IonQ, Inc. (IONQ)
IonQ Market Cap : 19.39B for May 15, 2026
Market Cap Chart
Historical Data
Market Capitalization Definition
Market Capitalization measures the total value of a company based on their stock price multiplied by the shares outstanding. This metric is important because it gives you an idea of the size of a company, and how the size has changed over time. When studying companies from a relative basis, it would make sense to compare companies that have a similar market capitalization because factors like market share, economies of scale, and business models would also be similar.
Market Cap Range, Past 5 Years
Market Cap Benchmarks
| Quantum Computing, Inc. | 2.369B |
| Super Micro Computer, Inc. | 18.67B |
| Rigetti Computing, Inc. | 5.933B |
| Seagate Technology Holdings Plc | 178.37B |
| Western Digital Corp. | 166.14B |
Market Cap Related Metrics
| PS Ratio | 89.24 |
| Price to Book Value | 3.897 |
| Price | 51.95 |
| Earnings Yield | -0.33% |