OpenAI submitted a confidential draft S-1 registration statement to the US Securities and Exchange Commission, the company announced on June 8, one week after rival Anthropic filed its own IPO paperwork [8][1]. The filing does not commit OpenAI to a specific timeline, price range, or offering size, and the company stated that "it may be a while because there are things we want to do that are likely easier as a private company" [3][5]. OpenAI separately noted it expected the filing to leak and chose to announce it preemptively [5].

The submission follows a period of rapid private fundraising. OpenAI raised $110 billion at a valuation of roughly $840 billion, reports more than 900 million weekly ChatGPT users, and generates approximately $2 billion in monthly revenue [1][4]. A renegotiated partnership with Microsoft accompanied the fundraising [4]. Multiple outlets, citing Reuters, reported that CEO Sam Altman is targeting a valuation near $1 trillion at the time of listing [9][11]. CFO Sarah Friar is orienting the company toward a 2027 debut, though advisers believe a late-2026 listing — possibly as early as September — is feasible [12][9].

The filing also follows the resolution of a legal dispute that several outlets described as a barrier to going public. Elon Musk sued OpenAI, accusing its executives of converting a nonprofit into a vehicle for private enrichment [1][4]. A US jury unanimously ruled against Musk in May 2026 [1][4]. Corriere della Sera had earlier flagged the Musk litigation as a risk factor for the IPO alongside competition from Anthropic and regulatory uncertainty [14].

Financial analysts offered competing assessments of what the filing means for the broader market. Michael Ashley Schulman, a partner at Cerity Partners, said OpenAI "is keeping options open as Anthropic edged ahead with its filing after a monster funding round" and that an eventual listing "could accelerate the narrative that artificial intelligence is infrastructure, pulling more public capital into the sector" [2]. Gil Luria, managing director at D.A. Davidson, warned that "what OpenAI does not want is for the public market capital to exhaust itself," noting that SpaceX and Anthropic are ahead of OpenAI in the IPO queue and that large public competitors such as Google can raise tens of billions through secondary issuances [2][4]. Adam Sarhan, chief executive of 50 Park Investments, said OpenAI is "likely waiting to see how the market reacts to the other largely anticipated IPOs before announcing the timing" [2].

The question of whether public markets can absorb multiple trillion-dollar offerings in quick succession drew attention from analysts and outlets across several countries. Bank of America strategist Michael Hartnett warned that the IPOs of SpaceX, OpenAI, and Anthropic could push the technology sector's weight in US equity indices toward 48 percent, a level reminiscent of the dot-com era [20]. El País reported that all three companies remain unprofitable, a point echoed by DW News and France 24 [20][3][4]. Josef Schuster, CEO of IPOX, said the three companies "are now engulfing onto the public markets to finance their massive growth" and that markets "will be relentless in rewarding and punishing as their fundamental profile builds over time" [2].

Jake Dollarhide, CEO of Longbow Asset Management, offered a different lens on investor behavior, arguing that retail investors will choose AI stocks based on personal product loyalty rather than traditional financial analysis. "Some use Claude and live and die by it, and some use Chat GPT and live and die by it, and so I think you're going to get very specific investors who use those services who want to buy that stock," he said [2].

Smaller AI companies are watching the outcome closely. Perplexity CEO Aravind Srinivas said his company plans a 2028 IPO regardless of how the OpenAI and Anthropic listings perform, but acknowledged that "there will be ripple effects if they don't go well" [6]. He described the SpaceX IPO, expected this week, as "a leading indicator of how Anthropic or OpenAI will go out" [6]. Perplexity Chief Business Officer Dmitry Shevelenko said that "by consistently holding 2028 as our earliest date for an IPO, Perplexity has been able to build a healthy, high-growth business" [6]. Srinivas separately told CNBC that Anthropic and OpenAI deserve high valuations due to their pace of innovation but warned that any slowdown could hurt valuations across AI startups [19].

Outside the United States, the filing prompted analysis of its geopolitical implications. Chinese-language coverage on Sina examined how a trillion-dollar OpenAI listing could create a capital "siphon effect," drawing investment toward US AI infrastructure and compounding challenges for Chinese AI firms already constrained by chip export controls and model capability gaps [16][13]. Sina Finance separately reported investor skepticism about whether OpenAI's valuation relative to its revenue is sustainable [13].

African-focused analysis from Morocco-based Clarodigi highlighted a different dimension, arguing that OpenAI's fundraising and planned IPO could deepen the technological dependency of African tech ecosystems on US-built foundation models, while also noting opportunities for local entrepreneurs building vertical AI applications on top of those models [17].

OpenAI's conversion from a nonprofit to a Public Benefit Corporation — a structural change completed in October 2025 — was noted by Euronews as a governance factor relevant to the IPO [10]. No securities regulators, AI safety researchers, or OpenAI employees have been quoted publicly on the implications of the filing.

The company has not disclosed which investment banks are advising on the offering, though Turkish outlet CNBC-e reported that Goldman Sachs and Morgan Stanley are involved and that OpenAI seeks to raise at least $60 billion [11]. The next expected signal for the AI IPO cohort is the market reception of SpaceX's listing, which multiple analysts identified as a bellwether [6][2].