
Arqit Quantum fell 47.6% from $32.19 to $16.86, behind the S&P 500's +10.0%. Its worst day was Sep 14 (−18.8%), and its low came Mar 27 at $11.78.
Nov 10, 2025 – Nov 9, 2026 · picked from earnings, analyst actions, headlines and the biggest daily moves
EPS of $-2.56 missed the $-2.55 estimate on $530,000.00 revenue (est. $2.7M).
0.0% · S&P 500 −0.1%
Arqit Quantum closed at its lowest level of the year, 63.4% below where the year started.
Story events cover the past 12 months · Times ET
−7.8% · S&P 500 −1.7%
EPS of $-1.99 was reported on $623,000.00 revenue (est. $535,000.00).
+25.7% · S&P 500 +0.2%
Arqit Quantum shares rose 31.8%, while the S&P 500 rose 1.8%.
+31.8% · S&P 500 +1.8%
Arqit Quantum shares rose 35.6%, while the S&P 500 fell 1.5%.
+35.6%, the year's best day · S&P 500 −1.5%
Arqit Quantum shares fell 18.5%, while the S&P 500 fell 0.1%.
−18.5% · S&P 500 −0.1%
Arqit Quantum shares rose 19.1%, while the S&P 500 rose 1.8%.
+19.1% · S&P 500 +1.8%
Arqit Quantum shares fell 18.8%, while the S&P 500 fell 0.4%.
−18.8%, the year's worst day · S&P 500 −0.4%
Where it ended: a close of $16.86 on Nov 9, 2026. Up next: FY 2026 earnings on Dec 8, 2026 (EPS est. $-1.52, revenue est. $2.5M).
Nothing in the past 12 months.
All ARQQ analyst actionsNothing in the past 12 months.
All ARQQ dividend historyReplay the year: the line draws itself and stops at each of the 8 moments with what happened and how the stock reacted.
Chart by ChartIQ. Events, ratings, quote and fundamentals from Benzinga APIs. Daily bars for ARQQ and SPY from Benzinga historical bars. Not investment advice.