The Equity Supply Debate: Record Issuance, Record Buybacks, and the 2027 Lockup Cliff

US companies raised more than a quarter-trillion dollars in equity in a single quarter this spring. By mid-year, Goldman Sachs put total 2026 equity issuance — IPOs, follow-ons, converts, and SPACs combined — at approximately $700 billion, a record.^[1] Corporate buyback announcements, meanwhile, reached $960 billion year-to-date, with Goldman projecting $1.3 trillion for the full year.^[1]

The headline numbers sound alarming. A deeper look at the ratios, the composition, and the historical base rates tells a more nuanced story — for 2026. The real test arrives in 2027, when lockup periods on this year’s IPOs begin to expire and previously restricted shares enter the float.

The $700 Billion in Context

Goldman Sachs chief US equity strategist Ben Snider noted that 2026’s record issuance “represents only about 1% of Russell 3000 market capitalization” — roughly in line with the 2015–2019 average and well below the approximately 1.5% reached in 2021 or the 2% peak of the dot-com era.^[1]

The Q2 figure alone was $252 billion, easily beating the previous record set in early 2021.^[2] But follow-on equity — the component most often cited as a supply threat — accounted for $70 billion of that, bringing the year-to-date follow-on total to $105 billion. Snider described this as “a return to normal rather than a boom,” concentrated in a few large deals, with Alphabet’s massive offering the most obvious example.^[2]

On the number of deals, the market is not euphoric by historical standards. Roughly 50 US IPOs priced through mid-year, about double the same point in 2025 and the most since 2021.^[3] But the 25-year average is about 100 deals per year; 2021 saw over 250, and 1999 nearly 400.^[3] Dollar volume is elevated because deal sizes are large, not because the pipeline is frothy in count.

Goldman’s IPO Barometer — a macro gauge combining rates, CEO confidence, and valuations — sits at 140, above the long-term average of 100 but below 2021’s peak.^[3]

Buybacks: The Demand Side Investors Overlook

The fear most commonly expressed to Goldman’s strategists is that supply will overwhelm the market. Snider’s response: corporate demand alone should exceed corporate supply this year. Buybacks are projected to exceed $1 trillion, with gross repurchases across the US public market reaching an estimated $1.4 trillion.^[2] That figure “should outweigh both direct corporate equity issuance and the large potential additional supply from expiring post-IPO lockups, even assuming unrealistically that all unlocked shares are immediately sold.”^[2]

Buyback authorizations were up 11% in Q2 year-over-year, and year-to-date authorizations of nearly $1 trillion set a record pace.^[2] NVIDIA alone added $80 billion to its repurchase authorization.^[1]

University of Florida professor emeritus Jay Ritter put it in aggregate terms: US-listed companies pay about $600 billion in annual dividends and about $1 trillion in buybacks, meaning roughly $1.6 trillion in cash needs reinvestment annually. Against that, the IPO market is absorbing only a portion of available capital.^[1]

The 2027 Lockup Cliff

The argument that “this is fine” has an expiration date. Most IPOs come public with small floats — a fraction of total shares — with the remainder locked up for roughly six months. When those lockups lift, the tradable supply can increase sharply.

SpaceX’s record-breaking $86.2 billion IPO in June 2026 illustrated the mechanism in real time. By late July, the stock was almost 15% below its IPO price and more than 40% below its post-listing high of $201.8 per share.^[4] On August 6, roughly 20% of the company held by insiders became unlocked for trading — an overhang well in excess of the IPO’s initial float.^[4] Many of those long-term investors remain in profit even at the depressed price, given that SpaceX is still valued above $1.5 trillion, more than at any point in its private lifecycle.^[4]

Goldman’s Snider was candid: “the math becomes more difficult in 2027 when lockups for stocks listed in 2026 expire,” and “the supply-demand balance is clearly moving in a negative direction.”^[1] He added that “some investors appear reluctant to buy before the final supply impact becomes clear,” and that poor aftermarket performance in newly listed stocks is itself a signal the market is struggling to digest supply.^[1]

