ARQQ vs. SPY
ARQQ (Arqit Quantum Inc.) is a stock, while SPY (State Street SPDR S&P 500 ETF) is S&P 500 fund tracking the S&P 500 Index. Over the past 3 years, ARQQ returned -16.99%/yr vs 20.07%/yr for SPY. At a 0.29 correlation, their price movements are largely independent.
Performance
ARQQ vs. SPY - Performance Comparison
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Returns By Period
In the year-to-date period, ARQQ achieves a -17.64% return, which is significantly lower than SPY's 10.45% return.
ARQQ
- 1D
- -5.56%
- 1M
- 32.50%
- 6M
- -32.26%
- YTD
- -17.64%
- 1Y
- -48.04%
- 3Y*
- -16.99%
- 5Y*
- —
- 10Y*
- —
SPY
- 1D
- -0.77%
- 1M
- 1.26%
- 6M
- 8.34%
- YTD
- 10.45%
- 1Y
- 21.46%
- 3Y*
- 20.07%
- 5Y*
- 12.94%
- 10Y*
- 15.08%
ARQQ vs. SPY - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | |
|---|---|---|---|---|---|---|
ARQQ Arqit Quantum Inc. | -17.64% | -43.67% | 227.76% | -86.87% | -84.93% | 158.92% |
SPY State Street SPDR S&P 500 ETF | 10.45% | 17.72% | 24.89% | 26.18% | -18.18% | 5.53% |
Correlation
The correlation between ARQQ and SPY is 0.49, which is low. Their price movements are largely independent, making them effective diversification partners.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.49 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.34 |
Correlation (All Time) Calculated using the full available price history since Sep 7, 2021 | 0.29 |
Over the past year, ARQQ and SPY have become more correlated (0.49) than their long-term average of 0.29, meaning their price movements have been converging.
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Return for Risk
ARQQ vs. SPY — Risk / Return Rank
ARQQ
SPY
ARQQ vs. SPY - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Arqit Quantum Inc. (ARQQ) and State Street SPDR S&P 500 ETF (SPY). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.
Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.
| ARQQ | SPY | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -2.14 | ||
| Sortino ratioReturn per unit of downside risk | -2.41 | ||
| Omega ratioGain probability vs. loss probability | 1.00 | 1.31 | -0.32 |
| Calmar ratioReturn relative to maximum drawdown | -0.60 | 2.43 | -3.03 |
| Martin ratioReturn relative to average drawdown | -0.86 | 10.57 | -11.43 |
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Drawdowns
ARQQ vs. SPY - Drawdown Comparison
The maximum ARQQ drawdown since its inception was -99.60%, which is greater than SPY's maximum drawdown of -55.19%. Use the drawdown chart below to compare losses from any high point for ARQQ and SPY.
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Drawdown Indicators
| ARQQ | SPY | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -99.60% | -55.19% | -44.41% |
Max Drawdown (1Y)Largest decline over 1 year | -79.78% | -8.88% | -70.90% |
Max Drawdown (3Y)Largest decline over 3 years | -89.69% | -18.76% | -70.93% |
Max Drawdown (5Y)Largest decline over 5 years | — | -24.50% | — |
Max Drawdown (10Y)Largest decline over 10 years | — | -33.72% | — |
Current DrawdownCurrent decline from peak | -98.11% | -1.12% | -96.99% |
Average DrawdownAverage peak-to-trough decline | -88.92% | -9.02% | -79.90% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 56.19% | 2.03% | +54.16% |
Volatility
ARQQ vs. SPY - Volatility Comparison
Arqit Quantum Inc. (ARQQ) has a higher volatility of 57.99% compared to State Street SPDR S&P 500 ETF (SPY) at 4.26%. This indicates that ARQQ's price experiences larger fluctuations and is considered to be riskier than SPY based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| ARQQ | SPY | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 57.99% | 4.26% | +53.73% |
Volatility (6M)Calculated over the trailing 6-month period | 80.86% | 10.01% | +70.85% |
Volatility (1Y)Calculated over the trailing 1-year period | 113.80% | 12.60% | +101.20% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 135.95% | 17.17% | +118.78% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 135.95% | 17.93% | +118.02% |
Dividends
ARQQ vs. SPY - Dividend Comparison
ARQQ has not paid dividends to shareholders, while SPY's dividend yield for the trailing twelve months is around 1.00%.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
ARQQ Arqit Quantum Inc. | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
SPY State Street SPDR S&P 500 ETF | 1.00% | 1.07% | 1.21% | 1.40% | 1.65% | 1.20% | 1.52% | 1.75% | 2.04% | 1.80% | 2.03% | 2.06% |
Frequently Asked Questions
ARQQ and SPY have a correlation of 0.49, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
ARQQ has higher volatility (57.99%) compared to SPY (4.26%). In terms of maximum drawdown, ARQQ dropped -99.60% vs SPY's -55.19%.
SPY currently has the higher Sharpe Ratio (1.71 vs -0.42), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.
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