---
title: "Quantum Computing Shares Sink Ahead Of Blockbuster Quantinuum IPO"
type: "News"
locale: "en"
url: "https://longbridge.com/en/news/288723093.md"
description: "Quantinuum's upcoming Nasdaq IPO, valued at up to $14.3 billion with a $53-$55 share price, triggered a broad sell-off in quantum computing stocks. Competitors like Infleqtion, Arqit Quantum, and Rigetti Computing saw declines of 9%, 8%, and 7% respectively. The sector faces scrutiny as investors assess demand sustainability following recent gains."
datetime: "2026-06-04T12:39:14.000Z"
locales:
  - [zh-CN](https://longbridge.com/zh-CN/news/288723093.md)
  - [en](https://longbridge.com/en/news/288723093.md)
  - [zh-HK](https://longbridge.com/zh-HK/news/288723093.md)
---

# Quantum Computing Shares Sink Ahead Of Blockbuster Quantinuum IPO

Quantinuum (QNT) pulled quantum shares lower on Wednesday as the Honeywell (HON)-backed company moved closer to its Nasdaq debut, with pricing set for June 3 and first trading expected on June 4.

Quantinuum plans to sell 26.5 million shares at $53 to $55 each and raise about $1.46 billion. The offering could value Quantinuum at as much as $14.3 billion and was reportedly more than 20 times oversubscribed.

The slide was broad across the group. Arqit Quantum fell about 8%, Infleqtion (INFQ) lost about 9% and Rigetti Computing dropped nearly 7%. D-Wave Quantum and Quantum Computing each eased about 6%, while SEALSQ (LAES) slipped about 5% and IonQ (IONQ) declined around 3%.

The Defiance Quantum ETF (QTUM) was little changed, dipping about 0.2%, suggesting the pressure was concentrated in higher-beta names. Quantinuum's listing comes as investors continue to test how much demand the sector can support after a fast run-up in recent months.

### Related Stocks

- [RGTI.US](https://longbridge.com/en/quote/RGTI.US.md)
- [ARQQ.US](https://longbridge.com/en/quote/ARQQ.US.md)
- [INFQ.US](https://longbridge.com/en/quote/INFQ.US.md)
- [ARQQW.US](https://longbridge.com/en/quote/ARQQW.US.md)
- [RGTX.US](https://longbridge.com/en/quote/RGTX.US.md)
- [RGTU.US](https://longbridge.com/en/quote/RGTU.US.md)
- [RGTZ.US](https://longbridge.com/en/quote/RGTZ.US.md)
- [HON.US](https://longbridge.com/en/quote/HON.US.md)
- [QBTS.US](https://longbridge.com/en/quote/QBTS.US.md)
- [QUBT.US](https://longbridge.com/en/quote/QUBT.US.md)
- [LAES.US](https://longbridge.com/en/quote/LAES.US.md)
- [IONQ.US](https://longbridge.com/en/quote/IONQ.US.md)
- [QTUM.US](https://longbridge.com/en/quote/QTUM.US.md)
- [HONIV.US](https://longbridge.com/en/quote/HONIV.US.md)
- [INFQ+.US](https://longbridge.com/en/quote/INFQ+.US.md)
- [RGTIW.US](https://longbridge.com/en/quote/RGTIW.US.md)
- [QBTS+.US](https://longbridge.com/en/quote/QBTS+.US.md)
- [IONQ+.US](https://longbridge.com/en/quote/IONQ+.US.md)

## Related News & Research

- [Wall Street Is Wrong About This Quantum Computing Stock for 2026 -- Here's the Proof](https://longbridge.com/en/news/288773394.md)
- ['Run for the Hills,' Says Top Investor as IonQ and Rigetti Shares Face Trouble](https://longbridge.com/en/news/288969277.md)
- [Quantinuum stock opens at $68 in blockbuster quantum IPO debut](https://longbridge.com/en/news/288757320.md)
- [Quantum-computing capital still flowing after Quantinuum’s choppy debut](https://longbridge.com/en/news/289207612.md)
- [Quantinuum prices IPO at $60 a share. It’s slated to go public Thursday.](https://longbridge.com/en/news/288646509.md)