QSI QuantumSi Inc
Company Analysis
Latest News
🔴 QuantumSi is trading 6.88% down in pre-market amid possible biotech-sector pressure
QuantumSi is trading at $1.33, down 6.88%, with biotech-sector weakness a possible contributor. - No October 2 company announcement was identified to explain...
🟢 QuantumSi is trading 13% up today after Proteus detected all 24 proteins
QuantumSi is trading 13% up at $1.21 after interim Proteus results showed detection of all 24 proteins in a test panel. - Findings were announced September 28...
🟢 QuantumSi is trading 9.4% up after Proteus detected all 24 proteins in panel
QuantumSi is trading 9.35% up at $1.17 on October 1 after interim Proteus results detected all 24 panel proteins. - Proteus showed substantially more...
🟢 QuantumSi is trading 10.34% up in pre-market after interim results showed Proteus outperforming Platinum Pro
QuantumSi is trading 10.34% up at $1.18 in pre-market on October 1 after interim results showed Proteus outperforming Platinum Pro across reported measures. -...
🟢 QuantumSi is trading 11.2% up in after-hours trading amid previously released Proteus results
QuantumSi is trading 11.21% up at $1.19, versus its September 30 regular-session close of $1.07, after interim results showed Proteus outperformed Platinum Pro...
🟢 QuantumSi is trading 7.46% up in after-hours trading after Proteus outperformed Platinum Pro
QuantumSi is trading at $1.15, up 7.46% after hours, apparently following interim Proteus data presented at World HUPO showing the developmental platform...
🟢 QuantumSi is trading 11% up today after interim Proteus outperformed Platinum Pro
QuantumSi is trading at $1.06, up +10.55%, after interim Proteus results showed outperformance versus Platinum Pro. - Results were announced September 28 and...
🟢 QuantumSi is trading 6.5% up today after interim Proteus results
QuantumSi is trading 6.46% up at $1.02 on September 30, likely reflecting interim Proteus results announced September 28. - Presented at World HUPO on...
QuantumSi's New Protein Sequencer Posts Eye-Popping Benchmark Numbers, but Can a Sub-Dollar Stock Turn Lab Results Into Revenue?
Shares of QuantumSi surged 12.5% to $0.89 on September 29 as the protein-sequencing startup unveiled interim performance data for its next-generation...
🟢 QuantumSi is trading 12% up today after Proteus outperformed Platinum Pro
QuantumSi is trading at $0.89, up 12.48%, after interim Proteus results showed stronger performance than Platinum Pro. - Across reported sequencing measures,...
🟢 QuantumSi is trading 6% up today after interim Proteus results outperformed Platinum Pro
QuantumSi is trading 6.11% up now at $0.84 after announcing interim Proteus results ahead of its September 29, 2026 presentation at the World HUPO Congress. -...
Quantum-Si Presents Data on Next-Gen Proteus Platform Showing Superior Performance
Quantum-Si Incorporated (QSI) announced interim development results for its next-generation Proteus™ protein sequencing platform, demonstrating a significant...
Quantum-Si Shows Proteus Delivered 30x More Alignments Than Platinum Pro
Quantum-Si announced interim development data for its next-generation Proteus™ protein sequencing platform, reporting performance gains over its on-market...
🟢 QuantumSi is trading 5% up with no clear company-specific catalyst
QuantumSi is trading 5.03% up at $0.82, with no clear company-specific announcement explaining the September 25, 2026 move. - The broader market is higher,...
🟢 QuantumSi is trading 5% up today with no clear company-specific catalyst
QuantumSi is trading at $0.80, up 5.10% on September 24, 2026, with no clear company-specific catalyst explaining the move. - The company scheduled a New York...
🟢 QuantumSi is trading 6.6% up today amid biotech strength and broader market rally
QuantumSi is trading at $0.78, up 6.56%, alongside a stronger biotechnology sector and broader market rally. - The company has not reported a new announcement...
🟢 QuantumSi is trading 5.45% up today as Nvidia outlook lifts tech sentiment
QuantumSi is trading at $0.83 (+5.45%) amid broader technology and growth-stock strength. - No fresh company-specific announcement was identified for August...
🔴 QuantumSi is trading 5% down today
QuantumSi is trading at $0.80, down -5.22%, with no clear company-specific catalyst identified in available coverage. - No new August 26, 2026...
🟢 QuantumSi is trading 10.36% up today on broader biotech-sector strength
QuantumSi is trading 10.36% up at $0.85, supported mainly by broader biotech-sector strength rather than a newly reported company-specific catalyst. - Biotech...
🟢 QuantumSi rises 5.3% — Biotech Sector Gains Amid Broad Market Rally and Positive Sentiment
With Biotech (XBI) up 2.1%, this looks like a sector-led move rather than a company-specific surprise. The biotech sector, represented by the XBI ETF, is...