---
title: "Quantum Computing Stocks Show Minor Fluctuations in Post-Market, IONQ Up 0.71%, QBTS Up 0.06%, RGTI Up 0.20%, QUBT Down 0.40%"
type: "News"
locale: "en"
url: "https://longbridge.com/en/news/298080223.md"
description: "During post-market trading on September 4, the quantum computing sector showed minor fluctuations. IONQ, QBTS, and RGTI closed slightly higher while QUBT retreated modestly, with trading activity declining compared to regular session."
datetime: "2026-09-04T22:46:06.000Z"
locales:
  - [zh-CN](https://longbridge.com/zh-CN/news/298080223.md)
  - [en](https://longbridge.com/en/news/298080223.md)
  - [zh-HK](https://longbridge.com/zh-HK/news/298080223.md)
generator: "portal-rs"
---

# Quantum Computing Stocks Show Minor Fluctuations in Post-Market, IONQ Up 0.71%, QBTS Up 0.06%, RGTI Up 0.20%, QUBT Down 0.40%

During post-market trading on September 4, the quantum computing sector exhibited minor fluctuations. As of press time, the four mainstream stocks in the sector showed mixed performance, with **IONQ up 0.71% at $39.80**, **QBTS up 0.06% at $16.59**, **RGTI up 0.20% at $15.23**, and **QUBT down 0.40% at $7.98**.

In terms of trading volume, post-market activity declined noticeably compared to the regular session. IONQ's post-market volume reached 440,500 shares with turnover of approximately $17.43 million; QBTS traded 140,300 shares with turnover of about $2.33 million; RGTI saw 333,200 shares traded with turnover of roughly $5.07 million; QUBT's post-market volume was 24,400 shares with turnover of approximately $200,000.

Overall, the quantum computing sector showed no significant movement during post-market hours, with all stocks moving less than 1%, indicating investors adopted a wait-and-see approach after the regular session. The sector's intraday trend will require further observation during the next pre-market and regular trading sessions.

### Related Stocks

- [RGTI.US](https://longbridge.com/en/quote/RGTI.US.md)
- [IONQ.US](https://longbridge.com/en/quote/IONQ.US.md)
- [QBTS.US](https://longbridge.com/en/quote/QBTS.US.md)
- [QUBT.US](https://longbridge.com/en/quote/QUBT.US.md)
- [QBTX.US](https://longbridge.com/en/quote/QBTX.US.md)
- [IONL.US](https://longbridge.com/en/quote/IONL.US.md)
- [QBTZ.US](https://longbridge.com/en/quote/QBTZ.US.md)
- [RGTU.US](https://longbridge.com/en/quote/RGTU.US.md)
- [QUBX.US](https://longbridge.com/en/quote/QUBX.US.md)
- [IONX.US](https://longbridge.com/en/quote/IONX.US.md)
- [IONZ.US](https://longbridge.com/en/quote/IONZ.US.md)
- [RGTX.US](https://longbridge.com/en/quote/RGTX.US.md)
- [RGTZ.US](https://longbridge.com/en/quote/RGTZ.US.md)
- [IOYY.US](https://longbridge.com/en/quote/IOYY.US.md)
- [IONQ+.US](https://longbridge.com/en/quote/IONQ+.US.md)
- [QBTS+.US](https://longbridge.com/en/quote/QBTS+.US.md)
- [RGTIW.US](https://longbridge.com/en/quote/RGTIW.US.md)

## Related News & Research

- [D-Wave Quantum Adds Veteran Tech Leader to Board](https://longbridge.com/en/news/299637348.md)
- [Breaking Down the Impact of the CHIPS Funding Deal for Quantum Firms](https://longbridge.com/en/news/299072960.md)
- [D-Wave (QBTS) to Showcase Dual Quantum Strategy as Wall Street Sees 116% Upside](https://longbridge.com/en/news/299182391.md)
- [D-Wave to Showcase Dual-Platform Quantum Strategy at Quantum World Congress 2026](https://longbridge.com/en/news/299040118.md)
- [Quantum Computing Inc signs three-year quantum collaboration deal with Qatar’s HBKU](https://longbridge.com/en/news/298918918.md)

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