OpenAI’s recent confidential IPO filing preparations, including work with Goldman Sachs and Morgan Stanley on a draft prospectus as of May 2026, represent the main catalyst shaping trader views on a potential 2026 listing. The company completed its shift to a for-profit public benefit corporation structure in late 2025, unlocking larger funding rounds and positioning it to raise tens of billions at valuations approaching or exceeding $1 trillion. Intense competition with rival Anthropic, which is also eyeing a late-2026 debut, adds urgency, while ongoing capital demands for large language model training and data center expansion continue to drive the push toward public markets. Key upcoming factors include regulatory review timelines after any confidential submission, overall stock market conditions, and whether OpenAI meets internal milestones ahead of a possible September or fourth-quarter window.