TDG vs. HEI

Last updated Apr 2, 2026

Compare and contrast key facts about TransDigm Group Incorporated (TDG) and HEICO Corporation (HEI).

Performance

TDG vs. HEI - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in TransDigm Group Incorporated (TDG) and HEICO Corporation (HEI). The values are adjusted to include any dividend payments, if applicable.

TDG vs. HEI - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
TDG TransDigm Group Incorporated	-11.77%	12.15%	32.27%	66.57%	1.77%	2.82%	10.51%	84.41%	23.83%	19.84%
HEI HEICO Corporation	-14.84%	36.22%	33.05%	16.56%	6.67%	9.06%	16.16%	47.54%	28.51%	53.04%

Fundamentals

Market Cap TDG : $68.28B HEI : $38.85B
EPS TDG : $34.85 HEI : $5.06
PE Ratio TDG : 33.67 HEI : 54.47
PEG Ratio TDG : 1.00 HEI : 2.45
PS Ratio TDG : 7.49 HEI : 8.38
Total Revenue (TTM) TDG : $9.11B HEI : $4.63B
Gross Profit (TTM) TDG : $5.43B HEI : $1.41B
EBITDA (TTM) TDG : $4.52B HEI : $1.21B

Returns By Period

In the year-to-date period, TDG achieves a -11.77% return, which is significantly higher than HEI's -14.84% return. Both investments have delivered pretty close results over the past 10 years, with TDG having a 23.83% annualized return and HEI not far ahead at 24.76%.

TDG

• 1D: 1.23%
• 1M: -10.86%
• YTD: -11.77%
• 6M: -9.80%
• 1Y: -10.27%
• 3Y*: 23.03%
• 5Y*: 18.52%
• 10Y*: 23.83%

HEI

• 1D: 0.47%
• 1M: -16.33%
• YTD: -14.84%
• 6M: -13.83%
• 1Y: 2.02%
• 3Y*: 17.33%
• 5Y*: 16.70%
• 10Y*: 24.76%

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

Return for Risk

TDG vs. HEI — Risk / Return Rank

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

TDG

TDG Risk / Return Rank: 25
TDG Sharpe Ratio Rank: 24
TDG Sortino Ratio Rank: 22
TDG Omega Ratio Rank: 22
TDG Calmar Ratio Rank: 29
TDG Martin Ratio Rank: 28

HEI

HEI Risk / Return Rank: 41
HEI Sharpe Ratio Rank: 43
HEI Sortino Ratio Rank: 36
HEI Omega Ratio Rank: 36
HEI Calmar Ratio Rank: 44
HEI Martin Ratio Rank: 45

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.

TDG vs. HEI - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for TransDigm Group Incorporated (TDG) and HEICO Corporation (HEI). 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.

	TDG	HEI	Difference
Sharpe ratio Return per unit of total volatility	-0.37	0.07	-0.43
Sortino ratio Return per unit of downside risk	-0.29	0.30	-0.60
Omega ratio Gain probability vs. loss probability	0.95	1.04	-0.09
Calmar ratio Return relative to maximum drawdown	-0.37	0.12	-0.49
Martin ratio Return relative to average drawdown	-0.79	0.39	-1.19
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

TDG vs. HEI - Sharpe Ratio Comparison

The current TDG Sharpe Ratio is -0.37, which is lower than the HEI Sharpe Ratio of 0.07. The chart below compares the historical Sharpe Ratios of TDG and HEI, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	TDG	HEI	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	-0.37	0.07	-0.43
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.68	0.63	+0.05
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.71	0.83	-0.12
Sharpe Ratio (All Time) Calculated using the full available price history	0.85	0.50	+0.35

Correlation

The correlation between TDG and HEI is 0.52, which is considered to be moderate. This suggests that the two assets have some degree of positive relationship in their price movements. Moderate correlation can be acceptable for portfolio diversification, offering a balance between risk and potential returns.

Dividends

TDG vs. HEI - Dividend Comparison

TDG's dividend yield for the trailing twelve months is around 7.67%, more than HEI's 0.09% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
TDG TransDigm Group Incorporated	7.67%	6.77%	5.92%	3.46%	2.94%	0.00%	0.00%	11.16%	0.00%	8.01%	9.64%	0.00%
HEI HEICO Corporation	0.09%	0.07%	0.09%	0.11%	0.12%	0.12%	0.12%	0.12%	0.14%	0.08%	0.22%	0.28%

Drawdowns

TDG vs. HEI - Drawdown Comparison

The maximum TDG drawdown since its inception was -62.64%, smaller than the maximum HEI drawdown of -75.50%. Use the drawdown chart below to compare losses from any high point for TDG and HEI.

Drawdown Indicators

	TDG	HEI	Difference
Max Drawdown Largest peak-to-trough decline	-62.64%	-75.50%	+12.86%
Max Drawdown (1Y) Largest decline over 1 year	-25.30%	-25.98%	+0.68%
Max Drawdown (5Y) Largest decline over 5 years	-25.30%	-25.98%	+0.68%
Max Drawdown (10Y) Largest decline over 10 years	-62.64%	-57.73%	-4.91%
Current Drawdown Current decline from peak	-22.64%	-23.06%	+0.42%
Average Drawdown Average peak-to-trough decline	-7.83%	-19.97%	+12.14%
Ulcer Index Depth and duration of drawdowns from previous peaks	11.81%	8.07%	+3.74%

Volatility

TDG vs. HEI - Volatility Comparison

The current volatility for TransDigm Group Incorporated (TDG) is 6.32%, while HEICO Corporation (HEI) has a volatility of 10.02%. This indicates that TDG experiences smaller price fluctuations and is considered to be less risky than HEI based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	TDG	HEI	Difference
Volatility (1M) Calculated over the trailing 1-month period	6.32%	10.02%	-3.70%
Volatility (6M) Calculated over the trailing 6-month period	18.01%	21.09%	-3.08%
Volatility (1Y) Calculated over the trailing 1-year period	28.22%	30.34%	-2.12%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	27.39%	26.56%	+0.83%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	33.68%	30.09%	+3.59%

Financials

TDG vs. HEI - Profitability Comparison

The chart below illustrates the profitability comparison between TransDigm Group Incorporated and HEICO Corporation over time, highlighting three key metrics: Gross Profit Margin, Operating Margin, and Net Profit Margin.

TDG - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Apr 2026, TransDigm Group Incorporated reported a gross profit of 1.35B and revenue of 2.29B. Therefore, the gross margin over that period was 59.2%.

HEI - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Apr 2026, HEICO Corporation reported a gross profit of 0.00 and revenue of 1.18B. Therefore, the gross margin over that period was 0.0%.

TDG - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Apr 2026, TransDigm Group Incorporated reported an operating income of 1.04B and revenue of 2.29B, resulting in an operating margin of 45.6%.

HEI - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Apr 2026, HEICO Corporation reported an operating income of 259.90M and revenue of 1.18B, resulting in an operating margin of 22.1%.

TDG - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Apr 2026, TransDigm Group Incorporated reported a net income of 445.00M and revenue of 2.29B, resulting in a net margin of 19.5%.

HEI - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Apr 2026, HEICO Corporation reported a net income of 190.19M and revenue of 1.18B, resulting in a net margin of 16.1%.