Publicly Traded Quantum — 2026-05-23
Published:
Generated: 2026-05-23 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 | $63.64 | +8.07% | |
| RGTI | Rigetti Computing | Berkeley, CA, USA | Superconducting quantum hardware | $26.42 | +19.87% | |
| QBTS | D-Wave Quantum | Burnaby, BC, Canada | Quantum annealing | $29.40 | +14.22% | |
| QUBT | Quantum Computing Inc. (QCI) | Hoboken, NJ, USA | Photonic / entropy quantum systems | $12.31 | +7.89% | |
| ARQQ | Arqit Quantum | London, UK | Symmetric quantum-safe encryption | $17.49 | +6.32% | |
| QSI | Quantum-Si | Branford, CT, USA | Quantum-enabled protein sequencing | $1.06 | +7.07% | |
| LAES | SEALSQ | Geneva, Switzerland | Post-quantum secure semiconductors | $3.38 | +3.36% |
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 | $153.44 | +2.75% |
Leaderboard (1-day move)
**Top gainers**
- Rigetti Computing (RGTI) — +19.87%
- D-Wave Quantum (QBTS) — +14.22%
- IonQ (IONQ) — +8.07%
- Quantum Computing Inc. (QCI) (QUBT) — +7.89%
- Quantum-Si (QSI) — +7.07%
- Defiance Quantum ETF (QTUM) — +2.75%
- SEALSQ (LAES) — +3.36%
- Arqit Quantum (ARQQ) — +6.32%
- Quantum-Si (QSI) — +7.07%
- Quantum Computing Inc. (QCI) (QUBT) — +7.89%