QuantumSi Inc (QSI)

Name: QuantumSi Inc (QSI) Share Price Today, Stock Analysis, Annual Report | Value Research
Brand: QuantumSi Inc (QSI)

Stock Card

$0.78

$-0.02 (-2.88%)

As on 28-Aug-2026 16:21EDT

Market cap

$171 Mln

Revenue (TTM)

$2 Mln

P/E Ratio

P/B Ratio

Div. Yield

0 %

QuantumSi Inc (QSI) Share Price

Compare

High: Low: Return:

Price P/E Ratio P/B Ratio

Stock Range

Today’s Range

Low: 0.77 High: 0.82

52 Week Range

Low: 0.69 High: 3.10

Liquidity

Low Moderate High

Fundamentals

Net Profit (TTM)

$0 Mln
ROE

-0.5 %
ROCE

-- %
Industry P/E

--
EV/EBITDA

0.6
Debt to Equity

0
Book Value

$0.8
EPS

$-0.5
Face value

--
Shares outstanding

198,946,412

5 Years Aggregate

CFO

$-314.69 Mln

EBITDA

$-410.57 Mln

Net Profit

$-398.36 Mln

Company	YTD	1 Month	3 Months	1 Year	3 Years	5 Years	10 Years
QuantumSi Inc (QSI)	-29.1	-0.4	-31.0	-32.8	-28.3	-39.6	--
BSE Sensex	-8.8	0.6	1.8	-4.4	6.0	6.6	10.8
S&P Small-Cap 600^#	-5.8	-5.3	-13.7	-6.3	5.3	3.0	5.5

As on 28-Aug-2026 | #As on 26-Oct-2023

Company	2025	2024	2023	2022
QuantumSi Inc (QSI)	-59.3	34.0	9.8	-76.7
S&P Small-Cap 600	4.0	7.0	13.9	-17.4
BSE Sensex	9.1	8.1	18.7	4.4

Essential Checks

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Is there a threat to the company's solvency?

Can creative accounting be detected through the financial numbers?

How did the company perform in the last one year?

Financials

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Key Ratios

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Peers

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Company	Price ($)	Market Cap ($ Mln)	Revenue (TTM)	Net Profit (TTM)	OPM (%)	ROE (%)	P/E	P/B
QuantumSi Inc (QSI)	0.8	170.7	1.6	-98.5	-4,332.9	-49.2	--	1.0
Arrowhead Pharmaceuticals (ARWR)	84.9	11,993.9	669.5	-320.0	-0.8	-71.1	--	26.9
Cytokinetics Inc (CYTK)	72.1	10,022.2	71.0	-894.0	-1,175.8	--	--	60.3
Exelixis (EXEL)	54.5	13,491.7	2,435.9	860.6	31.0	43	17.4	7.4
Halozyme Therapeutics (HALO)	105.4	11,957.0	1,663.7	413.6	36.3	430	30.9	84.5
Krystal Biotech (KRYS)	351.5	10,402.8	440.5	241.5	33.4	18.7	44.1	7.8
Madrigal Pharmaceuticals (MDGL)	533.8	12,332.1	1,283.9	-325.1	-19.0	-57.7	--	24.0
Medpace Holdings (MEDP)	600.7	16,765.1	2,782.3	491.5	21.1	110.1	35.2	39.3
Praxis Precision MedicinesÂ Inc (PRAX)	344.8	9,625.4	0.0	-339.1	--	-30.6	--	7.6
Protagonist Therapeutics (PTGX)	144.3	9,339.4	282.0	82.9	-28.6	11.4	140.1	11.5

Shareholding Pattern

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About QuantumSi Inc (QSI)

Quantum-Si incorporated, a life sciences company, develops proprietary, universal, and single-molecule detection platform applied to proteomics to enable next-gen protein sequencing (NGPS). The company offers Platinum and Platinum Pro NGPS... instruments for single-molecule, amino acid level resolution, and automated data analysis; library preparation kits to prepare a customer's protein sample for sequencing; and sequencing kits, which contain the reagents and consumables used to perform NGPS. It also provides Platinum analysis software, a cloud-based solution that automates data analysis workflows and visualizes the sequencing results. The company was founded in 2013 and is headquartered in Branford, Connecticut. Read more

Founder & Executive Chairman

Dr. Jonathan M. Rothberg Ph.D.
Founder & Executive Chairman

Dr. Jonathan M. Rothberg Ph.D.
Headquarters

Branford, CT
Website

https://www.quantum-si.com

FAQs for QuantumSi Inc (QSI)

What is the current share price of QuantumSi Inc (QSI) Today?

The share price of QuantumSi Inc (QSI) is $0.78 (NASDAQ) as of 28-Aug-2026 16:21 EDT. QuantumSi Inc (QSI) has given a return of -28.34% in the last 3 years.

What is the current PB & PE ratio of QuantumSi Inc (QSI)?

Since, TTM earnings of QuantumSi Inc (QSI) is negative, P/E ratio is not available.
The P/B ratio of QuantumSi Inc (QSI) is 0.98 times as on 28-Aug-2026, a 81 discount to its peers’ median range of 5.18 times.

PE & PB ratio at the end of financial year.