TTEK vs. LDOS

Last updated Apr 1, 2026

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

Performance

TTEK vs. LDOS - Performance Comparison

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

TTEK vs. LDOS - Yearly Performance Comparison

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

Fundamentals

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

Returns By Period

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

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%

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%

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

Return for Risk

TTEK vs. LDOS — Risk / Return Rank

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

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

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

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.

TTEK vs. LDOS - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Tetra Tech, Inc. (TTEK) and Leidos Holdings, Inc. (LDOS). 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.

	TTEK	LDOS	Difference
Sharpe ratio Return per unit of total volatility	0.10	0.56	-0.46
Sortino ratio Return per unit of downside risk	0.44	0.93	-0.49
Omega ratio Gain probability vs. loss probability	1.06	1.14	-0.08
Calmar ratio Return relative to maximum drawdown	0.14	0.77	-0.63
Martin ratio Return relative to average drawdown	0.38	2.52	-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.

TTEK vs. LDOS - Sharpe Ratio Comparison

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

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

Correlation

The correlation between TTEK and LDOS 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

TTEK vs. LDOS - Dividend Comparison

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

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
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%
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%

Drawdowns

TTEK vs. LDOS - Drawdown Comparison

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

Drawdown Indicators

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

Volatility

TTEK vs. LDOS - Volatility Comparison

Tetra Tech, Inc. (TTEK) has a higher volatility of 9.18% compared to Leidos Holdings, Inc. (LDOS) at 6.72%. This indicates that TTEK's price experiences larger fluctuations and is considered to be riskier than LDOS based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

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

Financials

TTEK vs. LDOS - Profitability Comparison

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

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 - 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 - 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 - 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 - 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%.

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%.