HEI
Price
$310.49
Change
-$4.77 (-1.51%)
Updated
Dec 12 closing price
Capitalization
37.47B
5 days until earnings call
Intraday BUY SELL Signals
TDG
Price
$1294.65
Change
-$22.84 (-1.73%)
Updated
Dec 12 closing price
Capitalization
72.91B
59 days until earnings call
Intraday BUY SELL Signals
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HEI vs TDG

Header iconHEI vs TDG Comparison
Open Charts HEI vs TDGBanner chart's image
HEI
Price$310.49
Change-$4.77 (-1.51%)
Volume$402.75K
Capitalization37.47B
TransDigm Group
Price$1294.65
Change-$22.84 (-1.73%)
Volume$432.23K
Capitalization72.91B
HEI vs TDG Comparison Chart in %
HEI
Daily Signal:
Gain/Loss:
TDG
Daily Signal:
Gain/Loss:
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VS
HEI vs. TDG commentary
Dec 13, 2025

To compare these two companies we present long-term analysis, their fundamental ratings and make comparative short-term technical analysis which are presented below. The conclusion is HEI is a StrongBuy and TDG is a Buy.

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COMPARISON
Comparison
Dec 13, 2025
Stock price -- (HEI: $315.26 vs. TDG: $1317.49)
Brand notoriety: HEI and TDG are both not notable
Both companies represent the Aerospace & Defense industry
Current volume relative to the 65-day Moving Average: HEI: 154% vs. TDG: 100%
Market capitalization -- HEI: $37.47B vs. TDG: $72.91B
HEI [@Aerospace & Defense] is valued at $37.47B. TDG’s [@Aerospace & Defense] market capitalization is $72.91B. The market cap for tickers in the [@Aerospace & Defense] industry ranges from $316.24B to $0. The average market capitalization across the [@Aerospace & Defense] industry is $22.49B.

Long-Term Analysis

It is best to consider a long-term outlook for a ticker by using Fundamental Analysis (FA) ratings. The rating of 1 to 100, where 1 is best and 100 is worst, is divided into thirds. The first third (a green rating of 1-33) indicates that the ticker is undervalued; the second third (a grey number between 34 and 66) means that the ticker is valued fairly; and the last third (red number of 67 to 100) reflects that the ticker is undervalued. We use an FA Score to show how many ratings show the ticker to be undervalued (green) or overvalued (red).

HEI’s FA Score shows that 1 FA rating(s) are green whileTDG’s FA Score has 2 green FA rating(s).

  • HEI’s FA Score: 1 green, 4 red.
  • TDG’s FA Score: 2 green, 3 red.
According to our system of comparison, TDG is a better buy in the long-term than HEI.

Short-Term Analysis

It is best to consider a short-term outlook for a ticker by using Technical Analysis (TA) indicators. We use Odds of Success as the percentage of outcomes which confirm successful trade signals in the past.

If the Odds of Success (the likelihood of the continuation of a trend) for each indicator are greater than 50%, then the generated signal is confirmed. A green percentage from 90% to 51% indicates that the ticker is in a bullish trend. A red percentage from 90% - 51% indicates that the ticker is in a bearish trend. All grey percentages are below 50% and are considered not to confirm the trend signal.

HEI’s TA Score shows that 5 TA indicator(s) are bullish while TDG’s TA Score has 6 bullish TA indicator(s).

  • HEI’s TA Score: 5 bullish, 5 bearish.
  • TDG’s TA Score: 6 bullish, 3 bearish.
According to our system of comparison, TDG is a better buy in the short-term than HEI.

Price Growth

HEI (@Aerospace & Defense) experienced а -0.12% price change this week, while TDG (@Aerospace & Defense) price change was -3.13% for the same time period.

The average weekly price growth across all stocks in the @Aerospace & Defense industry was +3.23%. For the same industry, the average monthly price growth was +6.11%, and the average quarterly price growth was +19.07%.

Reported Earning Dates

HEI is expected to report earnings on Dec 18, 2025.

TDG is expected to report earnings on Feb 10, 2026.

Industries' Descriptions

@Aerospace & Defense (+3.23% weekly)

Aerospace & Defense is one of largest industries in the U.S., mainly comprising the following areas: commercial airliners, military aircraft, missiles, space, and general aviation. Focused heavily on research & development, it is also one of the fastest growing industries. Military aircraft has the largest market share in the industry’s sales, followed by space systems, civil aircraft, and missiles. Aerospace exports, directly and indirectly, support more jobs than the export of any other commodity, according to a study by the U.S. Department of Commerce. Boeing Company, Lockheed Martin Corporation and General Electric Company are some of the most prominent players in this space.