The Anthropic Pipeline Test

The SpaceX stumble has implications for the next mega-IPO in the queue. Anthropic, the frontier AI model developer, confidentially filed with the SEC on June 1 and is holding investor meetings targeting an October listing window.^[4] OpenAI is not expected to attempt an IPO until 2027.^[4]

The backdrop for Anthropic’s deal has shifted since its filing. Concerns about AI valuation levels, the capital intensity of data-center buildouts, and competition from cheaper open-source models out of China have all weighed on sentiment.^[4] One investor who participated in the SpaceX IPO told ECM Pulse that “the backdrop is not great” for Anthropic, citing lack of performance in that deal and other large global IPOs.^[4]

Not all pipeline activity is AI-concentrated. Blackstone-owned Jersey Mike’s is on the road with an IPO that could value the sandwich chain at up to $8 billion, with a $1 billion-plus raise — one of the largest food-industry listings in years.^[4] European listings including Danish pharmaceutical company Leo Pharma and Blackstone-owned Hotel Investment Partners offer exposure to “real-world” businesses with tangible return profiles.^[4]

The Reg NMS Rescission: A Structural Shift in Parallel

While the supply-demand debate focuses on quantities of shares, the SEC is proposing to change the plumbing through which those shares trade. On June 11, 2026, the Commission proposed rescinding Rules 611 and 610(e) of Regulation NMS — the trade-through prohibition and the restrictions on locked and crossed quotations that have governed US equity market structure for two decades.^[5]

Chairman Paul Atkins framed the proposal as simplification: “After two decades of Rule 611, it is high time that the Commission review its unintended consequences that have hindered — rather than enhanced — the long-term growth of our markets.”^[5] The public comment period runs for 60 days after Federal Register publication.^[5]

Commissioner Mark Uyeda called the proposal “an important beginning in the broader, more complex journey of reforming the Commission’s equity market-structure rules.”^[6] If adopted, the rescission would remove the obligation for trading centers to prevent trade-throughs — transactions executed at prices worse than the best available bid or offer across venues — and would allow quotations to lock or cross across markets. The practical consequences for order routing, internalization, and exchange competition could be significant, though the comment period and eventual adoption timeline remain open.

What Would Have to Be True

Two interpretations of the supply picture are currently competing:

The “oversupply” reading: Record dollar issuance, even if normal as a share of market cap, arrives alongside a narrowing of what Snider called the “float shrink” tailwind that has buoyed equities for most of the post-GFC period. If buyback growth slows — earnings pressure, AI capex crowding out capital returns, or a shift in corporate cash priorities — the demand side weakens precisely as 2027 lockup supply arrives. The SpaceX aftermarket is a preview.

The “return to normal” reading: Issuance at 1% of market cap is not anomalous. Buybacks at $1.3–1.4 trillion comfortably exceed corporate supply even under aggressive lockup-sale assumptions. The deal count is near the 25-year average, not euphoric. The market self-corrects: if supply pressures prices, future issuance slows. Ritter’s point about $1.6 trillion in annual cash reinvestment needs places the IPO market in a larger demand context.^[1]

What would have to be true for the bearish case to win out? Buybacks would need to decelerate meaningfully — earnings growth would have to slow, or capex would have to crowd out repurchases at a scale that closes the gap with lockup supply. What would have to be true for the optimistic case? Earnings growth continues to power the market — Goldman notes the S&P 500 is up roughly 10% year-to-date while forward earnings are up 17%, meaning multiples have actually compressed.^[3]

What to Watch Next

The honest answer is that both sides have a case. The 2026 math works because buybacks are large and issuance, despite the record headline, is a normal share of a market that has grown enormously. The 2027 math is where the margin of safety narrows. The SpaceX post-IPO performance and the Anthropic pipeline will provide the first real read on whether the market can absorb what comes next — or whether the “oversupply” label earns its keep.

FN2 Research provides financial research and education, not personalized investment advice. Nothing in this article constitutes a recommendation to buy, sell, or hold any security.