QMCO vs. QSI

Last updated Jun 3, 2026

QMCO (Quantum Corporation) and QSI (Quantum-Si incorporated) are both stocks. QMCO operates in Computer Hardware (Technology), while QSI operates in Biotechnology (Healthcare). Over the past 3 years, QMCO returned -21.17%/yr vs -9.81%/yr for QSI. At a 0.33 correlation, their price movements are largely independent.

Performance

QMCO vs. QSI - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Quantum Corporation (QMCO) and Quantum-Si incorporated (QSI). 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 QSI's 12.73% 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%

QSI

• 1D: 5.08%
• 1M: 29.41%
• YTD: 12.73%
• 6M: -2.36%
• 1Y: -26.19%
• 3Y*: -9.81%
• 5Y*: —
• 10Y*: —

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

QMCO vs. QSI - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021
QMCO Quantum Corporation	94.42%	-88.04%	672.49%	-67.98%	-80.25%	-23.23%
QSI Quantum-Si incorporated	12.73%	-59.26%	34.33%	9.84%	-76.75%	-26.31%

Correlation

The correlation between QMCO and QSI is 0.51, 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	0.51
Correlation (3Y) Calculated over the trailing 3-year period	0.32
Correlation (All Time) Calculated using the full available price history since Jun 11, 2021	0.33

The correlation between QMCO and QSI shifts across timeframes, from 0.32 (3 years) to 0.51 (1 year), reflecting how their relationship changes across market environments.

Fundamentals

Market Cap QMCO : $171.66M QSI : $268.43M
EPS QMCO : -$8.86 QSI : -$0.51
PS Ratio QMCO : 0.55 QSI : 135.06
Total Revenue (TTM) QMCO : $261.28M QSI : $1.85M
Gross Profit (TTM) QMCO : $97.87M QSI : -$3.71M
EBITDA (TTM) QMCO : -$51.03M QSI : -$104.05M

Return for Risk

QMCO vs. QSI — 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

QSI

QSI Risk / Return Rank: 31
QSI Sharpe Ratio Rank: 28
QSI Sortino Ratio Rank: 34
QSI Omega Ratio Rank: 33
QSI Calmar Ratio Rank: 28
QSI Martin Ratio Rank: 30

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. QSI - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Quantum Corporation (QMCO) and Quantum-Si incorporated (QSI). 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	QSI	Difference
Sharpe ratio Return per unit of total volatility	0.07	-0.28	+0.35
Sortino ratio Return per unit of downside risk	0.90	0.20	+0.70
Omega ratio Gain probability vs. loss probability	1.10	1.02	+0.08
Calmar ratio Return relative to maximum drawdown	0.08	-0.36	+0.44
Martin ratio Return relative to average drawdown	0.14	-0.54	+0.68
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. QSI - Sharpe Ratio Comparison

The current QMCO Sharpe Ratio is 0.07, which is higher than the QSI Sharpe Ratio of -0.28. The chart below compares the historical Sharpe Ratios of QMCO and QSI, 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	QSI	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.07	-0.28	+0.35
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	-0.24	—	—
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	-0.28	+0.10

Drawdowns

QMCO vs. QSI - Drawdown Comparison

The maximum QMCO drawdown since its inception was -99.93%, roughly equal to the maximum QSI drawdown of -95.33%. Use the drawdown chart below to compare losses from any high point for QMCO and QSI.

Drawdown Indicators

	QMCO	QSI	Difference
Max Drawdown Largest peak-to-trough decline	-99.93%	-95.33%	-4.60%
Max Drawdown (1Y) Largest decline over 1 year	-67.72%	-72.95%	+5.23%
Max Drawdown (3Y) Largest decline over 3 years	-93.90%	-83.73%	-10.17%
Max Drawdown (5Y) Largest decline over 5 years	-98.41%	—	—
Max Drawdown (10Y) Largest decline over 10 years	-98.67%	—	—
Current Drawdown Current decline from peak	-99.63%	-90.86%	-8.77%
Average Drawdown Average peak-to-trough decline	-88.08%	-79.25%	-8.83%
Ulcer Index Depth and duration of drawdowns from previous peaks	40.44%	48.24%	-7.80%

Volatility

QMCO vs. QSI - Volatility Comparison

Quantum Corporation (QMCO) has a higher volatility of 36.66% compared to Quantum-Si incorporated (QSI) at 21.55%. This indicates that QMCO's price experiences larger fluctuations and is considered to be riskier than QSI based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	QMCO	QSI	Difference
Volatility (1M) Calculated over the trailing 1-month period	36.66%	21.55%	+15.11%
Volatility (6M) Calculated over the trailing 6-month period	67.36%	58.82%	+8.54%
Volatility (1Y) Calculated over the trailing 1-year period	100.36%	92.59%	+7.77%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	158.72%	125.45%	+33.27%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	124.58%	125.45%	-0.87%

Dividends

QMCO vs. QSI - Dividend Comparison

Neither QMCO nor QSI has paid dividends to shareholders.

Tickers have no history of dividend payments

Financials

Frequently Asked Questions

Can I hold both QMCO and QSI in my portfolio?

QMCO and QSI have a correlation of 0.51, 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 QSI?

QMCO has higher volatility (36.66%) compared to QSI (21.55%). In terms of maximum drawdown, QMCO dropped -99.93% vs QSI's -95.33%.

Which has better risk-adjusted returns?

QMCO currently has the higher Sharpe Ratio (0.07 vs -0.28), 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.