Quantum-Si - 4 Year Stock Price History | QSI

The latest closing stock price for Quantum-Si as of February 21, 2025 is 1.71.

  • An investor who bought $1,000 worth of Quantum-Si stock at the IPO in 2021 would have $-825 today, roughly -1 times their original investment - a -35.29% compound annual growth rate over 4 years.
  • 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 237.4% above the current share price.
  • The Quantum-Si 52-week low stock price is 0.61, which is 64.3% below the current share price.
  • The average Quantum-Si stock price for the last 52 weeks is 1.45.
For more information on how our historical price data is adjusted see the Stock Price Adjustment Guide.

Quantum-Si - 4 Year Stock Price History | QSI

  • An investor who bought $1,000 worth of Quantum-Si stock at the IPO in 2021 would have $-825 today, roughly -1 times their original investment - a -35.29% compound annual growth rate over 4 years.
  • 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 237.4% above the current share price.
  • The Quantum-Si 52-week low stock price is 0.61, which is 64.3% below the current share price.
  • The average Quantum-Si stock price for the last 52 weeks is 1.45.
For more information on how our historical price data is adjusted see the Stock Price Adjustment Guide.