Quantum is trading at $20.20, down -7.32%, as valuation-driven profit-taking extends its sharp pullback.
- The stock rallied from $11.78 on August 10 to $24.92 on August 17 following earnings.
- Technology and storage shares are also under pressure, while the Nasdaq Composite is down 0.53%, adding to risk-off sentiment.
- No new company announcement was identified for August 20, 2026.