Will OpenAI's valuation hit (HIGH) $2.0T by December 31?

Prediction markets put the probability at 26%: Will OpenAI's valuation hit (HIGH) $2.0T by December 31. Currently, markets see this as unlikely (26% YES). OpenAI’s IPO has a Sam Altman problem | Reuters.

What’s Happening

OpenAI is preparing to confidentially file for an initial public offering as soon as this week, working with Goldman Sachs and Morgan Stanley on a deal that targets a September 2026 public debut, according to multiple reports. The filing follows the resolution of Elon Musk's lawsuit against the company, which had been viewed as a key legal overhang ahead of any market debut. CEO Sam Altman is pushing toward listing the company at a valuation that could exceed $1 trillion, positioning OpenAI alongside SpaceX and Anthropic in a competitive race to public markets. The question of whether OpenAI's valuation hit (HIGH) $2.0T by December 31 hinges directly on pricing dynamics during this filing window. [OpenTools, May 21]

Polymarket traders currently price OpenAI, Anthropic, and SpaceX to trade at first-day valuations north of $1.4 trillion, with Kalshi traders pricing a 92% chance that at least one of the three lists publicly in 2026. SpaceX officially filed its public debut paperwork on Wednesday, May 20, targeting roughly $1.75 trillion, a figure analysts have flagged as a possible yardstick for OpenAI's own pricing. ChatGPT reportedly commanded a 54% share of the consumer AI assistant market in recent data, supporting the bull case for premium multiples. A debut at or above SpaceX's level would push both companies past Berkshire Hathaway in market capitalization on day one of trading. [CNBC, May 21]

Reuters Breakingviews flagged a "Sam Altman problem" overhanging the IPO, citing governance and key-person concerns that could compress the valuation range bankers ultimately set. Redpoint Ventures' Erica Brescia noted that retail investors would gain rare direct access to a frontier AI company, though current reporting consistently anchors expectations around the $1 trillion mark rather than the $2 trillion threshold the market is testing. For OpenAI's valuation hit (HIGH) $2.0T by December 31 to resolve YES, pricing would need to roughly double consensus banker estimates within approximately seven months. Anthropic separately is reported to be approaching its first profitable quarter, intensifying competitive comparisons that will shape final book-building. Next milestones: confidential S-1 filing, SEC review window, and the targeted September roadshow. [Reuters, May 21]

Traded on Polymarket — $50K Volume

Lower-volume market on Polymarket ($50K). Wider spreads expected — enter with limit orders and be aware of slippage risk. Currently 26c YES.