Tesla stake by 76%, and plowed the proceeds into Microsoft, a company that has returned roughly 347,000% since going public in March 1986.

Microsoft now accounts for approximately 34% of Thiel Macro’s total portfolio.

From chips to cloud

Microsoft’s Azure cloud platform provides the infrastructure where AI models actually run at enterprise scale. And its Copilot integrations are embedding AI directly into products used by hundreds of millions of workers daily, from Excel spreadsheets to Teams meetings.

Reducing the Tesla position by 76% reinforces this thesis. Tesla’s AI story, centered on autonomous driving and robotics, remains a longer-duration bet with significant execution risk. Microsoft’s AI revenue, meanwhile, is already showing up in quarterly earnings through Azure consumption growth.

A fund punching above its weight

Thiel Macro is not a behemoth by hedge fund standards. The fund’s assets have been reported in a range between $74 million and $419 million, depending on the reporting period and methodology.

Peter Thiel co-founded PayPal, made the first outside investment in Facebook, and co-founded Palantir, which itself has become one of the most closely watched AI-adjacent companies in public markets.

Thiel has been steadily selling portions of his personal stake in Palantir over the past couple of years. He remains Palantir’s largest individual shareholder, but the pattern of sales, millions of shares offloaded between 2024 and 2026, suggests a deliberate diversification strategy.

The more recent Q2 2026 filings reveal yet another pivot for Thiel Macro: the fund has built a significant position in Amazon, which now represents nearly $118 million, or about 28% of the portfolio. Between the Microsoft and Amazon positions, Thiel Macro has roughly 62% of its portfolio in two stocks.

What the Nvidia exit signals

Every major cloud provider is now designing silicon in-house. Microsoft has its Maia accelerator chips. Amazon has Trainium and Inferentia. Google has its TPUs.

The bigger picture for investors

Microsoft has exclusive commercial rights to OpenAI’s technology, the largest enterprise software distribution network on the planet, and a cloud business growing at double-digit rates. The company has delivered a 347,000% return since its IPO in March 1986.