QMCO vs. IONQ

Last updated Jun 3, 2026

QMCO (Quantum Corporation) and IONQ (IonQ, Inc.) are both stocks. Both operate in the Computer Hardware industry within the Technology sector. Over the past 5 years, QMCO returned -38.42%/yr vs 48.02%/yr for IONQ. At a 0.37 correlation, their price movements are largely independent.

Performance

QMCO vs. IONQ - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Quantum Corporation (QMCO) and IonQ, Inc. (IONQ). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, QMCO achieves a 94.42% return, which is significantly higher than IONQ's 59.13% return.

QMCO

• 1D: 19.54%
• 1M: 66.76%
• YTD: 94.42%
• 6M: 62.44%
• 1Y: 6.81%
• 3Y*: -21.17%
• 5Y*: -38.42%
• 10Y*: -15.74%

IONQ

• 1D: 3.06%
• 1M: 54.55%
• YTD: 59.13%
• 6M: 52.14%
• 1Y: 75.99%
• 3Y*: 97.84%
• 5Y*: 48.02%
• 10Y*: —

*Multi-year figures are annualized to reflect compound growth (CAGR)

QMCO vs. IONQ - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021
QMCO Quantum Corporation	94.42%	-88.04%	672.49%	-67.98%	-80.25%	-13.21%
IONQ IonQ, Inc.	59.13%	7.42%	237.13%	259.13%	-79.34%	54.63%

Correlation

The correlation between QMCO and IONQ is 0.54, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.54
Correlation (3Y) Calculated over the trailing 3-year period	0.42
Correlation (5Y) Calculated over the trailing 5-year period	0.38
Correlation (All Time) Calculated using the full available price history since Jan 5, 2021	0.37

The correlation between QMCO and IONQ shifts across timeframes, from 0.37 (all time) to 0.54 (1 year), reflecting how their relationship changes across market environments.

Fundamentals

Market Cap QMCO : $171.66M IONQ : $26.51B
EPS QMCO : -$8.86 IONQ : $0.86
PS Ratio QMCO : 0.55 IONQ : 122.65
Total Revenue (TTM) QMCO : $261.28M IONQ : $187.12M
Gross Profit (TTM) QMCO : $97.87M IONQ : $71.25M
EBITDA (TTM) QMCO : -$51.03M IONQ : $405.86M

Return for Risk

QMCO vs. IONQ — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.

QMCO

QMCO Risk / Return Rank: 45
QMCO Sharpe Ratio Rank: 42
QMCO Sortino Ratio Rank: 51
QMCO Omega Ratio Rank: 48
QMCO Calmar Ratio Rank: 42
QMCO Martin Ratio Rank: 41

IONQ

IONQ Risk / Return Rank: 65
IONQ Sharpe Ratio Rank: 67
IONQ Sortino Ratio Rank: 70
IONQ Omega Ratio Rank: 64
IONQ Calmar Ratio Rank: 63
IONQ Martin Ratio Rank: 60

The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

QMCO vs. IONQ - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Quantum Corporation (QMCO) and IonQ, Inc. (IONQ). 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.

	QMCO	IONQ	Difference
Sharpe ratio Return per unit of total volatility	0.07	0.84	-0.77
Sortino ratio Return per unit of downside risk	0.90	1.75	-0.86
Omega ratio Gain probability vs. loss probability	1.10	1.19	-0.09
Calmar ratio Return relative to maximum drawdown	0.08	1.14	-1.06
Martin ratio Return relative to average drawdown	0.14	2.09	-1.95
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

QMCO vs. IONQ - Sharpe Ratio Comparison

The current QMCO Sharpe Ratio is 0.07, which is lower than the IONQ Sharpe Ratio of 0.84. The chart below compares the historical Sharpe Ratios of QMCO and IONQ, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	QMCO	IONQ	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.07	0.84	-0.77
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	-0.24	0.48	-0.73
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	-0.13	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	-0.18	0.43	-0.61

Drawdowns

QMCO vs. IONQ - Drawdown Comparison

The maximum QMCO drawdown since its inception was -99.93%, which is greater than IONQ's maximum drawdown of -90.00%. Use the drawdown chart below to compare losses from any high point for QMCO and IONQ.

Drawdown Indicators

	QMCO	IONQ	Difference
Max Drawdown Largest peak-to-trough decline	-99.93%	-90.00%	-9.93%
Max Drawdown (1Y) Largest decline over 1 year	-67.72%	-67.61%	-0.11%
Max Drawdown (3Y) Largest decline over 3 years	-93.90%	-67.61%	-26.29%
Max Drawdown (5Y) Largest decline over 5 years	-98.41%	-90.00%	-8.41%
Max Drawdown (10Y) Largest decline over 10 years	-98.67%	—	—
Current Drawdown Current decline from peak	-99.63%	-13.02%	-86.61%
Average Drawdown Average peak-to-trough decline	-88.08%	-51.06%	-37.02%
Ulcer Index Depth and duration of drawdowns from previous peaks	40.44%	36.90%	+3.54%

Volatility

QMCO vs. IONQ - Volatility Comparison

Quantum Corporation (QMCO) has a higher volatility of 36.66% compared to IonQ, Inc. (IONQ) at 29.50%. This indicates that QMCO's price experiences larger fluctuations and is considered to be riskier than IONQ based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	QMCO	IONQ	Difference
Volatility (1M) Calculated over the trailing 1-month period	36.66%	29.50%	+7.16%
Volatility (6M) Calculated over the trailing 6-month period	67.36%	67.00%	+0.36%
Volatility (1Y) Calculated over the trailing 1-year period	100.36%	91.47%	+8.89%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	158.72%	100.08%	+58.64%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	124.58%	97.42%	+27.16%

Dividends

QMCO vs. IONQ - Dividend Comparison

Neither QMCO nor IONQ has paid dividends to shareholders.

Tickers have no history of dividend payments

Financials

Frequently Asked Questions

Can I hold both QMCO and IONQ in my portfolio?

QMCO and IONQ have a correlation of 0.54, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, QMCO or IONQ?

QMCO has higher volatility (36.66%) compared to IONQ (29.50%). In terms of maximum drawdown, QMCO dropped -99.93% vs IONQ's -90.00%.

Which has better risk-adjusted returns?

IONQ currently has the higher Sharpe Ratio (0.84 vs 0.07), 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.