ARQQ Arqit Quantum Inc.US-listed
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Arqit Quantum Inc. stock surged on Nov 6: what happened
It closed at $15.96 on Nov 6 (+$3.68, +29.97%), ranking #24 among the top gainers of 5,527 US stocks priced $1 or more.
No disclosures were found for this stock around that day. Share what you know in the posts below.
Changes are calculated from the closing prices this site collects daily. Please make your own investment decisions.
Arqit Quantum Inc. (ARQQ) at a glance
Prices are from Yahoo! Finance and may be delayed. Always check the latest price before trading.
Arqit Quantum Inc. (ARQQ) Stock Price History
Arqit Quantum Inc. closed at $15.96 on Nov 6, 2026, −31.9% over 1 month, −52.8% over 1 year.
If you had invested $1,000 1 month ago, it would be worth $681 today (−31.9%).Price change only; dividends and fees are not included.
Over the same period the S&P 500 moved −5.7%, while this stock moved −31.9%.
Last 10 Trading Days
| Date | Close | Change | % Change |
|---|---|---|---|
| Nov 6 (Fri) | $15.96 | +3.68 | +29.97% |
| Nov 5 (Thu) | $12.28 | −1.59 | −11.46% |
| Nov 4 (Wed) | $13.87 | −1.13 | −7.53% |
| Nov 3 (Tue) | $15.00 | +0.75 | +5.26% |
| Nov 2 (Mon) | $14.25 | −1.48 | −9.41% |
| Oct 30 (Fri) | $15.73 | −1.87 | −10.63% |
| Oct 29 (Thu) | $17.60 | −0.87 | −4.71% |
| Oct 28 (Wed) | $18.47 | +0.43 | +2.38% |
| Oct 27 (Tue) | $18.04 | +1.75 | +10.71% |
| Oct 26 (Mon) | $16.30 | −0.11 | −0.70% |
If you had invested $1,000 3 months ago, it would be worth $743 today (−25.7%).Price change only; dividends and fees are not included.
Over the same period the S&P 500 moved −4.3%, while this stock moved −25.7%.
Last 10 Trading Days
| Date | Close | Change | % Change |
|---|---|---|---|
| Nov 6 (Fri) | $15.96 | +3.68 | +29.97% |
| Nov 5 (Thu) | $12.28 | −1.59 | −11.46% |
| Nov 4 (Wed) | $13.87 | −1.13 | −7.53% |
| Nov 3 (Tue) | $15.00 | +0.75 | +5.26% |
| Nov 2 (Mon) | $14.25 | −1.48 | −9.41% |
| Oct 30 (Fri) | $15.73 | −1.87 | −10.63% |
| Oct 29 (Thu) | $17.60 | −0.87 | −4.71% |
| Oct 28 (Wed) | $18.47 | +0.43 | +2.38% |
| Oct 27 (Tue) | $18.04 | +1.75 | +10.71% |
| Oct 26 (Mon) | $16.30 | −0.11 | −0.70% |
If you had invested $1,000 6 months ago, it would be worth $1,018 today (+1.8%).Price change only; dividends and fees are not included.
Over the same period the S&P 500 moved +0.2%, while this stock moved +1.8%.
Monthly Closes
| Month | Month-End Close | Monthly % |
|---|---|---|
| Nov 2026 | $15.96 | +1.5% |
| Oct 2026 | $15.73 | −34.6% |
| Sep 2026 | $24.06 | +21.0% |
| Aug 2026 | $19.88 | +16.1% |
| Jul 2026 | $17.13 | −42.4% |
| Jun 2026 | $29.72 | +80.0% |
| May 2026 | $16.51 | +15.0% |
If you had invested $1,000 1 year ago, it would be worth $472 today (−52.8%).Price change only; dividends and fees are not included.
Over the same period the S&P 500 moved +9.6%, while this stock moved −52.8%.
Monthly Closes
| Month | Month-End Close | Monthly % |
|---|---|---|
| Nov 2026 | $15.96 | +1.5% |
| Oct 2026 | $15.73 | −34.6% |
| Sep 2026 | $24.06 | +21.0% |
| Aug 2026 | $19.88 | +16.1% |
| Jul 2026 | $17.13 | −42.4% |
| Jun 2026 | $29.72 | +80.0% |
| May 2026 | $16.51 | +15.0% |
| Apr 2026 | $14.36 | +8.4% |
| Mar 2026 | $13.25 | −19.5% |
| Feb 2026 | $16.46 | −19.0% |
| Jan 2026 | $20.32 | −7.1% |
| Dec 2025 | $21.88 | −23.3% |
| Nov 2025 | $28.51 | ― |
If you had invested $1,000 3 years ago, it would be worth $1,274 today (+27.4%).Price change only; dividends and fees are not included.
Over the same period the S&P 500 moved +67.1%, while this stock moved +27.4%.
Yearly Closes
| Year | Year-End Close | Yearly % |
|---|---|---|
| 2026 (YTD) | $15.96 | −27.1% |
| 2025 | $21.88 | ― |
If you had invested $1,000 5 years ago, it would be worth $28 today (−97.2%).Price change only; dividends and fees are not included.
Over the same period the S&P 500 moved +57.5%, while this stock moved −97.2%.
Yearly Closes
| Year | Year-End Close | Yearly % |
|---|---|---|
| 2026 (YTD) | $15.96 | −27.1% |
| 2025 | $21.88 | ― |
If you had invested $1,000 in Mar 2021, it would be worth $67 today (−93.4%).Price change only; dividends and fees are not included.
Over the same period the S&P 500 moved +75.5%, while this stock moved −93.4%.
Yearly Closes
| Year | Year-End Close | Yearly % |
|---|---|---|
| 2026 (YTD) | $15.96 | −35.0% |
| 2025 | $24.54 | −38.1% |
| 2024 | $39.66 | +234.7% |
| 2023 | $11.85 | −86.9% |
| 2022 | $90.25 | −84.9% |
| 2021 | $598.75 | ― |
Daily, weekly and monthly closes (Yahoo! Finance, split-adjusted, dividends excluded). "All" covers the range Yahoo provides (from Mar 2021). Please check the latest prices before trading.
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