IonQ (IONQ) vs Quantum (QMCO)
Head-to-head comparison of performance, valuation, growth, profitability and dividends. Prices delayed 15 minutes; data as of Oct 10, 2026.
Summary
Quantum (QMCO) has outperformed IonQ (IONQ) over the past year, gaining 142.6% versus a loss of 48.5%. Over five years, IONQ leads with a +296.9% price change compared with -72.9% for QMCO. IonQ is the larger company by market cap ($16.16 billion vs $1.20 billion), about 13.5 times the size.
Summary generated from market data by MetaCap's automated system. Methodology
Relative performance
Percent change in share price from the first common trading day shown; excludes dividends.
Head-to-head
| Metric | IONQ | QMCO |
|---|---|---|
| Share price | $39.89 | $30.43 |
| Market cap | $16.16B | $1.20B |
| 1-day change | +1.12% | +4.27% |
| YTD return | -11.10% | +371.71% |
| 1-year return | -48.53% | +142.62% |
| 5-year return | +296.92% | -72.88% |
| Forward P/E | — | 36.22 |
| EPS (TTM) | $-3.47 | $-12.97 |
| Dividend yield | 0.00% | 0.00% |
| Annual dividend | $0.00 | $0.00 |
| Revenue (latest FY) | $130.02M | — |
| Revenue growth (YoY) | +201.85% | — |
| Net income (latest FY) | $-510.38M | — |
| Gross margin | 40.40% | — |
| Operating margin | -487.41% | — |
| Net margin | -392.55% | — |
| 52-week high | $84.64 | $35.65 |
| 52-week low | $25.89 | $4.19 |
| Distance from 52-week high | -52.87% | -14.66% |
| Analyst consensus | strong_buy | none |
| Avg. price target upside | +67.03% | -12.90% |
| Average volume | 21.26M | 1.72M |
| Shares outstanding | 405.14M | 39.41M |
| Employees | 1,132 | 490 |
| Sector | Technology | Technology |
| Industry | EDP Services | Electronic Components |
Highlighted cells mark the higher value for growth, returns, margins and yield, and the lower value for P/E ratios. Highlighting is a mechanical comparison, not a recommendation.
Key differences
- IonQ is about 13.5 times larger than Quantum by market value ($16.16B vs $1.20B).
- QMCO has outperformed IONQ by 191.2 percentage points over the past year.
About IonQ
IONQ stock →IonQ, Inc. develops quantum computing systems in the United States, Switzerland, and Internationally.
Technology · EDP Services · 1,132 employees
About Quantum
QMCO stock →Quantum Corporation provides data management solutions for unstructured data in the Americas, Europe, the Middle East, Africa, and the Asia Pacific. The company offers primary storage software and systems, including StorNext Hybrid Flash/Disk File Storage Software for video editing, post-production, and streaming applications, as well as large digital file archives; and Unified Surveillance Platform Software, a unified compute and storage software for video surveillance recording, storage, and analytics.
Technology · Electronic Components · 490 employees
IONQ vs QMCO FAQ
Which is bigger, IonQ or Quantum?
IonQ (IONQ) is larger, with a market capitalization of $16.16B compared with $1.20B for Quantum (QMCO).
Which stock has performed better over the past year, IONQ or QMCO?
QMCO returned +142.62% over the past 12 months, compared with -48.53% for IONQ (price return, excluding dividends). Past performance does not predict future results.
Are IonQ and Quantum in the same industry?
Both are in the Technology sector, but in different industries: EDP Services for IonQ and Electronic Components for Quantum.