OpenAI’s Potential $1 Trillion IPO Presents Significant Upside Opportunity for Microsoft’s Undervalued Holdings

OpenAI is reportedly targeting a valuation exceeding $1 trillion for its initial public offering, and no shareholder stands to benefit more than Microsoft (NASDAQ: MSFT) — a company currently experiencing its most challenging year in 2026 among the Nasdaq’s “Magnificent Seven” equities.

The partnership appears counterintuitive at first glance. Microsoft’s stock has depreciated approximately 19% in 2026 and trades nearly 30% below its 52-week peak. Yet the same company holds a roughly 27% stake in what many consider one of the world’s most valuable private technology firms — an investment that could soon carry a substantial public valuation.

So does the IPO valuation shift the investment thesis for an out-of-favor Microsoft? Let’s examine the numbers.

Valuation Analysis and Key Investment Metrics

Microsoft’s actual ownership position stems from its investment in OpenAI, which upon completing its restructuring into a public benefit corporation in October, disclosed a roughly 27% ownership on an as-converted diluted basis, currently valued at approximately $135 billion. The agreement not only granted Microsoft’s technology access rights through 2032 but also committed OpenAI to purchasing an additional $250 billion of Azure services.

Following June’s developments, OpenAI confirmed it had filed confidential paperwork with the Securities and Exchange Commission for an initial public offering—the first formal step toward a public listing. According to The New York Times, the company now favors a 2027 debut rather than late 2026, largely due to CEO Sam Altman’s reported refusal to accept a valuation below $1 trillion.

Here are the relevant figures for Microsoft shareholders. If OpenAI lists at $1 trillion, a 27% stake would be valued at approximately $270 billion—roughly double the implied value when the deal was executed, representing approximately 9% of Microsoft’s total $2.9 trillion market capitalization.

Nevertheless, several important caveats merit consideration.

The IPO timing and pricing remain speculative intentions rather than firm commitments. OpenAI will likely continue raising capital, which could dilute percentage ownership over time—a 27% figure that already reflects dilution from recent funding rounds. Additionally, a listing would provide Microsoft with a liquid, publicly-traded valuation for an asset previously valued with limited market visibility.

This transparency represents the primary opportunity. Embedded within 2026’s worst-performing large-cap technology stock sits an asset potentially worth nearly one-tenth of the company’s total market value, with an IPO forcing investors to finally establish a definitive market price.

Fundamental Business Performance Remains Strong

The primary foundation of Microsoft’s long-term investment case lies with its operating business rather than its OpenAI holding. The core business has continued growing robustly while its share price has struggled to keep pace.

In its fiscal third quarter ended March 31, 2026, Microsoft reported 18% year-over-year revenue growth to $82.9 billion, with earnings per share increasing 23% to $4.27. Azure and other cloud services revenue grew 40% year-over-year—an impressive rate for a business of that scale.

The stock’s challenge stems from the cost of maintaining this growth trajectory. Microsoft anticipates approximately $190 billion in capital expenditures for 2026, with roughly $25 billion of this attributed to higher component prices, where memory chips face global supply constraints. Investors have spent the year concerned that such substantial spending levels may compress margins for extended periods before generating adequate returns, prompting a re-rating of the equity.

This repricing, however, creates an attractive entry point. Microsoft currently trades at approximately 23 times earnings and roughly 20 times forward earnings—a discount relative to the premium valuation it commanded during most of the artificial intelligence boom, even as the company still achieves 18% annual revenue growth.

Where does this leave the stock?

In my view, this represents a compelling buying opportunity. With Azure growing at a 40% year-over-year rate and the stock trading at just 20 times forward earnings, the investment appears attractive even sans the OpenAI position. A potential OpenAI IPO merely adds incremental value; a $1 trillion debut would establish a public market valuation for a stake that has historically lacked such visibility.

That said, the $190 billion in capital expenditures must generate appropriate returns, and OpenAI’s ongoing net losses do impact Microsoft’s consolidated results, though the company’s non-GAAP metrics exclude this effect. At current valuations, with sustained growth potential, investors appear to be adequately compensated for their patience.

Investment Considerations

Before making any investment decision, investors should carefully evaluate their individual circumstances.

The Motley Fool Stock Advisor analyst team recently identified what they believe are the 10 best stocks for current investment consideration—and Microsoft was not among the selected equities. The ten companies chosen could deliver substantial returns in the coming years.

Consider when Netflix joined this list on December 17, 2004… a $1,000 initial investment at that recommendation would today be worth approximately $418,761. Or when Nvidia was featured on April 15, 2005… that same $1,000 initial investment would have grown to approximately $1,195,804.

Stock Advisor’s average return has exceeded 918%, significantly outperforming the S&P 500’s 208% cumulative gain. Don’t miss access to the latest top ten stock selections, available through Stock Advisor, and join an investment community created by individual investors for individual investors.

View the 10 stock recommendations

*Stock Advisor returns as of July 4, 2026.

Daniel Sparks and his clients hold no positions in the stocks mentioned. The Motley Fool has positions in and recommends Microsoft. The Motley Fool has a disclosure policy.

Microsoft’s substantial OpenAI stake and continued business growth present a compelling valuation opportunity for investors.

Source link