SUMMARIES
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FUNDAMENTALS
Fundamentals
TDG($72.9B) has a higher market cap than HEI($37.5B). HEI has higher P/E ratio than TDG: HEI (67.94) vs TDG (40.36). HEI YTD gains are higher at: 32.717 vs. TDG (11.111). TDG has higher annual earnings (EBITDA): 4.57B vs. HEI (1.15B). TDG has more cash in the bank: 2.81B vs. HEI (262M). HEI has less debt than TDG: HEI (2.45B) vs TDG (30B). TDG has higher revenues than HEI: TDG (8.83B) vs HEI (4.29B).
HEITDGHEI / TDG
Capitalization37.5B72.9B51%
EBITDA1.15B4.57B25%
Gain YTD32.71711.111294%
P/E Ratio67.9440.36168%
Revenue4.29B8.83B49%
Total Cash262M2.81B9%
Total Debt2.45B30B8%
FUNDAMENTALS RATINGS
HEI vs TDG: Fundamental Ratings
HEI
TDG
OUTLOOK RATING
1..100
977
VALUATION
overvalued / fair valued / undervalued
1..100
83
Overvalued
67
Overvalued
PROFIT vs RISK RATING
1..100
1011
SMR RATING
1..100
5116
PRICE GROWTH RATING
1..100
5854
P/E GROWTH RATING
1..100
5766
SEASONALITY SCORE
1..100
2550

Tickeron ratings are formulated such that a rating of 1 designates the most successful stocks in a given industry, while a rating of 100 points to the least successful stocks for that industry.

TDG's Valuation (67) in the Aerospace And Defense industry is in the same range as HEI (83). This means that TDG’s stock grew similarly to HEI’s over the last 12 months.

HEI's Profit vs Risk Rating (10) in the Aerospace And Defense industry is in the same range as TDG (11). This means that HEI’s stock grew similarly to TDG’s over the last 12 months.

TDG's SMR Rating (16) in the Aerospace And Defense industry is somewhat better than the same rating for HEI (51). This means that TDG’s stock grew somewhat faster than HEI’s over the last 12 months.

TDG's Price Growth Rating (54) in the Aerospace And Defense industry is in the same range as HEI (58). This means that TDG’s stock grew similarly to HEI’s over the last 12 months.

HEI's P/E Growth Rating (57) in the Aerospace And Defense industry is in the same range as TDG (66). This means that HEI’s stock grew similarly to TDG’s over the last 12 months.

TECHNICAL ANALYSIS
Technical Analysis
HEITDG
RSI
ODDS (%)
Bearish Trend 3 days ago
52%
N/A
Stochastic
ODDS (%)
Bearish Trend 3 days ago
54%
Bullish Trend 3 days ago
75%
Momentum
ODDS (%)
Bullish Trend 3 days ago
60%
Bearish Trend 3 days ago
49%
MACD
ODDS (%)
Bullish Trend 3 days ago
69%
Bearish Trend 3 days ago
50%
TrendWeek
ODDS (%)
Bearish Trend 3 days ago
55%
Bearish Trend 3 days ago
50%
TrendMonth
ODDS (%)
Bearish Trend 3 days ago
47%
Bullish Trend 3 days ago
65%
Advances
ODDS (%)
Bullish Trend 3 days ago
61%
Bullish Trend 16 days ago
66%
Declines
ODDS (%)
Bearish Trend 24 days ago
56%
Bearish Trend 4 days ago
50%
BollingerBands
ODDS (%)
Bearish Trend 4 days ago
56%
Bullish Trend 3 days ago
72%
Aroon
ODDS (%)
Bullish Trend 3 days ago
56%
Bullish Trend 3 days ago
62%
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HEI
Daily Signal:
Gain/Loss:
TDG
Daily Signal:
Gain/Loss:
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HEI and

Correlation & Price change

A.I.dvisor indicates that over the last year, HEI has been loosely correlated with TDG. These tickers have moved in lockstep 55% of the time. This A.I.-generated data suggests there is some statistical probability that if HEI jumps, then TDG could also see price increases.

1D
1W
1M
1Q
6M
1Y
5Y
Ticker /
NAME
Correlation
To HEI
1D Price
Change %
HEI100%
+2.13%
TDG - HEI
55%
Loosely correlated
+1.12%
VSEC - HEI
53%
Loosely correlated
+2.32%
WWD - HEI
51%
Loosely correlated
+2.93%
HWM - HEI
50%
Loosely correlated
+1.82%
GE - HEI
50%
Loosely correlated
+1.70%
More

TDG and

Correlation & Price change

A.I.dvisor indicates that over the last year, TDG has been loosely correlated with HEI. These tickers have moved in lockstep 57% of the time. This A.I.-generated data suggests there is some statistical probability that if TDG jumps, then HEI could also see price increases.

1D
1W
1M
1Q
6M
1Y
5Y
Ticker /
NAME
Correlation
To TDG
1D Price
Change %
TDG100%
+1.12%
HEI - TDG
57%
Loosely correlated
+2.13%
WWD - TDG
54%
Loosely correlated
+2.93%
GE - TDG
52%
Loosely correlated
+1.70%
HWM - TDG
49%
Loosely correlated
+1.82%
RTX - TDG
46%
Loosely correlated
+1.55%
More