---
title: "US IPO Weekly Winners & Losers"
type: "News"
locale: "en"
url: "https://longbridge.com/en/news/296706681.md"
description: "The US IPO market is slowing for August, with Anthropic targeting an October listing and OpenAI considering Q4. New stocks faced volatility: the Renaissance IPO Index fell 4.7%, while Klarna dropped 31.1% due to lowered guidance. Conversely, Tempus AI surged 39.5% on positive trial results, and defense contractor Lyntris priced below expectations amid sector weakness."
datetime: "2026-08-23T16:00:19.000Z"
locales:
  - [zh-CN](https://longbridge.com/zh-CN/news/296706681.md)
  - [en](https://longbridge.com/en/news/296706681.md)
  - [zh-HK](https://longbridge.com/zh-HK/news/296706681.md)
generator: "portal-rs"
---

# US IPO Weekly Winners & Losers

The IPO market has hit its annual August pause.

The next two weeks should be **light on pricings, heavy on filings**.

Anthropic continues to dominate IPO headlines. After a reported 14x increase in quarterly revenue, the AI model developer is firming up plans for a possible October listing that could raise more than SpaceX.

More IPO hopefuls joined our fall watchlist, including **General Atlantic**, **Nscale**, **Kakao Mobility**, and a few public filers. Meanwhile, **OpenAI’s** CFO played down imminent IPO plans, but didn't rule out a Q4 listing either. 

The final IPO of the summer was a dud: Defense contractor Lyntris (NYSE: LYNX) priced below the range and ended the week off -10%. The rare Evercore-led deal hit the market amid a sell-off in defense stocks, including several recent IPOs.

New stocks pulled back this week, dragged down by AI infrastructure companies amid bond-market volatility. The IPO Index retreated -4.7%, with the S&P 500 off -1.4%. Buy-now-pay-later lender **Klarna** dropped -31.1% after the company lowered guidance. AI-powered precision medicine company **Tempus AI** jumped +39.5% on positive results from partner Moderna’s cancer trial. Several digital asset plays also landed among the new stock winners. 

The Renaissance IPO Index returned -4.7% last week vs. -1.4% for the S&P 500.

### Related Stocks

- [LYNX.US](https://longbridge.com/en/quote/LYNX.US.md)
- [KLAR.US](https://longbridge.com/en/quote/KLAR.US.md)
- [TEM.US](https://longbridge.com/en/quote/TEM.US.md)
- [TEMT.US](https://longbridge.com/en/quote/TEMT.US.md)
- [IPO.US](https://longbridge.com/en/quote/IPO.US.md)
- [ANTH.NA](https://longbridge.com/en/quote/ANTH.NA.md)
- [OpenAI.NA](https://longbridge.com/en/quote/OpenAI.NA.md)
- [EVR.US](https://longbridge.com/en/quote/EVR.US.md)
- [.SPX.US](https://longbridge.com/en/quote/.SPX.US.md)
- [MRNA.US](https://longbridge.com/en/quote/MRNA.US.md)

## Related News & Research

- [Tempus AI (NASDAQ:TEM) CAO Ryan Bartolucci Sells 6,175 Shares of Stock](https://longbridge.com/en/news/296562025.md)
- [Andrew Polovin Sells 22,148 Shares of Tempus AI (NASDAQ:TEM) Stock](https://longbridge.com/en/news/296610788.md)
- [Tempus AI director Nadja West disposes of 3,000 common shares worth $161,700](https://longbridge.com/en/news/296265854.md)
- [Anthropic's Revenue Run Rate Blows Past $65 Billion, Topping OpenAI by 62%](https://longbridge.com/en/news/296198219.md)
- [Anthropic’s revenue surge puts OpenAI under pressure in enterprise AI race](https://longbridge.com/en/news/296293533.md)

---
> **Disclaimer: This article is for reference only and does not constitute any investment advice.**