Amazon and Microsoft Gain Nearly $445 Billion in Market Value Post Midterm Elections

On November 4, 2026, Amazon and Microsoft collectively added nearly $445 billion in market value, a substantial increase attributed to the results of the recent US midterm elections. With Democrats winning control of both the House and the Senate, investors perceived these cloud giants as beneficiaries of the political shift.

During the trading session, Amazon's shares rose between 7% and 7.7%, while Microsoft experienced an increase of approximately 5% to 7%. Microsoft was responsible for the bulk of the gains, contributing around $250 billion to the total market value increase. This surge follows a record $450 billion market-cap increase for Microsoft in late July 2026, driven by a strong earnings report.

The election outcomes extended beyond Congress, with Democrats also securing key gubernatorial victories in Texas, Ohio, and Georgia. Additionally, local voters in several states approved restrictions on new data center constructions. The market rally reflects expectations that a Democratic-controlled Congress may introduce regulatory measures favoring established tech companies with extensive data center networks.

Both Amazon and Microsoft entered November on the back of robust earnings from their cloud computing divisions. Amazon Web Services reported a 39% growth, while Microsoft projected Azure growth exceeding 45% for the upcoming quarter. In response to this demand, Amazon has raised its 2026 capital expenditure forecast to $220 billion.

Investors will be closely monitoring several factors moving forward, including whether Microsoft achieves its anticipated Azure growth, the implementation of data center restrictions, potential regulatory changes from the new Congress, and the ongoing capital expenditures aimed at meeting AI-driven cloud demand.