---
title: "US IPO Weekly Recap: Data center developer Nscale files, while Holtec Nuclear postpones IPO"
type: "News"
locale: "en"
url: "https://longbridge.com/en/news/299495108.md"
description: "This week's US IPO recap highlights significant market activity. Holtec Nuclear postponed its $825 million IPO, while Nscale filed for a potential multibillion-dollar offering. Electra Therapeutics priced an upsized IPO at $350 million but saw shares drop 11.7%. Orion180 Insurance raised $240 million below range, finishing down 2.8%, whereas American Savings Bank raised $129 million and gained 9.8%. Additionally, two SPACs, Haymaker Acquisition V and Leader’s Advantage Acquisition, priced offerings raising $250 million and $150 million respectively."
datetime: "2026-09-18T23:30:04.000Z"
locales:
  - [zh-CN](https://longbridge.com/zh-CN/news/299495108.md)
  - [en](https://longbridge.com/en/news/299495108.md)
  - [zh-HK](https://longbridge.com/zh-HK/news/299495108.md)
generator: "portal-rs"
---

# US IPO Weekly Recap: Data center developer Nscale files, while Holtec Nuclear postpones IPO

Three IPOs and two SPACs priced this week, while five IPOs and three SPACs submitted filings. Those filings included a potential multibillion dollar offering from neocloud **Nscale** (NSCL). But perhaps the week’s biggest headline was that **Holtec Nuclear** (HNUC) postponed its proposed $825 million IPO ahead of a planned Friday listing.

Antibody biotech **Electra Therapeutics** (ETRA) priced its upsized IPO at the midpoint to raise $350 million at a $1.0 billion market cap. Electra Therapeutics is developing a class of precision medicines directed at signal regulatory proteins (SIRP) expressed on specific immune cell populations. Lead candidate ipsoprubart is a pan-SIRP monoclonal antibody designed to selectively deplete pathological myeloid cells and T cells. Electra Therapeutics finished the week down 11.7%, a rare disappointment for a biotech IPO.

Catastrophe-focused E&S home insurer **Orion180 Insurance Group** (OIG) priced below the range to raise $240 million at a $1.2 billion market cap. Orion180 Insurance Group states it is the second largest excess and surplus lines homeowners’ insurance provider in the United States by direct written premiums with a presence in 14 states, approximately $601 million in managed premiums written for the last twelve months ended June 30, 2026, and over 670,000 policies sold since inception. It finished the week down 2.8%.

Hawaii community bank **American Savings Bank** (ASBH) priced its upsized IPO at the midpoint to raise $129 million at a $1.0 billion market cap. American Savings Bank provides a full suite of financial products and services, including deposits, loans, insurance, cash management, merchant services, and investment services to personal, small business, and commercial customers across Hawaii. The bank operates a statewide network of 35 branches and over 120 ATMs, complemented by a digital banking platform. The bank finished the week up 9.8%.

Two SPACs priced this week. **Haymaker Acquisition V** (HYACU) raised $250 million to target industrial and consumer products and services. Leader’s Advantage Acquisition (LEDRU) raised $150 million to target the chemical and healthcare sectors.

### Related Stocks

- [ETRA.US](https://longbridge.com/en/quote/ETRA.US.md)
- [LEDRU.US](https://longbridge.com/en/quote/LEDRU.US.md)
- [OIG.US](https://longbridge.com/en/quote/OIG.US.md)
- [ASBH.US](https://longbridge.com/en/quote/ASBH.US.md)

## Related News & Research

- [OrbiMed Advisors Discloses Investment at Electra Therapeutics with 11.0% Stake](https://longbridge.com/en/news/300167793.md)
- [OrbiMed Advisors acquires 1,333,333 Electra Therapeutics shares for USD 20 million](https://longbridge.com/en/news/299946121.md)
- [Electra Therapeutics adopts amended, restated bylaws effective at IPO close](https://longbridge.com/en/news/299678681.md)
- [Electra Therapeutics files Form 3 as Westlake BioPartners Fund I reports beneficial ownership](https://longbridge.com/en/news/299696744.md)
- [HBM Healthcare Investments says Electra Therapeutics IPO raises USD 350 million](https://longbridge.com/en/news/299591426.md)

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