• Oct 26, 2026

  $16.30-0.70%

• Oct 23, 2026

  $16.41+3.80%

  The shares rose 3.80% while the broad market, measured by the S&P 500 ETF, fell 0.52% [1]. The move was therefore not shared by the broad market. Volume ran at 0.5x the trailing 20-session average, within a range of 9.3% of the low [2].

  • 1Broad market
  • 2Market data

• Oct 22, 2026

  $15.81-3.60%

  The shares fell 3.60% on a day when the S&P 500 ETF (SPY) moved -1.18% [1]. The decline came alongside a broad-market decline, though it was larger than the benchmark's move [1].

  • 1Broad market

• Oct 21, 2026

  $16.40+7.12%

  The shares rose 7.12% while the broad market, measured by the S&P 500 ETF, rose only 0.53% the same session [1]. The move was therefore largely not shared by the broad market [1].

  • 1Broad market

• Oct 20, 2026

  $15.31+9.20%

  Globenewswire carried Arqit's announcement of a strategic investment in Sirius to strengthen quantum-safe communications for defence and government [1]. The shares rose 9.20% while the S&P 500 ETF (SPY) moved +0.34%, so the move was not shared by the broad market [2].

  • 1Globenewswire
  • 2Broad market

• Oct 19, 2026

  $14.02+0.00%

• Oct 16, 2026

  $14.02-11.82%

  The broad market, measured by the S&P 500 ETF (SPY), fell 1.11% on the session, while the shares fell 11.82% [1]. The decline was much larger than the broad-market move and was not shared to that degree by the market.

  • 1Broad market

Closing prices for ARQQ. Summaries describe past sessions only and are not advice, a forecast or a recommendation.

Headlines are published by third parties and linked as reported. Amaltash does not endorse or verify them.