Publicly Traded Quantum — 2026-06-30
Published:
Generated: 2026-06-30 UTC. Prices are last available daily close from Yahoo Finance and are informational only — not investment advice.
Companies
Quantum-primary publicly traded companies (quantum hardware, software, or quantum-enabled products as the core business). Diversified mega-caps with quantum divisions (Google, IBM, Microsoft, Amazon, etc.) are intentionally excluded.
| Ticker | Company | HQ | Focus | Last close | Δ vs prev close | 30d |
|---|---|---|---|---|---|---|
| IONQ | IonQ | College Park, MD, USA | Trapped-ion quantum computers | $53.26 | -1.15% | |
| RGTI | Rigetti Computing | Berkeley, CA, USA | Superconducting quantum hardware | $19.32 | -0.62% | |
| QBTS | D-Wave Quantum | Burnaby, BC, Canada | Quantum annealing | $23.99 | +0.67% | |
| QUBT | Quantum Computing Inc. (QCI) | Hoboken, NJ, USA | Photonic / entropy quantum systems | $9.70 | -2.22% | |
| ARQQ | Arqit Quantum | London, UK | Symmetric quantum-safe encryption | $29.72 | +8.82% | |
| QSI | Quantum-Si | Branford, CT, USA | Quantum-enabled protein sequencing | $0.88 | -0.45% | |
| LAES | SEALSQ | Geneva, Switzerland | Post-quantum secure semiconductors | $3.15 | -1.87% |
ETFs
Broad-basket exchange-traded funds that track quantum-computing and adjacent quantum-tech holdings.
| Ticker | Fund | Listing | Focus | Last close | Δ vs prev close | 30d |
|---|---|---|---|---|---|---|
| QTUM | Defiance Quantum ETF | USA | Broad quantum-computing ETF | $165.38 | +2.84% |
Leaderboard (1-day move)
**Top gainers**
- Arqit Quantum (ARQQ) — +8.82%
- Defiance Quantum ETF (QTUM) — +2.84%
- D-Wave Quantum (QBTS) — +0.67%
- Quantum-Si (QSI) — -0.45%
- Rigetti Computing (RGTI) — -0.62%
- Quantum Computing Inc. (QCI) (QUBT) — -2.22%
- SEALSQ (LAES) — -1.87%
- IonQ (IONQ) — -1.15%
- Rigetti Computing (RGTI) — -0.62%
- Quantum-Si (QSI) — -0.45%