
Quantum rose 107.4% from $8.19 to $16.99, ahead of the S&P 500's +10.5%. Its worst day was Jun 5 (−19.5%), and its low came Mar 30 at $4.31.
Story events cover the past 12 months · Times ET
Nov 10, 2025 – Nov 9, 2026 · picked from earnings, analyst actions, headlines and the biggest daily moves
EPS of $-0.54 missed the $-0.31 estimate on $62.7M revenue (est. $60.7M); Q3 revenue guidance of $65.0M–$69.0M against the $63.9M consensus.
+11.9% · S&P 500 0.0%
EPS of $-0.36 missed the $-0.28 estimate on $74.6M revenue (est. $63.9M); Q4 revenue guidance of $66.0M–$70.0M.
−2.5% · S&P 500 +0.5%
Quantum closed at its lowest level of the year, 47.4% below where the year started.
−7.9% · S&P 500 −0.3%
Quantum shares rose 21.3%, while the S&P 500 rose 1.4%.
+21.3% · S&P 500 +1.4%
Quantum shares rose 27.2%, while the S&P 500 fell 0.7%.
+27.2% · S&P 500 −0.7%
EPS of $-0.21 beat the $-0.29 estimate on $78.0M revenue (est. $76.6M); Q1 revenue guidance of $73.0M–$77.0M against the $71.8M consensus.
−9.9% · S&P 500 −0.7%
EPS of $0.18 beat the $-0.18 estimate on $80.8M revenue (est. $75.0M); Q2 revenue guidance of $80.0M–$84.0M against the $75.4M consensus.
+64.7%, the year's best day, on 17M shares, the year's heaviest volume · S&P 500 −0.3%
Quantum closed at its highest level of the year, 321.2% above where the year started.
+8.2% · S&P 500 +0.7%
Where it ended: a close of $16.99 on Nov 9, 2026. Up next: Q3 2027 earnings on Feb 16, 2027 (EPS est. $0.11, revenue est. $85.5M).
Nothing in the past 12 months.
All QMCO dividend history