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QSI
NASDAQ Life Sciences

Quantum-Si's Proteus Hits 19 Amino Acids, Targets All 20 by Year-End

Tom Rudovsky · Reported by Wiseek News
More coverage: Biotech Stocks · Healthcare
Sentiment info
Positive
Importance info
7
Price
$1.23
Mkt Cap
$267.038M
52W Low
$0.69
52W High
$3.1
52W Position info
78% above low
Off High info
60% below high
Rel. Volume info
1.4× avg
Market data snapshot near publication time

QSI sits 78% above its 52-week low of $0.69.

Summary

Quantum-Si's Proteus platform now detects 19 amino acids, up from 18, and the company aims to demonstrate all 20 by year-end 2026. This follows the interim data presented at World HUPO 2026 showing a 30x improvement in sequencing alignments and 4.8x lower error rates. The milestone reduces technical risk ahead of the Q2 2027 commercial launch, which was delayed from earlier plans. The company is also deploying a development sequencing kit, moving the technology into routine testing. With a market cap around $267 million and a stock price near $1.23, this R&D progress is material for a company facing Nasdaq delisting and a 20% workforce reduction. The year-end target for all 20 amino acids is a near-term milestone that will validate the platform's readiness.

Updates

  1. · SEC 8-K — Quantum-Si is deploying 19-amino-acid detection into a developmental sequencing kit for routine use on integrated Proteus instruments.

At the time of this announcement, QSI was trading at $1.23 on NASDAQ in the Life Sciences sector, with a market capitalization of approximately $267M. The 52-week trading range was $0.69 to $3.10. This news item was assessed with positive market sentiment and an importance score of 7 out of 10. Source: Wiseek News.


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QSI - Latest Insights

QSI
Oct 08, 2026, 4:12 PM EDT
Filing Type: 8-K
Importance Score:
7
Price at Filing: $1.23
Real-time Price: $1.21 info
Change: -$0.0146 (-1%) info
Market Cap: $267.038M info
QSI
Sep 28, 2026, 8:29 PM EDT
Filing Type: 8-K
Importance Score:
7
Price at Filing: $0.800
Real-time Price: $1.21 info
Change: +$0.4123 (+52%) info
Market Cap: $267.038M info
QSI
Sep 28, 2026, 8:15 PM EDT
Source: GlobeNewswire
Importance Score:
7
Price at Filing: $0.830
Real-time Price: $1.21 info
Change: +$0.3823 (+46%) info
Market Cap: $267.038M info
QSI
Aug 28, 2026, 5:35 PM EDT
Filing Type: SCHEDULE 13D/A
Importance Score:
7
Price at Filing: $0.7876
Real-time Price: $1.21 info
Change: +$0.4247 (+54%) info
Market Cap: $267.038M info
QSI
Aug 13, 2026, 4:55 PM EDT
Filing Type: 10-Q
Importance Score:
8
Price at Filing: $0.8062
Real-time Price: $1.21 info
Change: +$0.4061 (+50%) info
Market Cap: $267.038M info