Key Takeaways
- • Pershing Square's Q3 2026 shareholder letter argues Wall Street is mispricing Amazon, Microsoft, Meta Platforms, and Alphabet by fully counting AI capital spending while giving little credit to the revenue it could generate.
- • According to the letter, combined capex for the four hyperscalers is expected to rise from about $140 billion in 2023 to an estimated $740 billion in 2026, with projections suggesting it could top $1 trillion in 2027.
- • Hyperscaler earnings have grown about 27% on average, while their shares posted average gains of only about 8% year to date through early November 2026, versus 44% for semiconductors and 36% for technology hardware.
- • The letter estimates each gigawatt of AI data-center capacity costs $40-50 billion to build and could generate $15-20 billion in annual revenue, and argues hyperscaler revenue growth could beat consensus by 5-10 percentage points annually through 2029.
- • Pershing Square has bought Microsoft, Meta, and Amazon shares during capex-driven selloffs but sold its Alphabet position earlier in 2026.
Summary
Bill Ackman's Pershing Square Capital Management argues in its Q3 2026 shareholder letter that analysts are mispricing the four largest AI hyperscalers: Amazon, Microsoft, Meta Platforms, and Alphabet. The letter's central complaint is that forecasts reflect the enormous cost of AI infrastructure but give limited credit to the revenue those investments could produce.
According to the letter, combined capital expenditures for the four companies are expected to rise from approximately $140 billion in 2023 to an estimated $740 billion in 2026, and projections point to capex possibly exceeding $1 trillion in 2027. Ackman characterized this spending as "offensive rather than defensive," describing it as deliberate positioning rather than a reluctant cost of competing.
The letter highlights a gap between fundamentals and share performance. Earnings at the hyperscalers have grown about 27% on average, yet the group's shares gained only about 8% year to date through early November 2026. Over the same period, semiconductor stocks rose 44% and technology hardware gained 36%, suggesting investors have favored the suppliers of AI infrastructure over its buyers.
The letter's core economic argument rests on data-center returns. It estimates each gigawatt of new capacity could cost $40-50 billion to build and could generate $15-20 billion in annual revenue. Under current return assumptions, it suggests hyperscaler revenue growth could beat consensus estimates by 5 to 10 percentage points annually through 2029.
Pershing Square has acted on the thesis. The fund bought shares of Microsoft, Meta, and Amazon during price declines tied to capex concerns. Ackman discussed the Meta purchase on CNBC's Squawk Pod, saying the fund bought at a steep discount after the company announced its capital spending plans. The fund sold its Alphabet position earlier in 2026, so it currently holds three of the four companies its letter defends.
The article notes that the thesis depends on assumptions about pricing, demand, and utilization holding up for several years, and a spending trajectory toward $1 trillion leaves limited room for disappointment.
According to the letter, combined capital expenditures for the four companies are expected to rise from approximately $140 billion in 2023 to an estimated $740 billion in 2026, and projections point to capex possibly exceeding $1 trillion in 2027. Ackman characterized this spending as "offensive rather than defensive," describing it as deliberate positioning rather than a reluctant cost of competing.
The letter highlights a gap between fundamentals and share performance. Earnings at the hyperscalers have grown about 27% on average, yet the group's shares gained only about 8% year to date through early November 2026. Over the same period, semiconductor stocks rose 44% and technology hardware gained 36%, suggesting investors have favored the suppliers of AI infrastructure over its buyers.
The letter's core economic argument rests on data-center returns. It estimates each gigawatt of new capacity could cost $40-50 billion to build and could generate $15-20 billion in annual revenue. Under current return assumptions, it suggests hyperscaler revenue growth could beat consensus estimates by 5 to 10 percentage points annually through 2029.
Pershing Square has acted on the thesis. The fund bought shares of Microsoft, Meta, and Amazon during price declines tied to capex concerns. Ackman discussed the Meta purchase on CNBC's Squawk Pod, saying the fund bought at a steep discount after the company announced its capital spending plans. The fund sold its Alphabet position earlier in 2026, so it currently holds three of the four companies its letter defends.
The article notes that the thesis depends on assumptions about pricing, demand, and utilization holding up for several years, and a spending trajectory toward $1 trillion leaves limited room for disappointment.
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