Quantum-Si Incorporated Class A Common Stock (QSI) Stock Price

QSIStock

$0.77−32.17%52W

Market Cap$167.67M

P/E—

PEG Ratio—

Div yield—

Beta3.29

QSI Share Price Chart

Favorite Metrics

Price vs S&P 500 (26W)-28.06%

Price vs S&P 500 (4W)3.02%

VGM Score23.91

Book Value / Share (Quarterly)$0.92

P/TBV (Annual)1.79x

Indicated Dividend (Annual)$0.00

Cash Flow / Share (Quarterly)$-0.44

Price vs S&P 500 (YTD)-41.91%

Gross Margin (TTM)40.01%

Net Profit Margin (TTM)-5605.89%

EPS (TTM)$-0.51

10-Day Avg Trading Volume3.26M

EPS Excl Extra (TTM)$-0.51

EPS (Annual)$-0.51

ROI (Annual)-46.02%

Gross Margin (Annual)47.33%

Cash / Share (Quarterly)$0.59

Revenue Growth QoQ (YoY)-69.36%

ROA (Last FY)-41.26%

Revenue Growth TTM (YoY)-46.21%

EBITD / Share (TTM)$-0.53

ROE (5Y Avg)-37.01%

Operating Margin (TTM)-6211.66%

Cash Flow / Share (Annual)$-0.45

P/B Ratio0.86x

P/B Ratio (Quarterly)0.83x

Net Income / Employee (Annual)$-698,900

EV / Revenue (TTM)73.34x

ROA (TTM)-42.66%

EPS Incl Extra (Annual)$-0.51

Current Ratio (Annual)7.64x

Quick Ratio (Quarterly)11.91x

3-Month Avg Trading Volume4.93M

52-Week Price Return-32.17%

Revenue / Employee (TTM)$12,800

Tangible BV / Share (Quarterly)$1.29

P/S Ratio (Annual)70.62x

Asset Turnover (Annual)0.01x

52-Week High$3.10

EPS Excl Extra (Annual)$-0.51

CapEx CAGR (5Y)40.48%

26-Week Price Return-16.13%

Quick Ratio (Annual)7.30x

13-Week Price Return-35.00%

Total Debt / Equity (Annual)0.00x

Current Ratio (Quarterly)12.60x

Enterprise Value$135.83M

Asset Turnover (TTM)0.01x

Book Value / Share Growth (5Y)-31.37%

Revenue / Employee (Annual)$16,800

Pretax Margin (Annual)-4157.68%

Cash / Share (Annual)$0.75

3-Month Return Std Dev77.29%

Net Income / Employee (TTM)$-716,000

ROE (Last FY)-46.02%

EPS Basic Excl Extra (Annual)$-0.51

Receivables Turnover (TTM)3.00x

Total Debt / Equity (Quarterly)0.00x

EPS Incl Extra (TTM)$-0.51

ROI (TTM)-47.35%

P/S Ratio (TTM)92.89x

Revenue / Share (Annual)$0.01

Tangible BV / Share (Annual)$1.29

Price vs S&P 500 (52W)-50.73%

Year-to-Date Return-29.09%

5-Day Price Return1.39%

EPS Normalized (Annual)$-0.51

ROA (5Y Avg)-33.38%

Net Profit Margin (Annual)-4160.06%

Month-to-Date Return9.49%

Cash Flow / Share (TTM)$-0.73

EBITD / Share (Annual)$-0.56

Operating Margin (Annual)-4765.97%

ROI (5Y Avg)-37.01%

EPS Basic Excl Extra (TTM)$-0.51

P/TBV (Quarterly)1.79x

P/B Ratio (Annual)1.08x

Inventory Turnover (TTM)0.34x

Pretax Margin (TTM)-5609.94%

Book Value / Share (Annual)$1.02

Price vs S&P 500 (13W)-36.95%

Beta3.29x

Revenue / Share (TTM)$0.01

ROE (TTM)-47.35%

52-Week Low$0.69

vGradeD

gGradeF

mGradeD

vgmGradeD

QSI Earnings Surprise History

Quarter	Report date	EPS estimate	EPS actual	Surprise
Q2 2026	Aug 13, 2026	-$0.10	-$0.10	+4.84%(+$0.01)
Q1 2026	May 7, 2026	-$0.10	-$0.09	+10.80%(+$0.01)
Q4 2025	Mar 3, 2026	-$0.13	-$0.08	+41.38%(+$0.05)
Q3 2025	Nov 5, 2025	-$0.12	-$0.09	+25.50%(+$0.03)
Q2 2025	Aug 5, 2025	-$0.13	-$0.12	+11.54%(+$0.02)

QSI Analyst Recommendations

May 2026

Jun 2026

Jul 2026

Aug 2026

3.86

Industry Peers — Measuring & Controlling Devices(10)

Symbol	Value Score	Growth Score	Momentum Score	Price
QSIQuantum-Si Incorporated Class A Common Stock	D	F	D	$0.77
TMOThermo Fisher Scientific, Inc.	D	C	B	$613.69
ROKRockwell Automation, Inc.	D	C	B	$423.73
ONTOOnto Innovation Inc.	F	B	B	$268.32
TRMBTrimble Inc. Common Stock	B	C	C	$61.01
MIRMirion Technologies, Inc.	C	B	D	$14.47
OWLTOwlet, Inc.	B	C	D	$5.07
GEOSGeospace Technologies Corporation Common Stock	B	D	D	$5.26
BCHTBirchtech Corp.	C	B	F	$1.21
APMAptorum Group Limited Class A Ordinary Shares	C	—	D	$7.54
NIKINiki BioSolutions, Inc. Common Stock	—	—	F	$6.61

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.