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US IPO Weekly Winners & Losers

August 24, 2025

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The IPO market is taking its August break.

With a mounting number of IPOs in the backlog, we’re now waiting for a wave of deals to hit in the fall.

The mood of the IPO marketThe current mood.

More companies filed for IPOs on Monday (FIGR, BRCB), which gives us a good picture of the post-Labor Day deal calendar. New filings on Friday (NTSK, PTRN) ensure the IPO market maintains that activity throughout September.

The IPO market returned -1.1% this week, compared to the S&P 500's +0.3%. The IPO Index's top performer was solar systems developer Nextracker with a +13.5% gain, while Reddit shed -11.8%.

Explaining the pullback earlier in the week, pundits pointed to a new MIT paper that cast doubt on the immediate ROI of AI, or Sam Altman warning of a bubble, but the truth is that tech investors didn't need much of an excuse to lock in gains from the recent rally. New stocks did get a boost on Friday when the Fed signaled a September rate cut.

Two SPAC mergers actually raised meaningful capital. SPACs are at a 4-year high, but if you follow the industry, you know it's much easier for new SPACs to raise funds than the companies they merge with. The reason? Investors have been burned so often they simply choose to get their $10 back via redemptions. However, newly-listed Kyivstar and BridgeBio Oncology bucked the trend. We're seeing more PIPEs as well. The takeaway: SPACs are attracting higher-quality companies.

Take care,
Bill Smith
CEO and Founder
Renaissance Capital

Weekly IPO Winners & Losers
Biggest price changes through Aug 22nd in the Renaissance IPO Index
Top 5
Nextpower (Nextracker) NXT 13.5%
Tempus AI TEM 9.1%
Birkenstock Holding BIRK 7.2%
Amer Sports AS 7.2%
ZEEKR Intelligent Technology Holding ZK 4.8%
Bottom 5
Reddit RDDT -11.8%
Pony AI PONY -6.7%
CoreWeave CRWV -6.0%
Astera Labs ALAB -3.6%
OneStream OS -3.5%
Sectors
Health Care 9.1%
Industrials 4.2%
Consumer Discretionary 3.3%
Energy 3.0%
Consumer Staples 2.2%
Financials 0.3%
Real Estate -1.0%
Technology -2.0%
Renaissance IPO Index Performance

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

The Renaissance IPO Index returned -1.1% last week vs. 0.3% for the S&P 500.