LDOS vs. TDG

Last updated Jun 9, 2026

LDOS (Leidos Holdings, Inc.) and TDG (TransDigm Group Incorporated) are both stocks. LDOS operates in Information Technology Services (Technology), while TDG operates in Aerospace & Defense (Industrials). Over the past 10 years, LDOS returned 15.01%/yr vs 22.15%/yr for TDG. At a 0.38 correlation, their price movements are largely independent.

Performance

LDOS vs. TDG - Performance Comparison

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

Returns By Period

In the year-to-date period, LDOS achieves a -31.76% return, which is significantly lower than TDG's -9.29% return. Over the past 10 years, LDOS has underperformed TDG with an annualized return of 15.01%, while TDG has yielded a comparatively higher 22.15% annualized return.

LDOS

• 1D: -1.31%
• 1M: -5.62%
• YTD: -31.76%
• 6M: -33.53%
• 1Y: -16.31%
• 3Y*: 15.32%
• 5Y*: 4.53%
• 10Y*: 15.01%

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%

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

LDOS vs. TDG - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
LDOS Leidos Holdings, Inc.	-31.76%	26.50%	34.52%	4.50%	20.04%	-14.20%	8.95%	88.82%	-16.72%	29.14%
TDG TransDigm Group Incorporated	-9.29%	12.15%	32.27%	66.57%	1.77%	2.82%	10.51%	84.41%	23.83%	19.84%

Correlation

The correlation between LDOS and TDG is 0.28, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.28
Correlation (3Y) Calculated over the trailing 3-year period	0.35
Correlation (5Y) Calculated over the trailing 5-year period	0.37
Correlation (10Y) Calculated over the trailing 10-year period	0.41
Correlation (All Time) Calculated using the full available price history since Oct 16, 2006	0.38

The correlation between LDOS and TDG shifts across timeframes, from 0.28 (1 year) to 0.41 (10 years), reflecting how their relationship changes across market environments.

Fundamentals

Market Cap LDOS : $15.72B TDG : $70.21B
EPS LDOS : $10.92 TDG : $34.79
PE Ratio LDOS : 11.25 TDG : 34.67
PEG Ratio LDOS : 0.09 TDG : 1.03
PS Ratio LDOS : 0.92 TDG : 7.38
Total Revenue (TTM) LDOS : $17.33B TDG : $9.50B
Gross Profit (TTM) LDOS : $3.04B TDG : $5.61B
EBITDA (TTM) LDOS : $2.34B TDG : $4.78B

Return for Risk

LDOS vs. TDG — Risk / Return Rank

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

LDOS

LDOS Risk / Return Rank: 20
LDOS Sharpe Ratio Rank: 18
LDOS Sortino Ratio Rank: 19
LDOS Omega Ratio Rank: 18
LDOS Calmar Ratio Rank: 28
LDOS Martin Ratio Rank: 18

TDG

TDG Risk / Return Rank: 24
TDG Sharpe Ratio Rank: 23
TDG Sortino Ratio Rank: 22
TDG Omega Ratio Rank: 21
TDG Calmar Ratio Rank: 26
TDG Martin Ratio Rank: 26

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.

LDOS vs. TDG - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Leidos Holdings, Inc. (LDOS) and TransDigm Group Incorporated (TDG). 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.

	LDOS	TDG	Difference
Sharpe ratio: Return per unit of total volatility	-0.56	-0.44	-0.12
Sortino ratio: Return per unit of downside risk	-0.60	-0.41	-0.20
Omega ratio: Gain probability vs. loss probability	0.92	0.94	-0.03
Calmar ratio: Return relative to maximum drawdown	-0.43	-0.48	+0.05
Martin ratio: Return relative to average drawdown	-1.12	-0.83	-0.29
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

LDOS vs. TDG - Sharpe Ratio Comparison

The current LDOS Sharpe Ratio is -0.56, which is comparable to the TDG Sharpe Ratio of -0.44. The chart below compares the historical Sharpe Ratios of LDOS and TDG, 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

	LDOS	TDG	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	-0.56	-0.44	-0.12
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.17	0.61	-0.44
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.55	0.66	-0.11
Sharpe Ratio (All Time) Calculated using the full available price history	0.23	0.85	-0.62

Drawdowns

LDOS vs. TDG - Drawdown Comparison

The maximum LDOS drawdown since its inception was -54.72%, smaller than the maximum TDG drawdown of -62.64%. Use the drawdown chart below to compare losses from any high point for LDOS and TDG.

Drawdown Indicators

	LDOS	TDG	Difference
Max Drawdown Largest peak-to-trough decline	-54.72%	-62.64%	+7.92%
Max Drawdown (1Y) Largest decline over 1 year	-38.17%	-25.30%	-12.87%
Max Drawdown (3Y) Largest decline over 3 years	-38.17%	-25.30%	-12.87%
Max Drawdown (5Y) Largest decline over 5 years	-38.17%	-25.30%	-12.87%
Max Drawdown (10Y) Largest decline over 10 years	-42.29%	-62.64%	+20.35%
Current Drawdown Current decline from peak	-38.17%	-20.46%	-17.71%
Average Drawdown Average peak-to-trough decline	-19.67%	-7.95%	-11.72%
Ulcer Index Depth and duration of drawdowns from previous peaks	14.55%	14.58%	-0.03%

Volatility

LDOS vs. TDG - Volatility Comparison

The current volatility for Leidos Holdings, Inc. (LDOS) is 7.17%, while TransDigm Group Incorporated (TDG) has a volatility of 7.72%. This indicates that LDOS experiences smaller price fluctuations and is considered to be less risky than TDG based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	LDOS	TDG	Difference
Volatility (1M) Calculated over the trailing 1-month period	7.17%	7.72%	-0.55%
Volatility (6M) Calculated over the trailing 6-month period	25.18%	21.00%	+4.18%
Volatility (1Y) Calculated over the trailing 1-year period	29.33%	27.63%	+1.70%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	26.74%	27.81%	-1.07%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	27.50%	33.78%	-6.28%

Dividends

LDOS vs. TDG - Dividend Comparison

LDOS's dividend yield for the trailing twelve months is around 1.35%, less than TDG's 7.46% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
LDOS Leidos Holdings, Inc.	1.35%	0.90%	1.07%	1.35%	1.37%	1.57%	1.29%	1.35%	2.43%	1.98%	29.17%	3.41%
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

LDOS vs. TDG - Profitability Comparison

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

LDOS - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, Leidos Holdings, Inc. reported a gross profit of 761.00M and revenue of 4.40B. Therefore, the gross margin over that period was 17.3%.

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%.

LDOS - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, Leidos Holdings, Inc. reported an operating income of 508.00M and revenue of 4.40B, resulting in an operating margin of 11.6%.

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%.

LDOS - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, Leidos Holdings, Inc. reported a net income of 328.00M and revenue of 4.40B, resulting in a net margin of 7.5%.

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%.

Frequently Asked Questions

Can I hold both LDOS and TDG in my portfolio?

LDOS and TDG have a correlation of 0.28, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, LDOS or TDG?

TDG has higher volatility (7.72%) compared to LDOS (7.17%). In terms of maximum drawdown, LDOS dropped -54.72% vs TDG's -62.64%.

Which has better risk-adjusted returns?

TDG currently has the higher Sharpe Ratio (-0.44 vs -0.56), 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.