LII vs. TTEK
LII (Lennox International Inc.) and TTEK (Tetra Tech, Inc.) are both stocks. Both are in the Industrials sector — LII in Specialty Industrial Machinery, TTEK in Engineering & Construction. Over the past 10 years, LII returned 15.59%/yr vs 17.62%/yr for TTEK. At a 0.39 correlation, their price movements are largely independent.
Performance
LII vs. TTEK - Performance Comparison
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Returns By Period
In the year-to-date period, LII achieves a 5.78% return, which is significantly higher than TTEK's -14.87% return. Over the past 10 years, LII has underperformed TTEK with an annualized return of 15.59%, while TTEK has yielded a comparatively higher 17.62% annualized return.
LII
- 1D
- -0.94%
- 1M
- -0.43%
- YTD
- 5.78%
- 6M
- 1.83%
- 1Y
- -3.83%
- 3Y*
- 19.41%
- 5Y*
- 9.92%
- 10Y*
- 15.59%
TTEK
- 1D
- 1.83%
- 1M
- 8.51%
- YTD
- -14.87%
- 6M
- -17.38%
- 1Y
- -20.53%
- 3Y*
- -3.02%
- 5Y*
- 3.25%
- 10Y*
- 17.62%
LII vs. TTEK - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
LII Lennox International Inc. | 5.78% | -19.54% | 37.27% | 89.55% | -24.94% | 19.71% | 13.79% | 12.78% | 6.33% | 37.43% |
TTEK Tetra Tech, Inc. | -14.87% | -15.19% | 19.98% | 15.74% | -13.96% | 47.46% | 35.34% | 67.76% | 8.39% | 12.57% |
Correlation
The correlation between LII and TTEK is 0.35, which is low. Their price movements are largely independent, making them effective diversification partners.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.35 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.39 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.45 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.41 |
Correlation (All Time) Calculated using the full available price history since Jul 29, 1999 | 0.39 |
The correlation between LII and TTEK shifts across timeframes, from 0.35 (1 year) to 0.45 (5 years), reflecting how their relationship changes across market environments.
Fundamentals
LII:
$17.93B
TTEK:
$7.46B
LII:
$22.20
TTEK:
$2.20
LII:
23.07
TTEK:
12.95
LII:
1.40
TTEK:
3.32
LII:
3.44
TTEK:
1.53
LII:
14.77
TTEK:
4.00
LII:
$5.26B
TTEK:
$4.91B
LII:
$1.74B
TTEK:
$960.15M
LII:
$1.10B
TTEK:
$627.52M
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Return for Risk
LII vs. TTEK — Risk / Return Rank
LII
TTEK
LII vs. TTEK - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Lennox International Inc. (LII) 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.
Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.
| LII | TTEK | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +0.43 | ||
| Sortino ratioReturn per unit of downside risk | +0.70 | ||
| Omega ratioGain probability vs. loss probability | 1.00 | 0.91 | +0.09 |
| Calmar ratioReturn relative to maximum drawdown | -0.18 | -0.55 | +0.37 |
| Martin ratioReturn relative to average drawdown | -0.29 | -1.21 | +0.92 |
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Drawdowns
LII vs. TTEK - Drawdown Comparison
The maximum LII drawdown since its inception was -62.76%, smaller than the maximum TTEK drawdown of -77.89%. Use the drawdown chart below to compare losses from any high point for LII and TTEK.
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Drawdown Indicators
| LII | TTEK | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -62.76% | -77.89% | +15.13% |
Max Drawdown (1Y)Largest decline over 1 year | -33.77% | -38.30% | +4.53% |
Max Drawdown (3Y)Largest decline over 3 years | -34.71% | -47.50% | +12.79% |
Max Drawdown (5Y)Largest decline over 5 years | -46.88% | -47.50% | +0.62% |
Max Drawdown (10Y)Largest decline over 10 years | -46.88% | -47.50% | +0.62% |
Current DrawdownCurrent decline from peak | -23.42% | -42.99% | +19.57% |
Average DrawdownAverage peak-to-trough decline | -14.51% | -20.67% | +6.16% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 20.90% | 17.36% | +3.54% |
Volatility
LII vs. TTEK - Volatility Comparison
Lennox International Inc. (LII) has a higher volatility of 10.80% compared to Tetra Tech, Inc. (TTEK) at 9.50%. This indicates that LII's price experiences larger fluctuations and is considered to be riskier than TTEK based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| LII | TTEK | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 10.80% | 9.50% | +1.30% |
Volatility (6M)Calculated over the trailing 6-month period | 26.49% | 27.30% | -0.81% |
Volatility (1Y)Calculated over the trailing 1-year period | 35.30% | 35.21% | +0.09% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 32.15% | 32.09% | +0.06% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 29.31% | 32.05% | -2.74% |
Dividends
LII vs. TTEK - Dividend Comparison
LII's dividend yield for the trailing twelve months is around 1.02%, more than TTEK's 0.94% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
LII Lennox International Inc. | 1.02% | 1.04% | 0.75% | 0.97% | 1.71% | 1.09% | 1.12% | 1.21% | 1.11% | 0.94% | 1.08% | 1.10% |
TTEK Tetra Tech, Inc. | 0.94% | 0.75% | 0.57% | 0.61% | 0.61% | 0.45% | 0.57% | 0.66% | 0.89% | 0.81% | 0.81% | 1.19% |
Financials
LII vs. TTEK - Financials Comparison
This section allows you to compare key financial metrics between Lennox International Inc. and Tetra Tech, Inc.. 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
LII vs. TTEK - Profitability Comparison
LII - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, Lennox International Inc. reported a gross profit of 351.30M and revenue of 1.14B. Therefore, the gross margin over that period was 31.0%.
TTEK - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, Tetra Tech, Inc. reported a gross profit of 214.09M and revenue of 1.22B. Therefore, the gross margin over that period was 17.6%.
LII - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, Lennox International Inc. reported an operating income of 163.50M and revenue of 1.14B, resulting in an operating margin of 14.4%.
TTEK - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, Tetra Tech, Inc. reported an operating income of 131.52M and revenue of 1.22B, resulting in an operating margin of 10.8%.
LII - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, Lennox International Inc. reported a net income of 117.20M and revenue of 1.14B, resulting in a net margin of 10.3%.
TTEK - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, Tetra Tech, Inc. reported a net income of 233.58M and revenue of 1.22B, resulting in a net margin of 19.1%.
Frequently Asked Questions
LII and TTEK have a correlation of 0.35, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
LII has higher volatility (10.80%) compared to TTEK (9.50%). In terms of maximum drawdown, LII dropped -62.76% vs TTEK's -77.89%.
LII currently has the higher Sharpe Ratio (-0.17 vs -0.60), 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.
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