Quantum-SiQSI.OValuation Analysis
Based on the blended 10-year P/E and P/B percentiles, the stock currently sits in the “Richly Valued” zone.
As of Oct 16, 2026, Quantum-Si (QSI.O) trades at a negative P/E (-2.49x, due to a recent net loss), P/B of 1.37x, P/S of 152.70x, and a dividend yield of 0.00%.
Longitudinal percentile comparison: P/E historical percentile is still accumulating data over the trailing long-term window (vs. the short-term percentile still accumulating data); P/B sits at the 70th percentile over the trailing 10Y window (vs. 85th percentile over 3Y); P/S sits at the 80th percentile over the trailing 10Y window (vs. 80th percentile over 3Y).
Cross-sectional valuation: its P/B ranks at the 33rd percentile within its industry and the 43rd percentile across the broader market.
Shareholder return highlight: Total Shareholder Yield is 0.00%; its historical percentile over the trailing long-term window is still accumulating data.
Relative to industry peers, its P/B shows a deeper discount than it does against the broader market. Shareholder returns here are driven almost entirely by cash dividends, with minimal contribution from buybacks. Quantum-Si operates in the Manufacturing sector. Data refreshes weekly and is for reference only, not investment advice.
Also listed as: NASDAQ: QSI · QSI
Want the full picture on whether Quantum-Si (QSI.O) is under- or over-valued? See the full 3Y / 5Y / 10Y / 20Y P/E, P/B, P/S, Dividend Yield & Total Shareholder Yield percentile matrix and the interactive ECharts trend chart on this page.
Historical Percentiles by Metric
| Metric | Current | Market Percentile | Industry Percentile | 3Y Pctl | 5Y Pctl | 10Y Pctl | 20Y Pctl |
|---|---|---|---|---|---|---|---|
| P/E (TTM) | -2.49 | Negative | Negative | Negative | Negative | Negative | Negative |
| P/B (MRQ) | 1.37 | ||||||
| P/S (TTM) | 152.70 | ||||||
| Dividend Yield | 0.00% | 0 | 0 | 0 | 0 | 0 | 0 |
| Buyback + Div Yield | 0.00% | 0 | 0 | 0 | 0 | 0 | 0 |