SpaceX IPO Hits $2.1T Market Cap as OpenAI & Anthropic Gear Up for Public Debuts

For the AI industry, the impending IPOs of OpenAI and Anthropic represent a watershed moment that will move the sector from private benchmark to public accountability. With SpaceX’s stellar debut setting a high bar, AI’s most prominent labs must now convince public markets that their large language models can generate sustainable profits, not just hype. The filings with the SEC open a window into revenue sources, customer concentration, and competitive moats—details that could reset valuations across the entire AI startup ecosystem.

The public market debut of SpaceX on Friday not only rocketed the company to a $2.1 trillion valuation but also fired the starting gun on what could be a historic wave of initial public offerings from the most-hyped names in artificial intelligence. SpaceX shares opened at $150, surged as high as $176.52, and closed at $160.95 — a 19.2% first-day gain that made Elon Musk's aerospace venture the sixth-largest publicly traded company in the U.S., surpassing even Tesla. The offering, which involved the sale of 555.6 million shares at a target price of $135, aimed to raise up to $75 billion, underscoring the immense liquidity and investor appetite for frontier technology companies. While SpaceX is not an AI pure-play, its spectacular entrance closely follows the preliminary IPO filings of ChatGPT-maker OpenAI and Claude creator Anthropic, two AI-native firms that have come to define the generative AI boom.

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SpaceX shares opened at $150, surged as high as $176.52, and closed at $160.95 — a 19.2% first-day gain that made Elon Musk's aerospace venture the sixth-largest publicly traded company in the U.S., surpassing even Tesla.

The surge of these names onto public markets arrives at a moment of extraordinary fervor for artificial intelligence. Nvidia, the AI chip giant, commands a market cap of $5.2 trillion, and the technology sector as a whole has been propelled by expectations that large language models will reshape entire industries. For OpenAI and Anthropic, which have nurtured sky-high private valuations through multibillion-dollar funding rounds, the transition to public ownership will bring a new level of scrutiny over revenue trajectories, unit economics, and governance structures. SpaceX's first-day pop may embolden these AI startups to accelerate their own timelines, betting that retail and institutional investors will assign similar premiums to firms positioned at the heart of the AI revolution.

However, financial experts are sounding a note of caution that resonates particularly strongly for AI companies. Brianne Gardner, senior wealth manager of Velocity Investment Partners at Raymond James Ltd., notes that while IPOs often enjoy a strong first day due to hype, many underperform the broader market over the subsequent years. She advises investors to wait five to seven months after a debut, allowing the initial euphoria to cool, and then evaluate the business like any other investment — scrutinizing financials, valuation, insider activity, and technicals before committing capital. This counsel is especially pertinent for AI firms like OpenAI and Anthropic, many of which are not yet profitable and rely on selling a future vision of earnings that could take years to materialize. The risk is that public markets, which are less forgiving than private venture backers, may impose a harsh reality check if growth decelerates or competitive pressures intensify.