Amazon, Microsoft mint $445B in one morning as midterm sweep lifts tech

Amazon and Microsoft stacked on close to $445 billion in combined market value in a single morning on November 4, 2026. Both stocks traded near intraday records as the dust settled on the US midterms. Microsoft did the heavy lifting, adding roughly $250 billion of that total on its own. Amazon supplied the rest.

The political setup did the pushing. Democrats won control of both the House and the Senate, and also took key gubernatorial races in Texas, Ohio and Georgia. Investors read the results and decided the cloud giants came out ahead, betting a Democratic Congress could write rules that favor tech companies already sitting on sprawling data-center networks. Local voters weren't so generous: several states approved restrictions on building new data centers.

Microsoft shares rose by about 5% to 7% on the session, while Amazon climbed roughly 7% to 7.7%. It's familiar territory for Microsoft, which posted a record $450 billion market-cap increase in late July 2026 after a strong earnings report.

The rally didn't come out of nowhere. Both companies walked into November off cloud-fueled earnings. Amazon Web Services grew 39%, and Microsoft said it anticipated Azure growth above 45% for the coming quarter. They're spending to match: Amazon raised its 2026 capital expenditure forecast, now at $220 billion.

Investors watching these two have a short list to track. First, whether Microsoft actually delivers the Azure growth above 45% it anticipated. Second, how those voter-approved data-center restrictions get implemented at the state and local level. Third, whether the new Congress moves toward the regulatory framework the market appears to be pricing in.

Then there's the bill. Amazon's capex plans telegraph a belief that AI-driven cloud demand keeps accelerating, and the market is treating that spending as a bet worth making.