Alphabet said Monday it plans to raise $80 billion through stock sales as it accelerates spending on the computing infrastructure behind its artificial intelligence products.

The Google parent said the proceeds will be used to expand AI compute capacity and support what it described as unusually strong demand from both enterprises and consumers. The company said interest in its AI tools and services is currently outpacing available supply, pushing it to scale investment in the underlying infrastructure.

A $10 billion investment from Berkshire Hathaway is part of the broader plan. Alphabet also said it intends to raise $30 billion through underwritten offerings, which include $15 billion in depositary shares tied to mandatory convertible preferred stock. The remaining $40 billion is expected to come from an at-the-market offering program involving Class A and Class C shares, with that program set to begin in the third quarter.

Goldman Sachs, JPMorgan Chase and Morgan Stanley are serving as joint book-running managers for the underwritten offerings. Goldman Sachs is also acting as placement agent for the private transaction.

The announcement underscores how aggressively Alphabet is leaning into AI infrastructure as competition intensifies among the major cloud and platform companies. In April, the company raised its capital expenditure outlook for the year to as much as $190 billion, compared with a prior range of $175 billion to $185 billion. Chief executive Sundar Pichai has previously pointed to compute capacity as one of the biggest constraints facing the company as it tries to meet demand.

Alphabet is not relying on equity alone to finance the buildout. The company has already tapped debt markets multiple times this year, including a bond sale in February that exceeded $30 billion and another financing effort in Europe that brought in roughly $11 billion in sterling and Swiss francs. That followed a $25 billion bond issue late last year.

The spending surge reflects a broader trend across the tech sector. Alphabet, Microsoft, Meta and Amazon are expected to spend more than $700 billion combined on capital expenditures this year, according to market expectations. Some analysts believe the total cost of AI infrastructure could exceed $1 trillion in 2027.

Alphabet’s stock has more than doubled over the past year, outperforming other megacap technology companies as investors have rewarded the company’s AI push and improvements to its Gemini models. Even so, the shares fell in extended trading after the financing announcement.

Berkshire Hathaway has been steadily building its Alphabet stake since last year. Before Monday’s announcement, the position was valued at about $20 billion, making it one of the investment firm’s largest holdings. Berkshire’s earlier disclosure of a $4.3 billion position in Alphabet marked one of its biggest technology bets in years.

The latest capital raise highlights the scale of the infrastructure race now underway in artificial intelligence, where access to chips, power, land and supply chains has become a strategic priority for the largest technology companies.