Key Takeaways:
US equity capital markets raised a record $251 billion in the first half of 2026, surpassing the 2021 peak as SpaceX's historic IPO and Alphabet's blockbuster equity raise reshaped the issuance landscape.
US initial public offerings and secondary share sales totaled $251 billion through June 26, excluding blank-check companies and other investment vehicles, according to data compiled by Bloomberg. That topped the previous half-year record set during the 2021 issuance mania, driven by two landmark transactions: SpaceX's $86.2 billion listing — the largest IPO in history — and Alphabet Inc.'s $85 billion stock financing to bankroll its artificial intelligence expansion.
"Even if you take out SpaceX's IPO, volumes are advancing rapidly," said Will Connolly, co-head of equity capital markets in the Americas at Goldman Sachs. "There's a lot of activity across the ecosystem and across different products. It's really the first time you could say that since 2021."
SpaceX made its Nasdaq debut on June 12 under the ticker SPCX, pricing at $135 per share before opening at $150 and touching an intraday high of $176.52. Exercise of the underwriters' greenshoe brought cumulative proceeds to $86.2 billion. The company, which operates the Starlink satellite internet service and a fleet of reusable rockets, acquired Elon Musk's AI venture xAI in February. SpaceX shares subsequently fell sharply, shedding roughly $400 billion in market capitalization across a four-session losing streak that included a 16% single-day decline, though the stock has held above its IPO price. Days after the listing, SpaceX entered the public bond market with a senior unsecured notes offering targeting at least $20 billion, with proceeds earmarked in part to repay a bridge loan and fund its AI infrastructure buildout.
The record-breaking half signals a structural shift in how companies finance themselves. AI infrastructure's enormous capital requirements have become the primary engine of equity issuance, with Connolly noting that the market is undergoing a paradigm shift where raising equity capital for AI data centers matches strong investor demand. Newly listed companies have rewarded that demand: Bloomberg data show 2026's crop of US debutants — stripping out blank-check vehicles — has generated a weighted-average return approaching 16%, roughly double the pace of the S&P 500 over the same stretch.
Private equity exits set to accelerate
JPMorgan Chase's Keith Canton, who heads private capital advisory and solutions globally, said he expects a comparable crop of billion-dollar-plus listings before year-end, with buyout-backed companies as a primary source. "Some of their companies are very high quality and very large, so they may have outgrown M&A as an option, so I'd expect to see some of them start to come to the public market," Canton said.
Among the candidates: Brookfield's data center company Csquare is preparing to launch its formal roadshow, capitalizing on the AI theme. Roark Capital-owned Inspire Brands and Blackstone-backed sandwich chain Jersey Mike's Subs have both filed confidentially for IPOs, with listings expected in the coming months. SK Hynix, the South Korean memory chip maker, is planning a roughly $29 billion US listing that could serve as a major catalyst for the third quarter.
Third-quarter window narrows as risks mount
Morgan Stanley's co-head of global equity capital markets Arnaud Blanchard cautioned that second-half activity is likely to be front-loaded into the third quarter. "While Q4 is typically a constructive window, we could see some volatility around the midterm elections and so second half activity is likely to be front-loaded into Q3," he said.
The timing calculus is complicated by two factors: the Federal Reserve's policy path — markets have priced out rate cuts for 2026 and traders are positioning for possible hikes — and the November congressional midterm elections. Both variables influence issuers' window selection. Eleven US companies have already raised over $1 billion each in IPOs this year, matching the record pace of 2021.
Not all signals are bullish. OpenAI's decision to delay its IPO plans to 2027 has prompted some investors to reassess AI valuation assumptions. Cerebras Systems, the AI chip designer that raised $6.38 billion in a heavily oversubscribed May IPO, has seen its stock retreat to near its offer price within a month of trading. The sustainability of the issuance boom will depend on whether AI-linked stocks can maintain their momentum and whether investor appetite can broaden beyond the technology sector.
This article is for informational purposes only and does not constitute investment advice.
