IPO Window Stays Wide Open: $120B+ in H1 2026 Issuance, Four New Listings This Week

The H1 2026 issuance scorecard

U.S. equity issuance topped $120 billion year-to-date through June — the strongest first-half pace since 2021 — as AI-infrastructure IPOs, sponsor-driven follow-ons, and a record run of convertibles redefined the capital markets landscape.{{cite:callc69ddffb}} UBS estimates IPO issuance alone could reach $200–350 billion for the full year, with the bank arguing that “record equity issuance shouldn’t be a headwind for equity markets” given the depth of current demand.{{cite:callc69ddffb}} Morgan Stanley echoed the constructive tone, noting that “larger and later-stage companies are coming to market across sectors” in 2026.{{cite:callc69ddffb}}

The quarter closes with four sizable IPOs pricing in the final week before the July 4 holiday — a window that issuers and their bankers are using to full effect.

IPOs pricing this week

Bending Spoons — the Milan-based technology company behind Vimeo, AOL, and other acquired software brands — launched its U.S. IPO on June 23 with 57.97 million ordinary shares at $26–$28, targeting up to $1.62 billion in gross proceeds at an approximate $19 billion valuation.{{cite:call338a8ab2}} The deal is backed by a syndicate of eleven underwriters including Goldman Sachs, J.P. Morgan, Allen & Company, and BofA Securities.{{cite:calle26fe4ab}} Reports indicated the offering priced above its initial range, with a Nasdaq debut targeted for July 1.{{cite:call338a8ab2}}

CopperTech Metals — a Vedanta Resources copper mining spin-off with operations in India, Zambia, and Australia — set terms on June 23 for 23.53 million shares at $16–$18, seeking roughly $400 million at a target valuation of up to $3.57 billion.{{cite:call4e7c1247}} The listing lands on the NYSE and taps into investor appetite for copper exposure amid elevated prices (copper trading near $5.64/lb at the time of pricing).{{cite:call4e7c1247}}

Renaissance Capital’s forward calendar shows no additional confirmed IPOs beyond this week, suggesting a brief summer pause before the next wave.{{cite:calle26fe4ab}}

The secondary offering pipeline

While IPOs grab headlines, follow-on issuance is running at a torrid clip. Several notable secondaries priced or closed in the final week of June:

Vishay Intertechnology (NYSE: VSH) priced 15 million shares at $50 each for approximately $750 million in gross proceeds, with underwriters granted an option for an additional 2.25 million shares.{{cite:call21c170aa}} The offering — managed by JPMorgan, Needham, Oppenheimer, Raymond James, TD Cowen, and Truist — is earmarked to fund growth initiatives and reduce borrowings.{{cite:call21c170aa}} VSH shares fell roughly 6% in pre-market trading following the announcement, with some outlets reporting the decline extending to 12.4% by the session close — a reminder that dilutive offerings can weigh on share prices even when proceeds are directed toward growth.{{cite:call21c170aa}}

Definium Therapeutics (Nasdaq: DFTX) closed an upsized $805 million public offering with full exercise of the underwriters’ overallotment option, underscoring strong institutional demand for biotech paper.{{cite:call8f40ae48}}

Buybacks running in parallel

The issuance wave is being partially offset by aggressive buyback activity, creating a two-way flow in share supply:

• Accenture (ACN) increased its fiscal year 2026 share repurchase program by $2 billion, bringing the total planned buyback to $7.5 billion — a 62% increase year-over-year.{{cite:callde0ba223}}
• Visteon (VC) authorized an $800 million share repurchase program expiring December 31, 2026.{{cite:callde0ba223}}
• Nvidia (NVDA) announced an $80 billion buyback alongside a 25x dividend hike.{{cite:callde0ba223}}
• Intesa Sanpaolo launched a €2.3 billion buyback authorized by the ECB.{{cite:callde0ba223}}
• Ericsson continued ongoing share repurchases throughout the week of June 22–26.{{cite:callde0ba223}}

The net effect: record issuance is adding supply, but record buybacks are absorbing a meaningful portion of it. UBS’s thesis that issuance shouldn’t be a market headwind rests partly on this offsetting dynamic.{{cite:callc69ddffb}}

Lockup expirations: the next supply overhang

For recently listed companies, lockup expirations represent a second wave of potential share supply. The most closely watched:

