Quantum-Si Incorporated Class A Common Stock (QSI) Stock Price
QSIStock
$1.12−55.91%52W
Market Cap$245.15M
P/E—
PEG Ratio—
Div yield—
Beta3.32
QSI Share Price Chart
Favorite Metrics
Price vs S&P 500 (26W)23.27%
Price vs S&P 500 (4W)49.49%
VGM Score29.18
QSI Earnings Surprise History
| Quarter | Report date | EPS estimate | EPS actual | Surprise |
|---|---|---|---|---|
| Q2 2026 | -$0.10 | -$0.10 | +4.84%(+$0.01) | |
| Q1 2026 | -$0.10 | -$0.09 | +10.80%(+$0.01) | |
| Q4 2025 | -$0.13 | -$0.08 | +41.38%(+$0.05) | |
| Q3 2025 | -$0.12 | -$0.09 | +25.50%(+$0.03) | |
| Q2 2025 | -$0.13 | -$0.12 | +11.54%(+$0.02) |
QSI Analyst Recommendations
Jun 2026
Jul 2026
Aug 2026
Sep 2026
3.86
3.86
3.86
3.86
Industry Peers — Measuring & Controlling Devices(11)
| Symbol | Value Score | Growth Score | Momentum Score | P/S Ratio (TTM) | Revenue Growth (5Y) | Gross Margin (TTM) | Operating Margin (TTM) | Price |
|---|---|---|---|---|---|---|---|---|
QSIQuantum-Si Incorporated Class A Common Stock | D | F | C | 152.7x | — | 35.0% | -6887.8% | $1.12 |
| TMOThermo Fisher Scientific, Inc. | D | C | A | 5.5x | 6.7% | 40.9% | 17.6% | $690.00 |
| ROKRockwell Automation, Inc. | D | C | B | 5.3x | 5.7% | 54.5% | 14.7% | $426.23 |
| TRMBTrimble Inc. Common Stock | C | C | B | 3.6x | -0.4% | 70.5% | 3.7% | $59.46 |
| ONTOOnto Innovation Inc. | D | B | C | 9.7x | 12.6% | 55.1% | 12.0% | $220.70 |
| MIRMirion Technologies, Inc. | C | B | C | 3.7x | 8.6% | 48.0% | 5.3% | $15.15 |
| OWLTOwlet, Inc. | B | B | D | 1.0x | 7.0% | 54.8% | -8.4% | $4.11 |
| GEOSGeospace Technologies Corporation Common Stock | B | F | D | 0.6x | 4.8% | 8.0% | -44.6% | $4.41 |
| BCHTBirchtech Corp. | B | B | D | 1.6x | 16.6% | 39.7% | -23.6% | $1.18 |
| NIKINiki BioSolutions, Inc. Common Stock | — | — | F | 5.3x | — | 7.1% | -1298.4% | $2.03 |
| APMAptorum Group Limited Class A Ordinary Shares | C | — | D | 4.7x | — | 7.1% | -1298.4% | $4.82 |
About Quantum-Si Incorporated Class A Common Stock
Quantum-Si Inc provides proteomics research instruments and tools for protein detection and analysis. The company's proprietary single-molecule detection platform enables Next-Generation Protein Sequencing (NGPS), allowing researchers to sequence proteins with unprecedented capabilities. Its integrated hardware, consumable, and software solutions serve the life sciences research market.