Google Stock Strength Hides Surging Margins Despite AI Cost Surge

Shares in Google's parent company have continued to perform strongly despite a sharp rise in spending on artificial intelligence and data-centre infrastructure, as recent financial results showed solid revenue growth and improving profit margins.

The figures, released by Alphabet Inc, show the company increasing investment in AI and cloud computing while maintaining profitability across its core operations, including advertising and search.

The results have attracted attention across the technology sector, where heavy AI spending has raised questions about whether rising costs will begin to weigh on margins as companies expand computing capacity.

Earnings Growth Amid Rising Investment

Alphabet's latest quarterly earnings, covering the final three months of 2025, showed revenue of $113.8 billion (about £84 billion), up 18 per cent on the same period a year earlier. Net profit rose to $34.5 billion (approximately £27.6 billion), exceeding market expectations.

Growth was supported by digital advertising, search and cloud services, with all major divisions reporting higher revenue. The company said demand for cloud computing and AI-enabled products remained strong, particularly among enterprise customers.

Alongside the results, Alphabet outlined plans to significantly increase capital expenditure in 2026. Spending is forecast to reach between $175 billion and $185 billion (about £127 to £135 billion), almost double the level recorded in 2025, as the company expands servers, data centres and custom hardware to support AI development.

Margins Hold Up Despite Cost Pressures

The scale of the planned investment has prompted concern among some investors about its potential impact on profitability. Alphabet's shares fell briefly after the spending guidance was announced.

However, financial data show that margins have continued to improve. Alphabet's net profit margin rose to just over 32 per cent during the quarter, compared with about 28 per cent a year earlier.

The company has benefited from higher advertising revenue and improved performance at its cloud division, which reported year-on-year revenue growth of close to 50 per cent. Executives said efficiency gains, infrastructure optimisation and tighter cost controls had helped offset part of the expense associated with AI operations.

Cloud And AI Support Revenue Growth

Alphabet's expanding cloud business has become an increasingly important contributor to revenue, reducing reliance on advertising alone. Cloud services also tend to deliver higher margins as enterprise customers commit to longer-term contracts and platform usage.

AI tools integrated across products operated by Google, including search and productivity services, are also beginning to contribute more directly to revenue, according to the company. Alphabet said it has focused on improving how AI products are monetised while managing the cost of running large-scale models.

Balancing Investment And Returns

Alphabet's share price has risen over the past year, reflecting confidence in its ability to fund large-scale investment while maintaining earnings growth. The company's market value briefly approached four trillion dollars during recent trading, outperforming several other technology firms heavily focused on AI development.

Nevertheless, questions remain about how long margins can continue to expand if capital spending rises further or revenue growth slows. Alphabet has said it expects investment levels to remain elevated as competition in AI and cloud services intensifies.

For now, the company's latest results suggest it has been able to balance rising costs with revenue growth, leaving markets focused on whether that balance can be sustained as AI investment continues.