TDG vs. AJG
TDG (TransDigm Group Incorporated) and AJG (Arthur J. Gallagher & Co.) are both stocks. TDG operates in Aerospace & Defense (Industrials), while AJG operates in Insurance Brokers (Financial Services). Over the past 10 years, TDG returned 22.15%/yr vs 17.92%/yr for AJG. At a 0.39 correlation, their price movements are largely independent.
Performance
TDG vs. AJG - Performance Comparison
Loading charts...
Returns By Period
In the year-to-date period, TDG achieves a -9.29% return, which is significantly higher than AJG's -17.35% return. Over the past 10 years, TDG has outperformed AJG with an annualized return of 22.15%, while AJG has yielded a comparatively lower 17.92% annualized return.
TDG
- 1D
- -2.62%
- 1M
- -0.72%
- YTD
- -9.29%
- 6M
- -10.46%
- 1Y
- -12.05%
- 3Y*
- 20.83%
- 5Y*
- 16.93%
- 10Y*
- 22.15%
AJG
- 1D
- -1.67%
- 1M
- 7.22%
- YTD
- -17.35%
- 6M
- -10.08%
- 1Y
- -34.63%
- 3Y*
- 1.87%
- 5Y*
- 9.17%
- 10Y*
- 17.92%
TDG vs. AJG - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
TDG TransDigm Group Incorporated | -9.29% | 12.15% | 32.27% | 66.57% | 1.77% | 2.82% | 10.51% | 84.41% | 23.83% | 19.84% |
AJG Arthur J. Gallagher & Co. | -17.35% | -8.03% | 27.34% | 20.51% | 12.44% | 39.02% | 32.12% | 31.79% | 19.19% | 25.04% |
Correlation
The correlation between TDG and AJG is 0.19, which is low. Their price movements are largely independent, making them effective diversification partners.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.19 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.28 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.38 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.39 |
Correlation (All Time) Calculated using the full available price history since Mar 16, 2006 | 0.39 |
Over the past year, the correlation between TDG and AJG has dropped to 0.19 - well below their long-term average of 0.39, suggesting their price drivers have been diverging.
Fundamentals
TDG:
$34.79
AJG:
$5.74
TDG:
34.67
AJG:
37.04
TDG:
1.03
AJG:
3.84
TDG:
7.38
AJG:
3.97
TDG:
$9.50B
AJG:
$13.94B
TDG:
$5.61B
AJG:
$7.63B
TDG:
$4.78B
AJG:
$3.66B
Compare stocks, funds, or ETFs
Search for stocks, ETFs, and funds for a quick comparison or use the comparison tool for more options.
Return for Risk
TDG vs. AJG — Risk / Return Rank
TDG
AJG
TDG vs. AJG - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for TransDigm Group Incorporated (TDG) and Arthur J. Gallagher & Co. (AJG). 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 | AJG | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +0.81 | ||
| Sortino ratioReturn per unit of downside risk | +1.31 | ||
| Omega ratioGain probability vs. loss probability | 0.94 | 0.78 | +0.16 |
| Calmar ratioReturn relative to maximum drawdown | -0.48 | -0.85 | +0.38 |
| Martin ratioReturn relative to average drawdown | -0.83 | -1.47 | +0.65 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
Loading charts...
Sharpe Ratios by Period
| TDG | AJG | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | -0.44 | -1.25 | +0.81 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.61 | 0.40 | +0.21 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.66 | 0.78 | -0.12 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.85 | 0.47 | +0.37 |
Drawdowns
TDG vs. AJG - Drawdown Comparison
The maximum TDG drawdown since its inception was -62.64%, which is greater than AJG's maximum drawdown of -57.49%. Use the drawdown chart below to compare losses from any high point for TDG and AJG.
Loading charts...
Drawdown Indicators
| TDG | AJG | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -62.64% | -57.49% | -5.15% |
Max Drawdown (1Y)Largest decline over 1 year | -25.30% | -40.64% | +15.34% |
Max Drawdown (3Y)Largest decline over 3 years | -25.30% | -44.40% | +19.10% |
Max Drawdown (5Y)Largest decline over 5 years | -25.30% | -44.40% | +19.10% |
Max Drawdown (10Y)Largest decline over 10 years | -62.64% | -44.40% | -18.24% |
Current DrawdownCurrent decline from peak | -20.46% | -38.26% | +17.80% |
Average DrawdownAverage peak-to-trough decline | -7.95% | -12.83% | +4.88% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 14.58% | 24.06% | -9.48% |
Volatility
TDG vs. AJG - Volatility Comparison
The current volatility for TransDigm Group Incorporated (TDG) is 7.72%, while Arthur J. Gallagher & Co. (AJG) has a volatility of 8.97%. This indicates that TDG experiences smaller price fluctuations and is considered to be less risky than AJG based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
Loading charts...
Volatility by Period
| TDG | AJG | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 7.72% | 8.97% | -1.25% |
Volatility (6M)Calculated over the trailing 6-month period | 21.00% | 22.42% | -1.42% |
Volatility (1Y)Calculated over the trailing 1-year period | 27.63% | 27.95% | -0.32% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 27.81% | 22.96% | +4.85% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 33.78% | 23.08% | +10.70% |
Dividends
TDG vs. AJG - Dividend Comparison
TDG's dividend yield for the trailing twelve months is around 7.46%, more than AJG's 1.27% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
AJG Arthur J. Gallagher & Co. | 1.27% | 1.00% | 0.85% | 0.98% | 1.08% | 1.13% | 1.46% | 1.81% | 2.23% | 2.47% | 2.93% | 3.62% |
TDG TransDigm Group Incorporated | 7.46% | 6.77% | 5.92% | 3.46% | 2.94% | 0.00% | 0.00% | 11.16% | 0.00% | 8.01% | 9.64% | 0.00% |
Financials
TDG vs. AJG - Financials Comparison
This section allows you to compare key financial metrics between TransDigm Group Incorporated and Arthur J. Gallagher & Co.. You can select fields from income statements, balance sheets, and cash flow statements to easily visualize and compare the financial health of both companies.
Total Revenue: Total amount of money received from sales and other business activities
TDG vs. AJG - Profitability Comparison
TDG - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, TransDigm Group Incorporated reported a gross profit of 1.51B and revenue of 2.54B. Therefore, the gross margin over that period was 59.4%.
AJG - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, Arthur J. Gallagher & Co. reported a gross profit of 1.42B and revenue of 3.63B. Therefore, the gross margin over that period was 39.1%.
TDG - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, TransDigm Group Incorporated reported an operating income of 1.18B and revenue of 2.54B, resulting in an operating margin of 46.3%.
AJG - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, Arthur J. Gallagher & Co. reported an operating income of 341.00M and revenue of 3.63B, resulting in an operating margin of 9.4%.
TDG - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, TransDigm Group Incorporated reported a net income of 535.00M and revenue of 2.54B, resulting in a net margin of 21.0%.
AJG - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, Arthur J. Gallagher & Co. reported a net income of 151.00M and revenue of 3.63B, resulting in a net margin of 4.2%.
Frequently Asked Questions
TDG and AJG have a correlation of 0.19, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
AJG has higher volatility (8.97%) compared to TDG (7.72%). In terms of maximum drawdown, TDG dropped -62.64% vs AJG's -57.49%.
TDG currently has the higher Sharpe Ratio (-0.44 vs -1.25), 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.
Find the right allocation for TDG and AJG
Add both to a portfolio and optimize allocations for your target — whether that's maximizing returns, minimizing drawdowns, or balancing risk across holdings.
Open Portfolio Optimizer