CMTL vs. IDT

Last updated Jun 9, 2026

CMTL (Comtech Telecommunications Corp.) and IDT (IDT Corporation) are both stocks. CMTL operates in Communication Equipment (Technology), while IDT operates in Telecom Services (Communication Services). Over the past 10 years, CMTL returned -12.29%/yr vs 18.43%/yr for IDT. At a 0.24 correlation, their price movements are largely independent.

Performance

CMTL vs. IDT - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Comtech Telecommunications Corp. (CMTL) and IDT Corporation (IDT). 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 IDT's 7.74% return. Over the past 10 years, CMTL has underperformed IDT with an annualized return of -12.29%, while IDT has yielded a comparatively higher 18.43% 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%

IDT

• 1D: -1.77%
• 1M: 2.91%
• YTD: 7.74%
• 6M: 15.07%
• 1Y: -19.36%
• 3Y*: 26.67%
• 5Y*: 6.31%
• 10Y*: 18.43%

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

CMTL vs. IDT - 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%
IDT IDT Corporation	7.74%	8.22%	40.09%	21.02%	-36.21%	257.28%	71.43%	16.48%	-29.46%	-38.46%

Correlation

The correlation between CMTL and IDT is 0.14, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.14
Correlation (3Y) Calculated over the trailing 3-year period	0.17
Correlation (5Y) Calculated over the trailing 5-year period	0.22
Correlation (10Y) Calculated over the trailing 10-year period	0.25
Correlation (All Time) Calculated using the full available price history since May 16, 2001	0.24

The correlation between CMTL and IDT shifts across timeframes, from 0.14 (1 year) to 0.25 (10 years), reflecting how their relationship changes across market environments.

Fundamentals

Market Cap CMTL : $134.06M IDT : $1.37B
EPS CMTL : -$680.48K IDT : $3.26
PS Ratio CMTL : 0.00 IDT : 1.09
Total Revenue (TTM) CMTL : $106.76T IDT : $1.28B
Gross Profit (TTM) CMTL : $36.22T IDT : $476.45M
EBITDA (TTM) CMTL : $4.11T IDT : $130.53M

Return for Risk

CMTL vs. IDT — 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

IDT

IDT Risk / Return Rank: 20
IDT Sharpe Ratio Rank: 15
IDT Sortino Ratio Rank: 18
IDT Omega Ratio Rank: 16
IDT Calmar Ratio Rank: 21
IDT Martin Ratio Rank: 27

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. IDT - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Comtech Telecommunications Corp. (CMTL) and IDT Corporation (IDT). 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	IDT	Difference
Sharpe ratio: Return per unit of total volatility	1.16	-0.61	+1.77
Sortino ratio: Return per unit of downside risk	1.87	-0.62	+2.48
Omega ratio: Gain probability vs. loss probability	1.24	0.91	+0.33
Calmar ratio: Return relative to maximum drawdown	1.98	-0.59	+2.57
Martin ratio: Return relative to average drawdown	4.63	-0.82	+5.45
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. IDT - Sharpe Ratio Comparison

The current CMTL Sharpe Ratio is 1.16, which is higher than the IDT Sharpe Ratio of -0.61. The chart below compares the historical Sharpe Ratios of CMTL and IDT, 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	IDT	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.16	-0.61	+1.77
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	-0.30	0.15	-0.45
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	-0.17	0.34	-0.51
Sharpe Ratio (All Time) Calculated using the full available price history	0.07	0.13	-0.06

Drawdowns

CMTL vs. IDT - Drawdown Comparison

The maximum CMTL drawdown since its inception was -96.69%, roughly equal to the maximum IDT drawdown of -99.05%. Use the drawdown chart below to compare losses from any high point for CMTL and IDT.

Drawdown Indicators

	CMTL	IDT	Difference
Max Drawdown Largest peak-to-trough decline	-96.69%	-99.05%	+2.36%
Max Drawdown (1Y) Largest decline over 1 year	-49.67%	-33.19%	-16.48%
Max Drawdown (3Y) Largest decline over 3 years	-90.21%	-33.19%	-57.02%
Max Drawdown (5Y) Largest decline over 5 years	-95.27%	-66.93%	-28.34%
Max Drawdown (10Y) Largest decline over 10 years	-96.42%	-72.52%	-23.90%
Current Drawdown Current decline from peak	-88.08%	-20.88%	-67.20%
Average Drawdown Average peak-to-trough decline	-47.43%	-50.34%	+2.91%
Ulcer Index Depth and duration of drawdowns from previous peaks	21.23%	23.78%	-2.55%

Volatility

CMTL vs. IDT - Volatility Comparison

Comtech Telecommunications Corp. (CMTL) has a higher volatility of 29.59% compared to IDT Corporation (IDT) at 7.57%. This indicates that CMTL's price experiences larger fluctuations and is considered to be riskier than IDT based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	CMTL	IDT	Difference
Volatility (1M) Calculated over the trailing 1-month period	29.59%	7.57%	+22.02%
Volatility (6M) Calculated over the trailing 6-month period	66.19%	17.42%	+48.77%
Volatility (1Y) Calculated over the trailing 1-year period	85.50%	31.79%	+53.71%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	90.33%	42.59%	+47.74%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	73.87%	54.61%	+19.26%

Dividends

CMTL vs. IDT - Dividend Comparison

CMTL has not paid dividends to shareholders, while IDT's dividend yield for the trailing twelve months is around 0.45%.

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%
IDT IDT Corporation	0.45%	0.47%	0.42%	0.00%	0.00%	0.00%	0.00%	0.00%	2.68%	8.96%	3.93%	11.75%

Financials

CMTL vs. IDT - Profitability Comparison

The chart below illustrates the profitability comparison between Comtech Telecommunications Corp. and IDT Corporation 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%.

IDT - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, IDT Corporation reported a gross profit of 122.50M and revenue of 315.71M. Therefore, the gross margin over that period was 38.8%.

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%.

IDT - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, IDT Corporation reported an operating income of 29.90M and revenue of 315.71M, resulting in an operating margin of 9.5%.

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%.

IDT - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, IDT Corporation reported a net income of 21.61M and revenue of 315.71M, resulting in a net margin of 6.9%.

Frequently Asked Questions

Can I hold both CMTL and IDT in my portfolio?

CMTL and IDT have a correlation of 0.14, 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 IDT?

CMTL has higher volatility (29.59%) compared to IDT (7.57%). In terms of maximum drawdown, CMTL dropped -96.69% vs IDT's -99.05%.

Which has better risk-adjusted returns?

CMTL currently has the higher Sharpe Ratio (1.16 vs -0.61), 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.