QMCO vs. QSI

Last updated Aug 1, 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 5 years, QMCO returned -38.81%/yr vs -40.33%/yr for QSI. Their 0.33 correlation means their historical movements had little consistent relationship.

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 64.96% return, which is significantly higher than QSI's -35.24% 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%

QSI

• 1D: -1.06%
• 1M: -23.43%
• 6M: -36.96%
• YTD: -35.24%
• 1Y: -51.21%
• 3Y*: -42.31%
• 5Y*: -40.33%
• 10Y*: —
• ALL TIME*: -40.81%

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

Liquidity Comparison

Position	Avg. Volume Value (2W)	Avg. Volume Value (1M)	Avg. Volume Value (3M)
QMCO Quantum Corporation	$10.63M	$9.59M	$13.73M
QSI Quantum-Si incorporated	$1.94M	$2.39M	$5.15M

QMCO vs. QSI - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021
QMCO Quantum Corporation	64.96%	-88.04%	672.49%	-67.98%	-80.25%	-22.36%
QSI Quantum-Si incorporated	-35.24%	-59.26%	34.33%	9.84%	-76.75%	-25.40%

Correlation

The correlation between QMCO and QSI is 0.49, which is low. Their historical price movements had little consistent relationship.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.49
Correlation (3Y) Balances recent behavior with more history.	0.33
Correlation (5Y) Shows whether the relationship held over a longer period.	0.33
Correlation (All Time) Calculated using the full available price history since Jun 10, 2021	0.33

The correlation between QMCO and QSI shifts across timeframes, from 0.33 (all time) to 0.49 (1 year), reflecting how their relationship changes across market environments.

Fundamentals

Market Cap QMCO : $66.49M QSI : $140.93M
EPS QMCO : -$7.68 QSI : -$0.50
PS Ratio QMCO : 0.50 QSI : 79.92
Total Revenue (TTM) QMCO : $279.58M QSI : $1.85M
Gross Profit (TTM) QMCO : $103.04M QSI : -$3.71M
EBITDA (TTM) QMCO : -$67.70M QSI : -$104.05M

Return for Risk

QMCO vs. QSI — Risk / Return Rank

Compare historical risk-adjusted metric ranks over the past 12 months.

QMCO

QMCO Risk / Return Rank: 60
QMCO Sharpe Ratio Rank: 57
QMCO Sortino Ratio Rank: 66
QMCO Omega Ratio Rank: 62
QMCO Calmar Ratio Rank: 57
QMCO Martin Ratio Rank: 56

QSI

QSI Risk / Return Rank: 20
QSI Sharpe Ratio Rank: 18
QSI Sortino Ratio Rank: 19
QSI Omega Ratio Rank: 21
QSI Calmar Ratio Rank: 17
QSI Martin Ratio Rank: 23

The rank (0–100) uses a weighted average of the Sharpe, Sortino, Omega, Calmar, and Martin percentile ranks for the trailing 12 months. Higher means stronger historical risk-adjusted performance within the peer group.

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.

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	QSI	Difference
Sharpe ratio: Return per unit of total volatility	0.32	-0.57	+0.89
Sortino ratio: Return per unit of downside risk	1.28	-0.61	+1.89
Omega ratio: Gain probability vs. loss probability	1.15	0.94	+0.21
Calmar ratio: Return relative to maximum drawdown	0.49	-0.71	+1.20
Martin ratio: Return relative to average drawdown	0.85	-0.99	+1.84

QMCO vs. QSI - Sharpe Ratio Comparison

The current QMCO Sharpe Ratio is 0.32, which is higher than the QSI Sharpe Ratio of -0.57. 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.

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%	-73.30%	+5.58%
Max Drawdown (3Y) Largest decline over 3 years	-93.90%	-83.63%	-10.27%
Max Drawdown (5Y) Largest decline over 5 years	-98.26%	-93.61%	-4.65%
Max Drawdown (10Y) Largest decline over 10 years	-98.67%	—	—
Current Drawdown Current decline from peak	-99.69%	-94.75%	-4.94%
Average Drawdown Average peak-to-trough decline	-88.14%	-79.63%	-8.51%
Ulcer Index Depth and duration of drawdowns from previous peaks	38.82%	52.58%	-13.76%

Volatility

QMCO vs. QSI - Volatility Comparison

Quantum Corporation (QMCO) has a higher volatility of 23.03% compared to Quantum-Si incorporated (QSI) at 15.64%. 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	23.03%	15.64%	+7.39%
Volatility (6M) Calculated over the trailing 6-month period	74.53%	61.10%	+13.43%
Volatility (1Y) Calculated over the trailing 1-year period	104.69%	91.12%	+13.57%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	159.82%	124.83%	+34.99%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	124.86%	124.16%	+0.70%

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 0.49, 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 (23.03%) compared to QSI (15.64%). 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 (0.32 vs -0.57), 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.