LDOS vs. TTEK

Last updated Apr 1, 2026

Compare and contrast key facts about Leidos Holdings, Inc. (LDOS) and Tetra Tech, Inc. (TTEK).

Performance

LDOS vs. TTEK - Performance Comparison

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

LDOS vs. TTEK - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
LDOS Leidos Holdings, Inc.	-13.58%	26.50%	34.52%	4.50%	20.04%	-14.20%	8.95%	88.82%	-16.72%	29.14%
TTEK Tetra Tech, Inc.	-10.05%	-15.19%	19.98%	15.74%	-13.96%	47.46%	35.34%	67.76%	8.39%	12.57%

Fundamentals

Market Cap LDOS : $20.59B TTEK : $7.91B
EPS LDOS : $11.12 TTEK : $1.33
PE Ratio LDOS : 13.98 TTEK : 22.67
PEG Ratio LDOS : 0.11 TTEK : 5.81
PS Ratio LDOS : 1.19 TTEK : 1.66
PB Ratio LDOS : 4.19 TTEK : 4.29
Total Revenue (TTM) LDOS : $17.17B TTEK : $4.80B
Gross Profit (TTM) LDOS : $3.03B TTEK : $960.24M
EBITDA (TTM) LDOS : $2.41B TTEK : $651.82M

Returns By Period

In the year-to-date period, LDOS achieves a -13.58% return, which is significantly lower than TTEK's -10.05% return. Over the past 10 years, LDOS has underperformed TTEK with an annualized return of 17.07%, while TTEK has yielded a comparatively higher 18.33% annualized return.

LDOS

• 1D: 0.86%
• 1M: -10.96%
• YTD: -13.58%
• 6M: -17.31%
• 1Y: 16.36%
• 3Y*: 20.49%
• 5Y*: 11.45%
• 10Y*: 17.07%

TTEK

• 1D: 1.21%
• 1M: -15.96%
• YTD: -10.05%
• 6M: -9.45%
• 1Y: 3.71%
• 3Y*: 1.49%
• 5Y*: 2.56%
• 10Y*: 18.33%

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

Return for Risk

LDOS vs. TTEK — Risk / Return Rank

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

LDOS

LDOS Risk / Return Rank: 60
LDOS Sharpe Ratio Rank: 63
LDOS Sortino Ratio Rank: 55
LDOS Omega Ratio Rank: 57
LDOS Calmar Ratio Rank: 60
LDOS Martin Ratio Rank: 65

TTEK

TTEK Risk / Return Rank: 44
TTEK Sharpe Ratio Rank: 45
TTEK Sortino Ratio Rank: 41
TTEK Omega Ratio Rank: 41
TTEK Calmar Ratio Rank: 45
TTEK Martin Ratio Rank: 46

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. TTEK - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Leidos Holdings, Inc. (LDOS) and Tetra Tech, Inc. (TTEK). 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	TTEK	Difference
Sharpe ratio Return per unit of total volatility	0.56	0.10	+0.46
Sortino ratio Return per unit of downside risk	0.93	0.44	+0.49
Omega ratio Gain probability vs. loss probability	1.14	1.06	+0.08
Calmar ratio Return relative to maximum drawdown	0.77	0.14	+0.63
Martin ratio Return relative to average drawdown	2.52	0.38	+2.13
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. TTEK - Sharpe Ratio Comparison

The current LDOS Sharpe Ratio is 0.56, which is higher than the TTEK Sharpe Ratio of 0.10. The chart below compares the historical Sharpe Ratios of LDOS and TTEK, 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

	LDOS	TTEK	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.56	0.10	+0.46
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.44	0.08	+0.36
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.63	0.58	+0.05
Sharpe Ratio (All Time) Calculated using the full available price history	—	0.34	—

Correlation

The correlation between LDOS and TTEK is 0.41, 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

LDOS vs. TTEK - Dividend Comparison

LDOS's dividend yield for the trailing twelve months is around 1.07%, more than TTEK's 0.86% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
LDOS Leidos Holdings, Inc.	1.07%	0.90%	1.07%	1.35%	1.37%	1.57%	1.29%	1.35%	2.43%	1.98%	29.17%	3.41%
TTEK Tetra Tech, Inc.	0.86%	0.75%	0.57%	0.61%	0.61%	0.45%	0.57%	0.66%	0.89%	0.81%	0.81%	1.19%

Drawdowns

LDOS vs. TTEK - Drawdown Comparison

The maximum LDOS drawdown since its inception was -1,482.10%, which is greater than TTEK's maximum drawdown of -77.89%. Use the drawdown chart below to compare losses from any high point for LDOS and TTEK.

Drawdown Indicators

	LDOS	TTEK	Difference
Max Drawdown Largest peak-to-trough decline	-1,482.10%	-77.89%	-1,404.21%
Max Drawdown (1Y) Largest decline over 1 year	-22.36%	-30.04%	+7.68%
Max Drawdown (5Y) Largest decline over 5 years	-36.86%	-44.38%	+7.52%
Max Drawdown (10Y) Largest decline over 10 years	-42.29%	-44.38%	+2.09%
Current Drawdown Current decline from peak	-1,182.27%	-39.76%	-1,142.51%
Average Drawdown Average peak-to-trough decline	-423.89%	-20.55%	-403.34%
Ulcer Index Depth and duration of drawdowns from previous peaks	6.80%	10.58%	-3.78%

Volatility

LDOS vs. TTEK - Volatility Comparison

The current volatility for Leidos Holdings, Inc. (LDOS) is 6.72%, while Tetra Tech, Inc. (TTEK) has a volatility of 9.18%. This indicates that LDOS experiences smaller price fluctuations and is considered to be less risky than TTEK based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	LDOS	TTEK	Difference
Volatility (1M) Calculated over the trailing 1-month period	6.72%	9.18%	-2.46%
Volatility (6M) Calculated over the trailing 6-month period	23.78%	30.81%	-7.03%
Volatility (1Y) Calculated over the trailing 1-year period	29.52%	37.18%	-7.66%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	26.26%	32.09%	-5.83%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	27.28%	31.97%	-4.69%

Financials

LDOS vs. TTEK - Profitability Comparison

The chart below illustrates the profitability comparison between Leidos Holdings, Inc. and Tetra Tech, Inc. 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 Apr 2026, Leidos Holdings, Inc. reported a gross profit of 673.12M and revenue of 4.21B. Therefore, the gross margin over that period was 16.0%.

TTEK - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Apr 2026, Tetra Tech, Inc. reported a gross profit of 220.37M and revenue of 1.21B. Therefore, the gross margin over that period was 18.2%.

LDOS - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Apr 2026, Leidos Holdings, Inc. reported an operating income of 471.18M and revenue of 4.21B, resulting in an operating margin of 11.2%.

TTEK - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Apr 2026, Tetra Tech, Inc. reported an operating income of 140.99M and revenue of 1.21B, resulting in an operating margin of 11.7%.

LDOS - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Apr 2026, Leidos Holdings, Inc. reported a net income of 335.00M and revenue of 4.21B, resulting in a net margin of 8.0%.

TTEK - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Apr 2026, Tetra Tech, Inc. reported a net income of 105.22M and revenue of 1.21B, resulting in a net margin of 8.7%.