OpenAI closed a $110 billion funding round in late February 2026, the largest venture capital raise globally, and announced an infrastructure partnership with Amazon Web Services. The investment dwarfs previous AI mega-rounds including Anthropic's $7.3 billion and OpenAI's prior $13 billion raise from Microsoft in January 2023.
The capital influx contrasts with turbulence across global markets. The S&P 500 fell 0.4% during the same period as geopolitical tensions in Iran pushed oil prices higher and drove gold futures above $5,250. Credit markets showed strain internationally, with U.S. business development companies BlackRock TCP Capital and MidCap Financial cutting dividends 8-9%.
The AWS partnership provides OpenAI access to cloud infrastructure across Amazon's global network, which holds approximately 32% of the worldwide cloud market. Computing capacity is essential for training large language models that power ChatGPT and other AI tools used internationally. Partnership terms remain undisclosed.
The deal intensifies competition among global hyperscale cloud providers. Microsoft maintains a separate $13 billion infrastructure arrangement with OpenAI. Google Cloud and Oracle have pursued similar deals with AI companies including Anthropic and Cohere across multiple markets.
Investor appetite for AI infrastructure persists despite mounting questions about return timelines. OpenAI's annual revenue run rate reached $3.4 billion as of December 2025, up from $1.6 billion a year earlier, though the company remains unprofitable. The funding environment reflects bifurcated capital flows, with safe-haven assets gaining as specific technology sectors command premium valuations.
Block shares surged 20% in after-hours trading during the same week, suggesting sector-specific momentum in fintech and AI companies independent of broader market conditions. Tightening financial conditions affected debt-dependent businesses globally, evidenced by dividend cuts and equity declines.