Will OpenAI's valuation hit (LOW) $750B by December 31?

As of September 2, 2026, Polymarket prices “Will OpenAI's valuation hit (LOW) $750B by December 31?” at 18% YES with $120K traded. No tracked wallet holds a position on this market, so there is no verdict.

Prediction markets put the probability at 21%: Will OpenAI's valuation hit (LOW) $750B by December 31. Currently, markets see this as unlikely (21% YES). both the sub-$500B and $500B–$750B buckets sit at 0%.

What’s Happening

As of late September, the question of whether OpenAI's valuation will hit (low) $750B by December 31 remains a central point of contention among investors tracking the company's capital structure. The most recent private market transactions have placed OpenAI's valuation at approximately $852B, a figure reported in mid-August that would seemingly clear the $750B threshold with ease [Instagram, Aug 12]. However, the market's current probability of 21% YES reflects deep skepticism about whether that paper valuation will be sustained or formally recognized in a liquidity event before year-end. A key factor is the ongoing $7B secondary share sale, which has been in development since at least early August and is structured as a tender offer allowing employees to cash out equity ahead of any potential IPO [CNBC, Aug 11].

The disconnect between reported valuations and market expectations stems from structural conditions in the private markets. Neil Sethi, a noted tech analyst, observed in late August that both the sub-$500B and $500B–$750B valuation buckets for a potential OpenAI listing currently sit at 0% probability, effectively ruling out a low-valuation IPO scenario [LinkedIn, Aug 23]. That same analysis noted a 24% drop (from 46% to 35%) in the probability that OpenAI would list publicly by December 31, 2026, suggesting that the timeline for any definitive valuation event is slipping. The tender offer, rather than an IPO, appears to be the primary mechanism for establishing a new valuation floor, but secondary market pricing can diverge significantly from primary rounds, especially when employees are selling large blocks of shares simultaneously.

Looking ahead, the critical catalyst for whether OpenAI's valuation hit (low) $750B by December 31 will be the closing price of the current $7B share sale, which is expected to set a new benchmark for the company. OpenAI has stated it has not decided when or whether it will proceed with an IPO, leaving the tender offer as the most concrete data point for the remainder of 2026 [Instagram, Aug 12]. Meanwhile, internal strategic shifts—including the impending rise of "ownerless agents" as independent economic actors, a concept championed by OpenAI's head of strategic futures Dean W. Ball—signal that the company's long-term value proposition may hinge less on current revenue and more on speculative AI infrastructure bets [Techmeme, Sep 02]. With prominent voices like Bindu Reddy publicly stating that "OpenAI will die," the 79% NO probability suggests the market is pricing in substantial execution risk despite the headline $852B figure [r/singularity, Sep 02].

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