QMCO vs. ARQQ
QMCO (Quantum Corporation) and ARQQ (Arqit Quantum Inc.) are both stocks. Both are in the Technology sector — QMCO in Computer Hardware, ARQQ in Software - Infrastructure. Over the past 3 years, QMCO returned -23.10%/yr vs -14.24%/yr for ARQQ. Their 0.31 correlation means their historical movements had little consistent relationship.
Performance
QMCO vs. ARQQ - Performance Comparison
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Returns By Period
In the year-to-date period, QMCO achieves a 64.96% return, which is significantly higher than ARQQ's -15.68% return.
QMCO
- 1D
- -5.34%
- 1M
- 4.72%
- 6M
- 71.61%
- YTD
- 64.96%
- 1Y
- 41.30%
- 3Y*
- -23.10%
- 5Y*
- -38.81%
- 10Y*
- -20.32%
- ALL TIME*
- -18.32%
ARQQ
- 1D
- 7.71%
- 1M
- -21.54%
- 6M
- -8.53%
- YTD
- -15.68%
- 1Y
- -42.97%
- 3Y*
- -14.24%
- 5Y*
- —
- 10Y*
- —
- ALL TIME*
- -40.29%
Liquidity Comparison
| Position | Avg. Volume Value (2W) | Avg. Volume Value (1M) | Avg. Volume Value (3M) |
|---|---|---|---|
| $5.50M | $7.98M | $17.76M | |
| $10.63M | $9.59M | $13.73M |
QMCO vs. ARQQ - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | |
|---|---|---|---|---|---|---|
QMCO Quantum Corporation | 64.96% | -88.04% | 672.49% | -67.98% | -80.25% | -7.07% |
ARQQ Arqit Quantum Inc. | -15.68% | -43.67% | 227.76% | -86.87% | -84.93% | 158.92% |
Correlation
The correlation between QMCO and ARQQ is 0.57, which is moderate. They have sometimes moved together and sometimes differently, sharing some price drivers without tracking each other closely.
| Correlation | |
|---|---|
Correlation (1Y) Focuses on recent behavior, but can change the most. | 0.57 |
Correlation (3Y) Balances recent behavior with more history. | 0.41 |
Correlation (All Time) Calculated using the full available price history since Sep 7, 2021 | 0.31 |
Over the past year, QMCO and ARQQ have become more correlated (0.57) than their long-term average of 0.31, meaning their price movements have been converging.
Fundamentals
QMCO:
$66.49M
ARQQ:
$321.07M
QMCO:
-$7.68
ARQQ:
-$4.72
QMCO:
0.50
ARQQ:
205.90
QMCO:
$279.58M
ARQQ:
$1.43M
QMCO:
$103.04M
ARQQ:
-$307.00K
QMCO:
-$67.70M
ARQQ:
-$68.30M
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Return for Risk
QMCO vs. ARQQ — Risk / Return Rank
QMCO
ARQQ
QMCO vs. ARQQ - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Quantum Corporation (QMCO) and Arqit Quantum Inc. (ARQQ). 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.
| QMCO | ARQQ | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +0.69 | ||
| Sortino ratioReturn per unit of downside risk | +1.17 | ||
| Omega ratioGain probability vs. loss probability | 1.15 | 1.01 | +0.13 |
| Calmar ratioReturn relative to maximum drawdown | 0.49 | -0.54 | +1.03 |
| Martin ratioReturn relative to average drawdown | 0.85 | -0.74 | +1.59 |
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Drawdowns
QMCO vs. ARQQ - Drawdown Comparison
The maximum QMCO drawdown since its inception was -99.93%, roughly equal to the maximum ARQQ drawdown of -99.60%. Use the drawdown chart below to compare losses from any high point for QMCO and ARQQ.
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Drawdown Indicators
| QMCO | ARQQ | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -99.93% | -99.60% | -0.33% |
Max Drawdown (1Y)Largest decline over 1 year | -67.72% | -79.78% | +12.06% |
Max Drawdown (3Y)Largest decline over 3 years | -93.90% | -87.04% | -6.86% |
Max Drawdown (5Y)Largest decline over 5 years | -98.26% | — | — |
Max Drawdown (10Y)Largest decline over 10 years | -98.67% | — | — |
Current DrawdownCurrent decline from peak | -99.69% | -98.06% | -1.63% |
Average DrawdownAverage peak-to-trough decline | -88.14% | -89.03% | +0.89% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 38.82% | 58.08% | -19.26% |
Volatility
QMCO vs. ARQQ - Volatility Comparison
The current volatility for Quantum Corporation (QMCO) is 23.03%, while Arqit Quantum Inc. (ARQQ) has a volatility of 32.03%. This indicates that QMCO experiences smaller price fluctuations and is considered to be less risky than ARQQ based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| QMCO | ARQQ | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 23.03% | 32.03% | -9.00% |
Volatility (6M)Calculated over the trailing 6-month period | 74.53% | 84.47% | -9.94% |
Volatility (1Y)Calculated over the trailing 1-year period | 104.69% | 115.46% | -10.77% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 159.82% | 135.70% | +24.12% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 124.86% | 135.70% | -10.84% |
Dividends
QMCO vs. ARQQ - Dividend Comparison
Neither QMCO nor ARQQ has paid dividends to shareholders.
Financials
QMCO vs. ARQQ - Financials Comparison
This section allows you to compare key financial metrics between Quantum Corporation and Arqit Quantum Inc.. You can select fields from income statements, balance sheets, and cash flow statements to easily visualize and compare the financial health of both companies.
Total Revenue: Total amount of money received from sales and other business activities
Frequently Asked Questions
QMCO and ARQQ have a correlation of 0.57, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
ARQQ has higher volatility (32.03%) compared to QMCO (23.03%). In terms of maximum drawdown, QMCO dropped -99.93% vs ARQQ's -99.60%.
QMCO currently has the higher Sharpe Ratio (0.32 vs -0.37), 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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