---
title: "Quantum Computing Sector Plunges Intraday, IONQ Down Over 9%, QBTS Near 10%"
type: "News"
locale: "en"
url: "https://longbridge.com/en/news/294076671.md"
description: "During Tuesday (July 28) trading hours, the quantum computing sector retreated broadly. IONQ fell over 9% to $32.68, QBTS dropped nearly 10% to $17.53, while RGTI and QUBT both declined more than 8%, signaling a significant shift in sector sentiment."
datetime: "2026-07-28T13:46:19.000Z"
locales:
  - [zh-CN](https://longbridge.com/zh-CN/news/294076671.md)
  - [en](https://longbridge.com/en/news/294076671.md)
  - [zh-HK](https://longbridge.com/zh-HK/news/294076671.md)
generator: "portal-rs"
---

# Quantum Computing Sector Plunges Intraday, IONQ Down Over 9%, QBTS Near 10%

During intraday trading on Tuesday (July 28), the US quantum computing sector faced significant selling pressure, with major stocks retreating broadly. As of 1:45 PM ET, all four primary components of the sector were in negative territory, indicating a marked weakening in market sentiment.

**IonQ (IONQ.US)** led the decline, trading at **$32.68**, down **9.02%** from the previous close. The stock dipped to a low of $32.66 during the session, with volume reaching 3.35 million shares and turnover exceeding $113 million, reflecting strong capital outflow. Close behind was **D-Wave Quantum (QBTS.US)**, which fell to **$17.53**, a drop of **9.85%**. Trading was active with volume hitting 4.74 million shares.

Other components also suffered losses. **Rigetti Computing (RGTI.US)** traded at **$14.37**, down **8.12%**, while **Quantum Computing Inc (QUBT.US)** fell **7.66%** to **$7.35**. Overall, the quantum computing sector showed a broad-based decline during the session, with all four major stocks dropping more than 7%, and two nearing or exceeding a 10% loss. This suggests the high-volatility sector is facing significant profit-taking or risk-off pressure today.

### Related Stocks

- [IONQ.US](https://longbridge.com/en/quote/IONQ.US.md)
- [QBTS.US](https://longbridge.com/en/quote/QBTS.US.md)
- [RGTI.US](https://longbridge.com/en/quote/RGTI.US.md)
- [QUBT.US](https://longbridge.com/en/quote/QUBT.US.md)

## Related News & Research

- [Quantum Stocks Rally as RGTI, QBTS Secure Up to $200M in U.S. Funding](https://longbridge.com/en/news/298320736.md)
- [D-Wave amends 8-K to disclose US Commerce Dept stock issuance at USD 14.09 a share](https://longbridge.com/en/news/298444822.md)
- [D-Wave Issues 7.1M QBTS Shares to U.S. Government Under $100M CHIPS Deal](https://longbridge.com/en/news/298457928.md)
- [IonQ signs $8.18 million quantum-security deal with Congruity360](https://longbridge.com/en/news/298317740.md)
- [Rigetti CFO Jeffrey Bertelsen sells 25,000 shares for $375,010](https://longbridge.com/en/news/298071727.md)

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