Skip to main content
Smart Investors Daily
QS

NASDAQ · QSI

Quantum-Si incorporated

Healthcare · Biotechnology

$1.28

Down-$0.04 (-2.73%)

Updated Oct 6, 2026, 5:33 PM

SID Score

5.8/10

Composite research score

Smart Money

—

Institutional and insider signal

Market cap
272.8M
P/E ratio
-2.41
Dividend yield
0.00%
52-week range
$0.69 – $1.55
Volume
19.18M
Avg. volume
11.82M

Price performance · QSI

QSI price history

1M range · 20 trading sessions · Daily adjusted prices

Prices through Oct 5, 2026

QSI closed at $1.28 after 20 trading sessions, up 68.42% for the selected period.

Last close
$1.28
Period change
+68.42%
Period low
$0.72
Period high
$1.55
Daily close
View OHLC price history
QSI OHLC price history, latest 40 sessions
DateOpenHighLowCloseVolume
Oct 5, 2026$1.525$1.53$1.2601$1.2819.18M
Oct 2, 2026$1.385$1.55$1.17$1.5518.77M
Oct 1, 2026$1.20$1.48$1.15$1.4333.06M
Sep 30, 2026$0.96$1.12$0.96$1.0713.84M
Sep 29, 2026$0.805$1.03$0.805$0.958123.01M
Sep 28, 2026$0.825$0.8338$0.795$0.7951.57M
Sep 25, 2026$0.7943$0.84$0.7755$0.83432.59M
Sep 24, 2026$0.75$0.7991$0.7434$0.7851.59M
Sep 23, 2026$0.79$0.805$0.7515$0.75871.48M
Sep 22, 2026$0.76$0.792$0.7511$0.78472.43M
Sep 21, 2026$0.7588$0.7661$0.75$0.75591.13M
Sep 18, 2026$0.79$0.8015$0.74$0.74511.71M
Sep 17, 2026$0.7495$0.7963$0.7495$0.772.83M
Sep 16, 2026$0.721$0.7532$0.721$0.7301915.22K
Sep 15, 2026$0.72$0.7409$0.72$0.721.17M
Sep 14, 2026$0.7287$0.7478$0.7201$0.7251.39M
Sep 11, 2026$0.7391$0.755$0.7391$0.741.07M
Sep 10, 2026$0.75$0.755$0.7251$0.73911.72M
Sep 9, 2026$0.7602$0.7748$0.746$0.751.45M
Sep 8, 2026$0.7672$0.79$0.76$0.761.05M

Latest QSI news

The latest Smart Investors Daily articles mentioning QSI.

QSI research

Overview

Company profile and research snapshot.

Company profile

Quantum-Si Inc is a life sciences company focused on the development and commercialization of proteomics research tools. The company has designed and developed a hardware, consumable, and software solution to provide a solution for protein detection and analysis. It has developed a proprietary universal single-molecule detection platform that enables Next-Generation Protein Sequencing (NGPS), the ability to sequence proteins.

Visit company website

Analyst outlook

Consensus and target data currently published for this company.

Consensus
—
Average target
$2.00
Implied upside
—
Analysts
—
QSI recent ratings
DateFirmRatingTarget
Sep 29, 2026HC Wainwright & Co.Buy—
Mar 5, 2026Canaccord GenuityHold—
Dec 22, 2025Canaccord GenuityHold—
Oct 27, 2025Canaccord GenuityHold—
Sep 9, 2025Canaccord GenuityHold—
Open full forecast

News briefing

No generated briefing is available yet.

AI research layers

Interpretive context generated from the platform’s current data sources.

No results

AI research layers have not been published yet.