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QSI
Quantum-Si Incorporated Class A Common Stock
stock NASDAQ

At Close

Sep 29, 2026 3:59:48 PM EDT

0.9600USD+20.792%(+0.1650)22,869,241

0.00Bid 0.00Ask 0.0000Spread

Pre-market

Sep 29, 2026 9:17:30 AM EDT

0.8154USD+2.566%(+0.0204)4,184

After-hours

Sep 29, 2026 4:59:30 PM EDT

0.9556USD-0.489%(-0.0047)64,631

OverviewOptionsHistoricalExchangesShortsNews

Jan 10, 2022

04:30PM EST Quantum-Si Says Has Established List Prices For End-To-End Protein Sequencing Platform; Will Begin Taking Pre-Orders In H1 2022 For Delivery At Full Commercial Release Benzinga

04:10PM EST Quantum-Si Provides Business Updates at the 40th Annual J.P. Morgan Healthcare Conference Business Wire

Jan 4, 2022

08:00AM EST Quantum-Si Signs Lease for New Headquarters in New Haven Business Wire

Dec 23, 2021

11:29AM EST Quantum-Si Option Alert: Jan, 2024 $12.5 Calls at the Ask: 178 @ $1.8 vs 1350 OI; Earnings 2/15 Before Open [est] Ref=$8.1208 Benzinga

Dec 21, 2021

08:00AM EST Quantum-Si to Present at the 40th Annual J.P. Morgan Healthcare Conference Business Wire

Dec 14, 2021

09:33AM EST Quantum-Si Reports Will Be Added To Nasdaq Biotech Index, Effective Monday, Dec. 20, 2021 Benzinga

09:25AM EST Quantum-Si Added to the Nasdaq Biotechnology Index Business Wire

Dec 2, 2021

10:16AM EST -- Veteran finance executive brings exceptional life science and medical device expertise to Board of Directors GlobeNewswire Inc

Nov 10, 2021

06:20PM EST Quantum-Si Q3 EPS $(0.13) Beats $(0.17) Estimate Benzinga

04:06PM EST Quantum-Si Reports Third Quarter 2021 Financial Results Business Wire

Nov 9, 2021

11:43AM EST Quantum-Si Acquires Majelac Technologies; No Terms Disclosed Benzinga

08:00AM EST Quantum-Si Acquires Majelac Technologies to Strengthen Chip Supply Chain Business Wire

Nov 4, 2021

04:07PM EDT Quantum-Si to Participate in the 2021 Canaccord Genuity Virtual MedTech, Diagnostics and Digital Health & Services Forum Business Wire

Oct 21, 2021

04:16PM EDT Quantum-Si to Report Third Quarter 2021 Financial Results on November 11, 2021 Business Wire

Oct 20, 2021

10:14AM EDT Benzinga's Top Ratings Upgrades, Downgrades For October 20, 2021 Benzinga

08:21AM EDT Canaccord Genuity Initiates Coverage On Quantum-Si with Buy Rating, Announces Price Target of $13 Benzinga

Oct 19, 2021

04:16PM EDT Quantum-Si Announces Expansion Of Early Access Program For Platinum Single Molecule Protein Sequencing Platform Benzinga

04:15PM EDT Quantum-Si Announces Expansion of Early Access Program for the Platinum(tm) Single Molecule Protein Sequencing Platform Business Wire

Sep 21, 2021

04:15PM EDT Quantum-Si Incorporated to Participate in the 2021 Cantor Fitzgerald Virtual Global Healthcare Conference Business Wire

Aug 16, 2021

04:08PM EDT Quantum-Si Q2 EPS $(3.05) Down From $(1.53) YoY Benzinga

04:05PM EDT Quantum-Si Reports Second Quarter 2021 Financial Results Business Wire

04:04AM EDT Earnings Scheduled For August 16, 2021 Benzinga

Aug 11, 2021

07:00AM EDT Quantum-Si to Report Second Quarter 2021 Financial Results on August 16, 2021 Business Wire

Jul 8, 2021

04:40PM EDT Portable MRI Device Maker Hyperfine Going Public Via SPAC: What Investors Should Know Benzinga

Jul 2, 2021

12:04AM EDT Cathie Wood Sells $11M In Roku Benzinga

Jun 24, 2021

04:07PM EDT Quantum-Si Signs Lease for Product Development and Operations Facility in San Diego Biotechnology Hub Benzinga

Jun 10, 2021

12:04PM EDT Quantum-Si, Revolutionizing Proteomics, Closes Business Combination and Will Begin Trading Under the Ticker "QSI" on the Nasdaq Stock Exchange Business Wire

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