CMTL vs. KMX

Last updated Jun 9, 2026

CMTL (Comtech Telecommunications Corp.) and KMX (CarMax, Inc.) are both stocks. CMTL operates in Communication Equipment (Technology), while KMX operates in Auto & Truck Dealerships (Consumer Cyclical). Over the past 10 years, CMTL returned -12.29%/yr vs -0.36%/yr for KMX. At a 0.23 correlation, their price movements are largely independent.

Performance

CMTL vs. KMX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Comtech Telecommunications Corp. (CMTL) and CarMax, Inc. (KMX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, CMTL achieves a -15.03% return, which is significantly lower than KMX's 22.93% return. Over the past 10 years, CMTL has underperformed KMX with an annualized return of -12.29%, while KMX has yielded a comparatively higher -0.36% annualized return.

CMTL

• 1D: -4.77%
• 1M: 14.38%
• YTD: -15.03%
• 6M: 36.63%
• 1Y: 98.02%
• 3Y*: -21.75%
• 5Y*: -26.59%
• 10Y*: -12.29%

KMX

• 1D: 0.74%
• 1M: 17.75%
• YTD: 22.93%
• 6M: 20.99%
• 1Y: -27.71%
• 3Y*: -15.53%
• 5Y*: -16.21%
• 10Y*: -0.36%

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

CMTL vs. KMX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
CMTL Comtech Telecommunications Corp.	-15.03%	31.92%	-52.43%	-30.04%	-47.10%	16.52%	-40.46%	48.02%	11.56%	91.66%
KMX CarMax, Inc.	22.93%	-52.74%	6.54%	26.03%	-53.24%	37.87%	7.74%	39.76%	-2.18%	-0.40%

Correlation

The correlation between CMTL and KMX is 0.25, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.25
Correlation (3Y) Calculated over the trailing 3-year period	0.21
Correlation (5Y) Calculated over the trailing 5-year period	0.26
Correlation (10Y) Calculated over the trailing 10-year period	0.29
Correlation (All Time) Calculated using the full available price history since Feb 5, 1997	0.23

Fundamentals

Market Cap CMTL : $134.06M KMX : $7.01B
EPS CMTL : -$680.48K KMX : $1.66
PS Ratio CMTL : 0.00 KMX : 0.27
Total Revenue (TTM) CMTL : $106.76T KMX : $25.88B
Gross Profit (TTM) CMTL : $36.22T KMX : $2.81B
EBITDA (TTM) CMTL : $4.11T KMX : $768.58M

Return for Risk

CMTL vs. KMX — Risk / Return Rank

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

CMTL

CMTL Risk / Return Rank: 75
CMTL Sharpe Ratio Rank: 76
CMTL Sortino Ratio Rank: 74
CMTL Omega Ratio Rank: 73
CMTL Calmar Ratio Rank: 75
CMTL Martin Ratio Rank: 76

KMX

KMX Risk / Return Rank: 23
KMX Sharpe Ratio Rank: 19
KMX Sortino Ratio Rank: 22
KMX Omega Ratio Rank: 21
KMX Calmar Ratio Rank: 25
KMX Martin Ratio Rank: 28

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.

CMTL vs. KMX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Comtech Telecommunications Corp. (CMTL) and CarMax, Inc. (KMX). 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.

	CMTL	KMX	Difference
Sharpe ratio: Return per unit of total volatility	1.16	-0.53	+1.68
Sortino ratio: Return per unit of downside risk	1.87	-0.41	+2.27
Omega ratio: Gain probability vs. loss probability	1.24	0.94	+0.30
Calmar ratio: Return relative to maximum drawdown	1.98	-0.49	+2.47
Martin ratio: Return relative to average drawdown	4.63	-0.77	+5.40
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

CMTL vs. KMX - Sharpe Ratio Comparison

The current CMTL Sharpe Ratio is 1.16, which is higher than the KMX Sharpe Ratio of -0.53. The chart below compares the historical Sharpe Ratios of CMTL and KMX, 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

	CMTL	KMX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.16	-0.53	+1.68
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	-0.30	-0.37	+0.07
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	-0.17	-0.01	-0.16
Sharpe Ratio (All Time) Calculated using the full available price history	0.07	0.11	-0.04

Drawdowns

CMTL vs. KMX - Drawdown Comparison

The maximum CMTL drawdown since its inception was -96.69%, roughly equal to the maximum KMX drawdown of -93.19%. Use the drawdown chart below to compare losses from any high point for CMTL and KMX.

