Quantum - 41 Year Stock Price History | QMCO

The latest closing stock price for Quantum as of July 03, 2025 is 9.06.

  • An investor who bought $1,000 worth of Quantum stock at the IPO in 1984 would have $-968 today, roughly -1 times their original investment - a -8.04% compound annual growth rate over 41 years.
  • The all-time high Quantum stock closing price was 5728.49 on September 23, 1997.
  • The Quantum 52-week high stock price is 90.64, which is 900.4% above the current share price.
  • The Quantum 52-week low stock price is 2.22, which is 75.5% below the current share price.
  • The average Quantum stock price for the last 52 weeks is 13.16.
For more information on how our historical price data is adjusted see the Stock Price Adjustment Guide.

Quantum - 41 Year Stock Price History | QMCO

  • An investor who bought $1,000 worth of Quantum stock at the IPO in 1984 would have $-968 today, roughly -1 times their original investment - a -8.04% compound annual growth rate over 41 years.
  • The all-time high Quantum stock closing price was 5728.49 on September 23, 1997.
  • The Quantum 52-week high stock price is 90.64, which is 900.4% above the current share price.
  • The Quantum 52-week low stock price is 2.22, which is 75.5% below the current share price.
  • The average Quantum stock price for the last 52 weeks is 13.16.
For more information on how our historical price data is adjusted see the Stock Price Adjustment Guide.