Quantum-Si - 4 Year Stock Price History | QSI

Historical daily share price chart and data for Quantum-Si since 2021 adjusted for splits and dividends. The latest closing stock price for Quantum-Si as of January 10, 2025 is 2.65.
  • The all-time high Quantum-Si stock closing price was 13.56 on July 09, 2021.
  • The Quantum-Si 52-week high stock price is 5.77, which is 117.7% above the current share price.
  • The Quantum-Si 52-week low stock price is 0.61, which is 77% below the current share price.
  • The average Quantum-Si stock price for the last 52 weeks is 1.40.
For more information on how our historical price data is adjusted see the Stock Price Adjustment Guide.
Quantum-Si Historical Annual Stock Price Data
Year Average Stock Price Year Open Year High Year Low Year Close Annual % Change
2025 3.5717 4.2600 4.2900 2.6400 2.6450 -2.04%
2024 1.3679 2.0300 3.6000 0.6330 2.7000 34.33%
2023 1.8685 1.8400 3.8900 1.1450 2.0100 9.84%
2022 3.6115 8.2200 8.2200 1.8200 1.8300 -76.75%
Sector Industry Market Cap Revenue
Computer and Technology Semiconductors $0.608B $0.001B
Quantum-Si Incorporated is a company pioneering next-generation semiconductor chip-based proteomics. Quantum-Si Incorporated, formerly known as HighCape Capital Acquisition Corp., is based in NEW YORK.
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Indie Semiconductor (INDI) United States $0.850B 0.00
Ceva (CEVA) United States $0.754B 0.00
Ams-OSRAM AG (AMSSY) Austria $0.701B 0.00
SEALSQ (LAES) Switzerland $0.668B 0.00
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SkyWater Technology (SKYT) United States $0.642B 0.00
NLight (LASR) United States $0.504B 0.00
POET Technologies (POET) Canada $0.472B 0.00
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Atomera (ATOM) United States $0.372B 0.00
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Silvaco (SVCO) United States $0.233B 0.00
QuickLogic (QUIK) United States $0.176B 0.00
IQE (IQEPF) United Kingdom $0.136B 0.00
GCT Semiconductor Holding (GCTS) United States $0.108B 0.00
AXT Inc (AXTI) United States $0.098B 0.00
Sequans Communications S.A (SQNS) France $0.088B 2.30
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Nano Labs (NA) China $0.049B 0.00
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SemiLEDS (LEDS) Taiwan $0.010B 0.00
SmartKem (SMTK) United Kingdom $0.006B 0.00