The 2026 Mega-IPO Pipeline: SpaceX, OpenAI, Anthropic, Kraken, and More

Introduction

The 2026 mega-IPO pipeline is the deepest in modern ECM history. SpaceX, OpenAI, Anthropic, Databricks, Cerebras, Kraken, and several other unicorn-tier issuers are all preparing to list, with combined potential demand of $100 to $200 billion (more than the entire 2025 US IPO market). SpaceX leads with a confidential S-1 filed April 1, 2026 ("Project Apex") targeting a $1.75 trillion valuation and $75 billion+ raise that would shatter Saudi Aramco's $29.4 billion 2019 record. The June 2026 SpaceX roadshow involves 21 banks, approximately 125 financial analysts, and an unprecedented 30 percent retail allocation. OpenAI targets $1 trillion, Anthropic $380 billion, Databricks raised $7 billion at $134 billion, Cerebras filed S-1 to compete in AI chips. The pipeline's depth represents a generational franchise opportunity and a structural setup that could produce one of the largest annual ECM volume years on record.

SpaceX's IPO is the centerpiece of the 2026 pipeline.

Mega-IPO

An IPO transaction at exceptional scale (typically $5 billion+ of proceeds and/or $50 billion+ market cap at pricing). Mega-IPOs require dedicated institutional capital absorption, multi-bank syndicates with substantial distribution depth, cornerstone investor anchoring, and careful calendar staggering. Recent benchmarks: Saudi Aramco ($29.4B in 2019), Alibaba ($25B in 2014), SpaceX 2026 ($75B+ target).

Filing and Valuation

SpaceX filed a confidential S-1 with the SEC on April 1, 2026, codenamed "Project Apex." The targeted valuation is $1.75 trillion (up from $1.25 trillion when SpaceX merged with xAI in February 2026). The contemplated $75 billion+ raise would surpass Saudi Aramco's $29.4 billion 2019 IPO as the largest in history by nearly 3x.

Roadshow, Bookrunners, and Retail Allocation

SpaceX plans to launch the roadshow the week of June 8, 2026. Approximately 125 financial analysts from the 21 banks on the deal are scheduled to meet the company the day before launch, and SpaceX plans to host 1,500 retail investors at a major investor event on June 11. Lead active bookrunners are Morgan Stanley, BofA, Citi, JPMorgan, and Goldman Sachs, with 16 other banks in smaller roles. SpaceX CFO Bret Johnsen has indicated retail will be a bigger part than any IPO in history, with retail potentially receiving an unprecedented 30 percent allocation (three times the Wall Street norm). SpaceX will list the entire company as one public entity rather than spinning off Starlink, combining launch services, Starlink, Starshield, and the merged xAI assets into a single listing.

The AI sub-segment of the 2026 pipeline is structurally important.

OpenAI and Anthropic

OpenAI crossed $25 billion in annualized revenue at end-February 2026 and is preparing toward a late-2026 or 2027 listing at a $1 trillion target. CFO Sarah Friar has signaled 2027 internally, while selected advisers see a late-2026 window if revenue compounds. Anthropic, valued at $380 billion, is in parallel discussions for a Q4 2026 listing potentially raising $60 billion+, with Wilson Sonsini Goodrich & Rosati (Google and LinkedIn IPO counsel) leading legal preparation.

Combined AI Pipeline

Combined SpaceX + OpenAI + Anthropic + Databricks demand is estimated at $100 to $200 billion, more than the entire 2025 US IPO market, representing a generational allocation opportunity for institutional investors.

Beyond the headline AI mega-IPOs, several adjacent issuers round out the 2026 pipeline.

Databricks, Cerebras, Kraken, Stripe

Databricks closed $7 billion equity and debt at $134 billion in early 2026 ($5.4B revenue, 65 percent YoY, positive FCF); the CFO has indicated "ready when it decides" without a fixed 2026 date. Cerebras Systems filed its S-1 positioning as an Nvidia chip alternative. Crypto exchange Kraken filed for a $20 billion listing extending the 2025 crypto-IPO cohort (Circle, Bullish, eToro), but suspended its IPO plans in March 2026 amid difficult market conditions, with its valuation reportedly resetting to roughly $13.3 billion. Stripe ($90 billion+ in its early 2025 buyback) is "in no rush" given profitability and secondary-market liquidity. Revolut ($75B confirmed funding-round valuation), Canva (most recent confirmed private valuation around $42B in 2025, with bull-case IPO estimates reaching $60-100B), and Shein ($50B) round out the international pipeline.

The 2026 mega-IPO pipeline above is the most structurally important component of the 2026 ECM outlook. The next article walks through the PE-backed sponsor IPO backlog, where the multi-year build-up of aging sponsor-backed assets is driving sustained 2026 IPO and follow-on activity beyond the mega-IPO headlines.