As of 6/1/2026
The US equity market entered June at fresh records, with the S&P 500 near 7,600, the Nasdaq above 27,000 for the first time, and both indexes riding a ninth consecutive weekly gain. Beneath the economic data releases, a different signal has come back to life. After years of near silence, the market for new public companies has reopened, and it has done so with names that command attention. SpaceX filed to list on the Nasdaq, and on June 1, Anthropic confirmed it had confidentially filed for an initial public offering of its own. When the supply of new stock returns this conspicuously, it is worth asking what that supply is telling us, because issuance has historically been one of the more suggestive readings of how much risk investors are willing to take.
From Freeze to Thaw
In market terms, both initial public offerings and secondary offerings represent new equity supply, and when that supply rises quickly, investors must absorb more shares at a time when valuations are often already elevated. By that measure, the reopening is real, and it has been fast. In 2021, a record 311 US operating companies went public and raised roughly $119 billion. The window then slammed shut. Only 38 companies came to market in 2022, raising about $7 billion, the thinnest year for new issuance since the financial crisis. Issuance stayed depressed in 2023 at under $12 billion, then began to recover, reaching about $20 billion in 2024 and roughly $39 billion across 90 deals in 2025. The trajectory since the trough is close to a doubling each year. Global data tells the same story in real time. According to Dealogic, companies raised about $87.5 billion worldwide through late May, the highest year-to-date total since 2021.
The Temperature is Rising
Volume tells you the window is open. First-day returns tell you how warm the room is, because they measure how much investors are willing to pay above the offer price on the first day of trading. By that gauge, enthusiasm is building. The average first-day gain on 2025 listings was about 29 percent, the highest reading since 2020, though the median was a more restrained 14 percent. That gap, a high average against a moderate median, signals that the heat is concentrated in a handful of marquee deals rather than spread evenly across the class. For perspective, the dot-com peak years of 1999 and 2000 produced first-day averages of 71 percent and 56 percent, so today’s readings remain well short of those extremes, but the direction is noticeable.
What Heavier Issuance has Meant
Here the analysis turns from describing the present to testing the past, and the result is worth stating carefully. We sorted every year since 1995 into thirds by the inflation-adjusted dollar volume of IPO issuance, then measured how the S&P 500 performed over the following year. The years with the lightest issuance were followed by an average total return of about 17 percent, with a positive year nine times out of ten. The heaviest-issuance years were followed by an average of about 9 percent, with a positive year only six times out of ten. The two-year horizon shows the same shape. The relationship is modest rather than mechanical, and the dispersion within each group is wide, which is why the chart below plots every individual year instead of hiding the spread behind an average. One interpretation is that elevated issuance levels often occur during periods of strong investor sentiment. Issuance tends to peak when risk appetite peaks, and those moments have historically left investors a thinner margin of safety.
The Volume Could Flip Fast
This is where the present gets interesting, and where the case for vigilance rather than alarm can potentially come into focus. For all the noise around the reopening, 2025 issuance still ranked in the lower third of the historical range once adjusted for inflation, roughly a quarter of the 2021 peak. By the volume measure that has mattered most, in other words, the market is not yet in the zone that has preceded thinner returns. What makes 2026 unusual is how quickly that could change. SpaceX is targeting a raise of as much as $75 billion at a valuation reported near $1.75 trillion, which would rank as the largest IPO on record. A single deal of that size would raise nearly twice what the entire class of 2025 raised, and would by itself approach a record issuance year. Behind it sits Anthropic, which last raised private capital at a valuation of about $965 billion, and OpenAI, both pointing toward potential debuts later this year. The exact valuation and final raise on these deals remain moving targets, and that uncertainty is part of the point, since the market is once again being asked to absorb very large and very ambitious growth stories.
The IPO market is only part of the equity-supply story. On June 1, Alphabet announced equity offerings totaling about $80 billion to help fund its AI infrastructure buildout, anchored by a $10 billion private placement to Berkshire Hathaway, with $30 billion in underwritten public offerings and a $40 billion at-the-market program to follow. A secondary of that scale shares its driver with the marquee IPO pipeline, the capital appetite of the AI buildout, and it widens the lens on supply. New-listing volume has not yet reached the danger zone, but the broader supply of fresh equity is climbing faster than the IPO data alone suggests, one more reason to watch this signal closely.
What This Means for Positioning
The reopening of the IPO market is not a sell signal, and we would caution against reading it as one. It is a sentiment indicator, and at the moment it is sending a split message. The temperature appears to be rising, visible in first-day gains that are the warmest in five years, yet the volume of supply remains short of the levels that have historically marked excess. That combination, hot pricing on still-modest volume, is more often how a cycle matures than how it ends. For advisors, the practical takeaway is to treat the pipeline as a thermometer to watch rather than a clock to set, and the variable worth watching is volume rather than headlines. If the megadeals price and a broader flood of issuers follows, pushing total proceeds toward or past the 2021 record, the historical record argues for tempering expectations on forward returns and revisiting how much risk a portfolio is being paid to hold. If issuance stalls once the marquee names clear, the reopening may look more like normalization than euphoria.
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