Anthropic (ANTH.PVT) is rapidly closing the gap with SpaceX (SPCX) for the largest initial public offering of 2026, according to prediction market data from Polymarket, as the AI company's revenue trajectory points toward a potential fourth-quarter market debut. Bloomberg reported that Anthropic's annualized revenue for 2026 is on track to exceed $65 billion, up significantly from the $47 billion pace recorded in May, signaling accelerating commercial momentum for one of artificial intelligence's most prominent players.

Market Context

The race for the year's largest IPO comes as both Anthropic and SpaceX represent transformative technology plays that have captured institutional and retail investor imagination. SpaceX officially began trading on the Nasdaq on June 12 after years as a private company, debuting at $150 per share and closing its first day at $160.95—a gain of 19.2% from its $135 initial pricing. The listing instantly created a $2.1 trillion market capitalization for Musk's space exploration company.

Analysis

Prediction markets are increasingly favoring Anthropic as the potential crown jewel of 2026 IPOs, even as SpaceX continues to command attention on Wall Street. The AI company's revenue acceleration from $47 billion to over $65 billion annualized represents a remarkable growth trajectory that has drawn comparisons to other high-multiple technology listings. Tom Essaye, founder of Sevens Report Research, offered cautious optimism about the competitive dynamic between these two mega-listings.

"In the end, betting against Elon Musk has been a fool's errand time and time again, and I think that's probably true this time," Essaye said on Yahoo Finance's Opening Bid. "So yes, I am a long-term bull on SpaceX. However, you better buckle up for some interim volatility, because we know this name is going to be wild."

OpenAI (OPAI.PVT), Anthropic's primary competitor in the AI race, has not appeared in Polymarket data as a contender for 2026's largest IPO despite speculation about a potential market debut later this year. The company carries an $894 billion valuation according to Yahoo Finance private markets data, trailing Anthropic's approximately $1 trillion assessment.

Key Numbers

- $65 billion: Anthropic's annualized revenue on track for 2026, up from $47 billion pace in May

- $135: SpaceX initial public offering price per share (June 11)

- $160.95: SpaceX closing price on first day of trading (June 12), representing a 19.2% gain

- $1.93 trillion: SpaceX current market capitalization at $146 per share

- $1 trillion: Estimated valuation for Anthropic in private markets

- $894 billion: OpenAI's estimated valuation in private markets

- 555.6 million: Number of shares offered by SpaceX in its IPO

What to Watch

Anthropic is expected to target a fourth-quarter public listing that could challenge SpaceX for the title of 2026's largest debut. The company's revenue acceleration will be closely monitored as investors assess whether its $1 trillion private valuation translates to sustainable public market multiples. SpaceX shareholders face potential lockup expiration pressures in coming months, which Essaye cautioned could introduce volatility despite his long-term bullish stance on Musk's company.

SpaceX shares have ranged from a post-IPO peak of approximately $225 down to lows around $104 as investors weighed capital expenditure requirements against the company's dominant market position in commercial spaceflight. The stock has since recovered to $146, maintaining its position among the world's most valuable companies.