Skip to main navigation
Quantum Si logo
  • Technology
  • Products
  • Applications
    • Antibody Characterization
    • Biomarker Identification
    • Protein Identification
    • Protein Variant
    • PTM Analysis
  • Resources
  • Investors
    • Press Releases
    • Events and Presentations
    • Stock Information
    • Financials
    • Governance
    • Investor Resources
  • About Us
    • Careers
    • Leadership
  • Contact Us
Select Page
Quantum-Si Incorporated logo
    • Technology
    • Products
    • Applications
      • Antibody Characterization
      • Biomarker Identification
      • Protein Identification
      • Protein Variant
      • PTM Analysis
    • Resources
    • Investors
      • Press Releases
      • Events and Presentations
      • Stock Information
      • Financials
      • Governance
      • Investor Resources
    • About Us
      • Careers
      • Leadership
    • Contact Us

Historic Price Lookup

  • Overview
  • Press Releases
  • Events & Presentations
    Events Presentations
  • Stock Information
    Stock Quote & Chart Analyst Coverage Historic Price Lookup
  • Financials
    Quarterly Results Annual Reports SEC Filings
  • Governance
    Governance Highlights Leadership Board of Directors Committee Composition
  • Investor Resources
    Investor FAQs Investor Email Alerts Investor Contact

Week of June 15, 2026

Date Requested Closing Price Volume Open Price Day High Day Low
June 15, 2026 $0.99 9,413,492 $1.01 $1.05 $0.98
June 16, 2026 $0.95 3,723,597 $0.99 $0.99 $0.94
June 17, 2026 $0.94 3,461,927 $0.97 $1.00 $0.93
June 18, 2026 $1.00 6,339,570 $0.96 $1.03 $0.96

NOTE: The Closing Price, Day's High, Day's Low, and Day's Volume have been adjusted to account for any stock splits and/or dividends which may have occurred for this security since the date shown. The Split Adjustment Factor is a cumulative factor which encapsulates all splits since the date shown. The closing price is not necessarily indicative of future price performance.

Minimum 15 minutes delayed. Source: LSEG

  • Print Page
  • Email Alerts
  • RSS Feeds
  • Contact IR
Quantum-Si Incorporated logo
© Copyright 2026 QuantumSi | All rights reserved.
Follow us
  • LinkedIn
  • Twitter
  • Youtube
  • Instagram
  • Facebook