OpenAI's Resurgence: GPT-5.6 & Codex Drive Stock Demand

Investment demand for OpenAI's unlisted shares is picking up again in the secondary market. Investor attention had focused on Anthropic earlier this year. However, sentiment is shifting back to OpenAI as it releases new AI models and expands enterprise services. Here's the thing: Both OpenAI and Anthropic are not publicly traded. Retail investors buy stakes held by existing employees or early investors. The market previously assessed a sharp decline in investor sentiment for OpenAI during the first quarter due to concerns about slowing growth, management changes, health issues, competition, and a lawsuit. Dave McClure, from Practical Venture Capital, says the mood has changed over the past month, with investment demand recently reviving. What's interesting is that Anthropic still holds an advantage. Glenn Anderson, CEO at Rainmaker Securities, notes more investors are still seeking Anthropic shares than OpenAI. However, buy bids for OpenAI shares have noticeably increased compared to a month ago. Product competitiveness is a key factor in this recovery. OpenAI recently unveiled GPT-5.6 Sol, and later launched GPT-5.6 Terra and the low-cost GPT-5.6 Luna. GPT-5.6 Sol showed strong performance in benchmarks, though it was somewhat behind Anthropic's latest models, Claude Mythos and Fable. Growth in enterprise services is also.