IonQ, Inc. (IONQ) P/E Ratio History
Historical price-to-earnings valuation from 2026 to 2026
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IONQ Valuation Context
How does the current P/E compare to historical and market benchmarks?
P/E Ratio Analysis
As of May 7, 2026, IonQ, Inc. (IONQ) trades at a price-to-earnings ratio of -28.9x, with a stock price of $52.57 and trailing twelve-month earnings per share of $0.75.
Compared to the Technology sector median P/E of 27.5x, IONQ trades at a 205% discount to its sector peers. The sector includes 357 companies with P/E ratios ranging from 0.0x to 175.4x.
Relative to the broader market, IONQ trades at a notable discount to the S&P 500 median P/E of 25.2x. Investors should consider the company's growth prospects, competitive position, and earnings quality when evaluating whether the current valuation is justified.
For a comprehensive intrinsic value estimate using discounted cash flow analysis, see our IONQ DCF Valuation Calculator →
Note: P/E ratio is just one valuation metric. It does not account for balance sheet strength, cash flow quality, or growth sustainability. Always conduct comprehensive due diligence before making investment decisions.
IONQ P/E vs Peers
P/E ratio compared to closely matched public peers
| Company | Market Cap | P/E Ratio | PEG Ratio | EPS Growth (1Y) |
|---|---|---|---|---|
| $212B | 20.2Lowest | 1.63 | +74%Best | |
| $4.8T | 36.8 | 1.23 | +34% | |
| $3.1T | 30.3 | 1.61 | +16% | |
| $3.0T | 38.3 | 1.37 | +30% | |
| $5.0T | 42.4 | 0.44Best | +67% | |
| $137B | 29.5 | 16.04 | -15% |
Peers sorted by market capitalization. P/E below peers may indicate undervaluation or lower growth expectations. Consider PEG ratio for growth-adjusted comparison.
Full IONQ Stock Analysis
Analyst consensus, bull case, AI-generated risk factors, and peer comparison — all in one place.
See IONQ's True Return
Price is only half the story. See total return with reinvested dividends.
Launch CalculatorIs IONQ Undervalued?
DCF intrinsic value, peer multiples, and analyst estimates — see what the stock is really worth.
View ValuationCompare IONQ vs NVDA
Side-by-side business, growth, and profitability comparison vs NVIDIA Corporation.
Start ComparisonIONQ — Frequently Asked Questions
Quick answers to the most common questions about buying IONQ stock.
Is IONQ stock overvalued or undervalued?
IONQ current P/E: -28.9x. 5-year average P/E: N/A. Percentile: N/A.
How does IONQ's valuation compare to peers?
IonQ, Inc. P/E of -28.9x compares to sector median of 27.5x. The discount suggests lower growth expectations or higher risk.
What is IONQ's PEG ratio?
IONQ PEG ratio is N/A. Above 2.0 indicates premium valuation relative to growth rate. Historical P/E data spans 2026-2026.