Publicly Traded Quantum — 2026-05-27
Published:
Generated: 2026-05-27 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 | $65.40 | +2.80% | |
| RGTI | Rigetti Computing | Berkeley, CA, USA | Superconducting quantum hardware | $24.62 | -1.78% | |
| QBTS | D-Wave Quantum | Burnaby, BC, Canada | Quantum annealing | $27.48 | -1.22% | |
| QUBT | Quantum Computing Inc. (QCI) | Hoboken, NJ, USA | Photonic / entropy quantum systems | $11.42 | -2.23% | |
| ARQQ | Arqit Quantum | London, UK | Symmetric quantum-safe encryption | $16.10 | -2.95% | |
| QSI | Quantum-Si | Branford, CT, USA | Quantum-enabled protein sequencing | $1.13 | +4.63% | |
| LAES | SEALSQ | Geneva, Switzerland | Post-quantum secure semiconductors | $3.48 | -2.25% |
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 | $156.51 | -1.33% |
Leaderboard (1-day move)
**Top gainers**
- Quantum-Si (QSI) — +4.63%
- IonQ (IONQ) — +2.80%
- D-Wave Quantum (QBTS) — -1.22%
- Defiance Quantum ETF (QTUM) — -1.33%
- Rigetti Computing (RGTI) — -1.78%
- Arqit Quantum (ARQQ) — -2.95%
- SEALSQ (LAES) — -2.25%
- Quantum Computing Inc. (QCI) (QUBT) — -2.23%
- Rigetti Computing (RGTI) — -1.78%
- Defiance Quantum ETF (QTUM) — -1.33%