German analysis of AI capex competition: which tech giant is overextending itself and who wins in capex consolidation.

Over 100 billion for AI: How Amazon, Microsoft and Alphabet are risking their own future

The latest earnings season from the tech giants has sent an unmistakable signal to financial markets: the era of unconditional growth at any cost has ended. Although Alphabet, Amazon, and Microsoft all reported impressive revenue increases in the second quarter of 2026 and drove their cloud divisions to historic record levels on the back of the artificial intelligence boom, Wall Street's reactions diverged sharply. While Microsoft and Amazon received double-digit share price gains, investors initially sent Alphabet's stock into a tailspin despite its rapid growth. The answer lies buried in the balance sheets: it concerns gigantic capital expenditures for AI infrastructure and the critical question of how much free cash flow remains after deducting these costs. Examining the quarterly figures reveals why the stock market has suddenly reset its standards and how the strategic positioning of the world's three most valuable companies differs fundamentally in the ultimate AI race.

**One quarter, three narratives: How billions in capital expenditures turned stocks into winners and losers overnight**

The three largest American technology companies released their second-quarter 2026 figures within a single week, and market reactions created the impression of three entirely different sectors. Alphabet, Amazon, and Microsoft all shared double-digit growth, cited their cloud divisions as growth engines, and invested enormous sums in artificial intelligence. Yet the market reactions were anything but uniform. While Microsoft's stock rose by double digits and Amazon's jumped similarly after its report, Alphabet initially struggled despite impressive growth rates, as investors viewed exploding capital expenditures with skepticism. This divergence is crucial: it shows that the stock market no longer asks simply how fast a company is growing, but critically how it finances that growth and whether it controls the resulting costs.

Alphabet reported revenue of $119.8 billion in the second quarter of 2026, a 24 percent year-over-year increase marking its twelfth consecutive quarter of double-digit growth. The cloud business particularly impressed, surging 82 percent to $24.8 billion, driven by strong demand for enterprise AI solutions and traditional Google Cloud services. Operating income climbed 30 percent to $40.8 billion, with operating margin improving to 34 percent. The most spectacular—yet ultimately misleading—figure was the 298 percent jump in net income, translating to earnings per share of $9.11. This extraordinary increase stemmed largely from a $98 billion non-operating gain on unrealized equity investment gains, which analysts largely disregarded when assessing true operational strength.

Investors' primary concern lay with the investment side. Alphabet nearly doubled its capital expenditures to $44.9 billion in the quarter, driven almost entirely by AI infrastructure expansion. Consequently, free cash flow swung to negative $5.9 billion for the quarter, though it remained positive at $53.3 billion over the trailing twelve months. The combination of rapidly rising expenses and short-term negative free cash flow initially sent the stock down more than three percent despite strong operating results, as investors remained uncertain about returns on these enormous investments. Notably, Alphabet's cloud order backlog increased by more than $50 billion sequentially to reach $514 billion, indicating enormous future revenue potential provided capacity can be deployed in time. The "Other Bets" division, which includes autonomous driving project Waymo, continued to record an operating loss of $1.8 billion on revenue of just $382 million, demonstrating that Alphabet is still making significant investments outside its core business without near-term return prospects.

Amazon delivered total revenue of $200.6 billion in the second quarter of 2026, surpassing the $200 billion mark in a single quarter for the first time in company history—a 20 percent increase from the prior year's $167.7 billion. The real star was Amazon Web Services (AWS), the cloud division, which grew 37 percent to $42.2 billion, its fastest growth rate in eighteen quarters. This brought AWS to an annualized revenue of $169 billion, significantly exceeding analyst expectations that averaged around $40.5 billion. AWS's operating profit reached $16.6 billion with an impressive 39 percent operating margin, meaning the cloud division now generates about 61 percent of Amazon's total operating profit despite representing only a fraction of group revenue.

At the group level, operating income rose 43 percent to $27.5 billion, while net income exploded to $62.6 billion—more than triple the prior year. Here too, a significant portion stemmed from a one-off non-operating effect: a $53.4 billion gain from the company's investment in AI firm Anthropic. Adjusted for this effect, solid operating growth remained, which convinced investors. Amazon's advertising business, now one of the group's most lucrative segments, grew 26 percent to $19.8 billion, underscoring how successfully Amazon has established its third pillar alongside retail and cloud. Amazon also faced massive capital expenditure increases: management raised its full-year investment forecast to approximately $220 billion, citing continued high demand for AI capacity expected to remain scarce through 2027 and 2028. Unlike Alphabet, investors reacted not with sell-offs but with share price gains of nine to twelve percent, as the market emphasized AWS's operational strength over the short-term investment burden.

Microsoft released results for its fiscal fourth quarter 2026, ended June 30, delivering perhaps the most compelling report of the three. Revenue rose 18 percent to $90 billion, significantly exceeding analyst expectations averaging around $87.7 billion. Operating income grew 18 percent to $40.6 billion, while net income under US GAAP increased 31 percent to $35.8 billion. Earnings per share reached $4.81 under GAAP, or $4.74 on an adjusted basis, well above the consensus estimate of approximately $4.24.

The real highlight was Azure cloud growth of 43 percent in the quarter, clearly exceeding both the company's own forecast and market expectations of around 40 percent. For the full fiscal year, Azure surpassed the $100 billion annual revenue mark for the first time—a historic milestone. Microsoft's total cloud revenue, including Azure, Microsoft 365, and other services, rose 27 percent to $59.3 billion. Particularly noteworthy was the 84 percent jump in commercial order backlogs to $678 billion, though a significant portion stemmed from a large OpenAI commitment, with underlying growth around 25 percent without this effect.

The crucial distinction with Alphabet lay in communication around capital expenditures. Microsoft spent $41 billion in the quarter, exactly in line with its previous forecast, and projected approximately $175 billion in coming fiscal year expenditures, consistent with its previously communicated calendar-year forecast of around $190 billion. This predictability, combined with news that efficiency gains in the existing data center fleet exceeded expectations, convinced investors that multi-billion-dollar investments would translate into revenue and margins. The stock subsequently surged more than 16 percent.