Quantum-Si incorporated (QSI) Stock Analysis

Company Overview

Quantum-Si incorporated (QSI) carries a market capitalisation of $167.67M. It is classified in the Medical Devices industry, within the Healthcare sector. The company reports 145 employees.

QSI last closed at $0.77 on September 4, 2026. That is +$0.01 (+0.66%) against the previous close. The 52-week range on file runs from $0.69 to $3.10. The latest close sits 11.01% above that 52-week low.

Financial Health

In fiscal 2025, Quantum-Si incorporated reported revenue of $2.44M. That is −20.34% against the prior fiscal year, when revenue was $3.06M. The same year closed with a net loss of $101.34M. Profit margin runs at 0%. That is 1.7 percentage points above the Medical Devices median of −1.69%. Earnings per share on a trailing basis come to −0.46.

Across the 4 fiscal years on file, revenue moves from $0.00 in 2022 to $2.44M in 2025. Of those 4 years, 0 report positive net income.

Valuation Assessment

The record shows negative trailing earnings, so no price-to-earnings ratio is published. The price-to-sales ratio is 104.46. On price-to-sales that is 35.1 times the Medical Devices median of 2.98. 151 Medical Devices companies report these metrics, and the medians quoted come from that group.

The reported beta is 3.25. Daily returns over the trailing 5 years annualize to a volatility of 124.87%. Over the trailing twelve months the price has returned −28.41%. Measured over 5 years, that is −39.60% a year compounded.

Growth & Income

The record shows no dividend for QSI.

The strongest complete calendar year on file is 2024 at +34.33%; the weakest is 2022 at −76.75%. Of the 5 complete calendar years on file, 2 finished higher. 2026 is still running; the price is −30.36% year to date.