Wall Street is bracing for what bankers and analysts are calling the most concentrated IPO window in modern technology history. In coverage published on Sunday, May 17, outlets including Malay Mail summarised expectations that SpaceX, OpenAI and Anthropic could each price public offerings within roughly six months of one another — a sequence that, if it lands, would reshape index composition, retail brokerage flows and the market for AI compute capital all at once.
A roadshow calendar like no other
SpaceX is reported to be preparing a roadshow as soon as June, targeting a raise in the neighbourhood of $75 billion at a valuation that earlier reporting from TradingKey pegged at up to $1.75 trillion. OpenAI is widely expected to follow in the fourth quarter, aiming for a valuation around $1 trillion after its most recent private round closed at $852 billion on $122 billion of new capital. Anthropic, which has been raising aggressively in 2026, is reportedly targeting an October listing on the back of secondary-market valuations that recently brushed $1 trillion.
Added together, bankers cited in the coverage estimate a combined raise of more than $240 billion across the trio — a figure that dwarfs the 2014 Alibaba debut and the 2019 Saudi Aramco listing that long held the record for largest single IPO.
Retail access becomes the wild card
One reason the cluster is generating so much attention is the deliberate effort to channel shares to retail buyers. SpaceX has reportedly told underwriters it wants to reserve as much as 30% of its float for individual investors, dramatically above the 5–10% that is customary for U.S. listings. OpenAI's CFO Sarah Friar has also signalled that meaningful retail allocations are part of the plan. Anthropic has not yet detailed its approach.
For brokerages, that allocation policy raises the prospect of an unusual liquidity event — three of the most-watched private companies on earth listing in quick succession, with elevated retail demand competing for shares against the index funds and sovereign wealth pools that typically anchor deals of this size.
A stress test for the AI capital cycle
The coverage also frames the trio as a stress test for the broader AI capital cycle. Cerebras' Nasdaq debut earlier this month, which pushed the chipmaker's market capitalisation past $90 billion, has already been read as a barometer of investor appetite for pure-play AI exposure. Whether public markets can absorb three trillion-dollar-class listings on top of that — without crowding out smaller AI issuers waiting in the pipeline — is the question hanging over the back half of 2026.
Analysts quoted in the reporting cautioned that the timing is fluid: any pull-back in mega-cap tech multiples, a delay in OpenAI's restructuring, or a softer-than-expected SpaceX reception could push the calendar into 2027.