• SpaceX (SPCX): The 180-day lockup expires December 8, 2026, but the first selling window for employees opens after Q2 2026 earnings, expected in late July or August.{{cite:call2e36b7b2}} Elon Musk’s 6.4 billion shares remain locked until June 12, 2027.{{cite:call2e36b7b2}} The SpaceX IPO was completed at a reported $1.8 trillion valuation, making any unlock a potentially significant supply event.{{cite:callc69ddffb}}
• MiniMax (0100.HK): First share unlock on July 9, 2026. Strategic investors Alibaba and miHoYo have publicly pledged long-term support, potentially mitigating selling pressure.{{cite:call2e36b7b2}}
• Bleichroeder Acquisition Corp. II (BBCQ): Lock-up period ends July 7.{{cite:call2e36b7b2}}
• Hong Kong listings: A wave of record share lockup expirations hits in July, with market participants bracing for potential sell-off pressure.{{cite:call2e36b7b2}}

SEC market-structure moves

The SEC is simultaneously advancing two significant market-structure rule changes that could reshape trading liquidity for the very names being issued:

1. Tick-size and access fee relief: On June 11, 2026, the SEC granted temporary exemptive relief from compliance with certain Regulation NMS tick-size and access-fee rules (Release No. 34-105656), responding to industry requests — including from SIFMA — for additional time to implement the 2024 amendments.{{cite:call53c516a6}} The relief delays the narrower tick sizes that would reduce spreads on higher-priced stocks.

2. Trade-through rule proposal: The SEC proposed amendments to Rule 611 of Regulation NMS — the trade-through prohibition and locked/crossed markets provisions (File No. S7-2026-20) — in what could represent the most significant structural change to order protection rules in years.{{cite:call53c516a6}}

Both moves matter for newly public companies: tick-size changes affect spread liquidity for newly listed names, while trade-through rule amendments could alter how orders interact across venues during the critical early trading period when price discovery is still forming.

The AI mega-IPO question

A June 30 article in Portfolio Adviser flagged a broader concern: “2026 AI mega-IPOs: A warning sign for equity markets?”{{cite:callc69ddffb}} With SpaceX having completed its blockbuster IPO at a reported $1.8 trillion valuation, and Anthropic and OpenAI reportedly preparing for listings in 2026 and 2027 at valuations measured in trillions, some strategists warn that the concentration of AI-driven supply could test market depth.{{cite:callc69ddffb}} Forge Global’s pipeline watch also includes Lambda, an AI infrastructure company reportedly planning an H2 2026 IPO.{{cite:calle26fe4ab}}

The counterargument, articulated by UBS and J.P. Morgan, is that today’s market capitalization and liquidity levels are sufficient to absorb the supply — unlike the 2000 dot-com cycle, where issuance volumes overwhelmed a much smaller market.{{cite:callc69ddffb}} J.P. Morgan’s note was titled pointedly: “The IPO Wave Is Historic. So Is Today’s Market.”{{cite:callc69ddffb}}

What to watch next

1. Bending Spoons (BSP) first-day performance — The July 1 Nasdaq debut will be a sentiment test for large cross-border tech IPOs. Pricing above range signals strong demand; the reception in the first week sets the tone for the summer pipeline.

2. CopperTech Metals (CUX) listing — A barometer for whether the metals/mining IPO window remains open. Copper prices near multi-year highs provide a favorable backdrop, but mining IPOs carry commodity-risk overhangs.

3. SpaceX employee selling window (late July/August) — The first opportunity for SpaceX employees to sell unlocked shares. Volumes and price impact will be closely watched as a proxy for how future mega-IPO lockup expirations might unfold.

4. SEC Reg NMS timeline — Watch for further SIFMA extensions or compliance-date clarifications on tick-size rules, which directly affect spread liquidity for new listings.

5. H2 IPO pipeline — With the forward calendar currently thin after this week, watch for new S-1 filings in July. The Anthropic and OpenAI listings remain the biggest potential supply events, but timing is uncertain. Lambda’s reported H2 2026 plans could fill the gap.

6. Vishay (VSH) post-offering stabilization — How quickly the stock recovers from the 6–12% offering-day decline will signal whether the market is absorbing dilutive secondaries gracefully or pushing back on supply.

FN2 Research provides financial research and education, not personalized investment advice. All figures are sourced from public filings, press releases, and market data cited inline.