OpenAI closed a $110 billion funding round in late February 2026, the largest venture capital raise in history. The company announced an infrastructure partnership with Amazon Web Services alongside the funding.
The capital influx arrives as financial markets face headwinds. The S&P 500 declined 0.4% during the same period, driven by geopolitical tensions in Iran that pushed oil prices higher and gold futures above $5,250. Credit markets showed strain as business development companies BlackRock TCP Capital and MidCap Financial cut dividends, with shares falling 8-9%.
The funding round signals a divergence in investment priorities. While traditional markets experience volatility, institutional investors continue pouring capital into AI infrastructure. The AWS partnership positions OpenAI to scale computing capacity for model training and deployment.
Block shares surged 20% in after-hours trading during the same week, suggesting sector-specific momentum independent of broader market conditions. The contrast highlights how AI and fintech companies attract capital despite macro uncertainty.
The $110 billion raise exceeds previous mega-rounds by multiples. Earlier AI funding leaders like Anthropic raised $7.3 billion across multiple rounds, while OpenAI's previous largest raise stood at $13 billion from Microsoft in January 2023.
The AWS deal provides OpenAI access to cloud infrastructure at scale. Amazon Web Services controls approximately 32% of the global cloud market, offering compute resources essential for training large language models. The partnership terms were not disclosed.
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. The company remains unprofitable as it invests in compute capacity and model development.
The funding environment reflects a bifurcated market. Safe-haven assets gained as gold hit record highs, while specific technology sectors commanded premium valuations. Tightening financial conditions affected debt-dependent businesses, evidenced by dividend cuts at TCP Capital and MidCap Financial.
The OpenAI-AWS partnership intensifies competition among hyperscalers. Microsoft maintains a separate infrastructure deal with OpenAI worth $13 billion. Google Cloud and Oracle have pursued similar arrangements with AI companies including Anthropic and Cohere.