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US IPO Weekly Winners & Losers

September 14, 2025

Winners and Losers logo

It was a record week for the IPO market, and it did not disappoint.

Seven sizable issuers went public this week, the most in nearly four years, raising a combined $4.4 billion.

Five of the seven priced above the range, and all finished in positive territory, averaging a solid +17% return. At the same time, a few muted debuts signaled that some of the summer’s “IPO FOMO” is fading into more rational appetite.

  • Fintech unicorn Klarna (NYSE: KLAR) priced above the range to raise $1.4 billion in the year’s largest VC-backed IPO to date. After a decent +15% pop, it finished the week up just +7%. That’s underwhelming compared to the likes of Circle and Figma, but it’s still early innings, and a reasonable price for investors who like the story.

  • Digital assets made their latest foray into the IPO market with crypto exchange Gemini (Nasdaq: GEMI), which returned +14% after pricing at a 56% premium to the midpoint, a six-year record. Meanwhile, blockchain-powered lender Figure (Nasdaq: FIGR) popped +24% and continued to climb from there.

  • Fast-growing coffee chain Black Rock Coffee (Nasdaq: BRCB) was the week’s winner with a +38% pop, an encouraging sign for consumer IPOs in the backlog.

  • The first sizable biotech IPO since the beginning of the year, LB Pharmaceuticals (Nasdaq: LBRX) ended with a solid +12% return. Despite pricing above the range, transit unicorn Via Transportation (NYSE: VIA) initially broke issue before finishing up +8%. LBO’d building services provider Legence (Nasdaq: LGN) rose +9% by offering a reasonable discount to public peers.

The IPO Index gained +4.3% this week, outperforming the S&P 500 (+1.6%). AI stocks dominated the winners, led by CoreWeave and Astera Labs, following Oracle’s strong earnings report and forecasts for AI-related revenue. Data management platform Rubrik landed at the bottom despite an earnings beat on concerns about forward guidance.

Take care,
Bill Smith
CEO and Founder
Renaissance Capital

Weekly IPO Winners & Losers
Biggest price changes through Sep 12th in the Renaissance IPO Index
Top 5
CoreWeave CRWV 25.7%
Astera Labs ALAB 20.0%
Pony AI PONY 9.3%
Arm Holdings ARM 9.0%
Tempus AI TEM 8.5%
Bottom 5
Rubrik RBRK -18.1%
Birkenstock Holding BIRK -7.8%
Mobileye Global MBLY -7.4%
Nextpower (Nextracker) NXT -4.9%
Kaspi.kz KSPI -4.8%
Sectors
Health Care 8.5%
Energy 5.9%
Technology 3.1%
Real Estate 3.0%
Consumer Staples 2.3%
Industrials 0.5%
Consumer Discretionary -2.4%
Financials -2.9%
Renaissance IPO Index Performance

Renaissance IPO ETF (NYSE symbol: IPO) tracks the Renaissance IPO Index

The Renaissance IPO Index returned 4.3% last week vs. 1.6% for the S&P 500.