Drawdown Indicators

	CMTL	KMX	Difference
Max Drawdown Largest peak-to-trough decline	-96.69%	-93.19%	-3.50%
Max Drawdown (1Y) Largest decline over 1 year	-49.67%	-56.85%	+7.18%
Max Drawdown (3Y) Largest decline over 3 years	-90.21%	-65.38%	-24.83%
Max Drawdown (5Y) Largest decline over 5 years	-95.27%	-80.06%	-15.21%
Max Drawdown (10Y) Largest decline over 10 years	-96.42%	-80.06%	-16.36%
Current Drawdown Current decline from peak	-88.08%	-69.33%	-18.75%
Average Drawdown Average peak-to-trough decline	-47.43%	-31.74%	-15.69%
Ulcer Index Depth and duration of drawdowns from previous peaks	21.23%	36.04%	-14.81%

Volatility

CMTL vs. KMX - Volatility Comparison

Comtech Telecommunications Corp. (CMTL) has a higher volatility of 29.59% compared to CarMax, Inc. (KMX) at 11.99%. This indicates that CMTL's price experiences larger fluctuations and is considered to be riskier than KMX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	CMTL	KMX	Difference
Volatility (1M) Calculated over the trailing 1-month period	29.59%	11.99%	+17.60%
Volatility (6M) Calculated over the trailing 6-month period	66.19%	34.46%	+31.73%
Volatility (1Y) Calculated over the trailing 1-year period	85.50%	52.71%	+32.79%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	90.33%	44.23%	+46.10%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	73.87%	40.53%	+33.34%

Dividends

CMTL vs. KMX - Dividend Comparison

Neither CMTL nor KMX has paid dividends to shareholders.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
CMTL Comtech Telecommunications Corp.	0.00%	0.00%	0.00%	1.19%	3.29%	1.69%	1.93%	1.13%	1.64%	1.81%	10.13%	5.97%
KMX CarMax, 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%

Financials

CMTL vs. KMX - Profitability Comparison

The chart below illustrates the profitability comparison between Comtech Telecommunications Corp. and CarMax, Inc. over time, highlighting three key metrics: Gross Profit Margin, Operating Margin, and Net Profit Margin.

CMTL - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, Comtech Telecommunications Corp. reported a gross profit of 36.22T and revenue of 106.76T. Therefore, the gross margin over that period was 33.9%.

KMX - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, CarMax, Inc. reported a gross profit of 420.20M and revenue of 4.52B. Therefore, the gross margin over that period was 9.3%.

CMTL - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, Comtech Telecommunications Corp. reported an operating income of 4.11T and revenue of 106.76T, resulting in an operating margin of 3.9%.

KMX - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, CarMax, Inc. reported an operating income of -339.44M and revenue of 4.52B, resulting in an operating margin of -7.5%.

CMTL - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, Comtech Telecommunications Corp. reported a net income of -20.16T and revenue of 106.76T, resulting in a net margin of -18.9%.

KMX - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, CarMax, Inc. reported a net income of -120.68M and revenue of 4.52B, resulting in a net margin of -2.7%.

Frequently Asked Questions

Can I hold both CMTL and KMX in my portfolio?

CMTL and KMX have a correlation of 0.25, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, CMTL or KMX?

CMTL has higher volatility (29.59%) compared to KMX (11.99%). In terms of maximum drawdown, CMTL dropped -96.69% vs KMX's -93.19%.

Which has better risk-adjusted returns?

CMTL currently has the higher Sharpe Ratio (1.16 vs -0.53), 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.