^SP400 vs. TTEK

Last updated Jun 4, 2026

^SP400 (S&P 400 Index) is an index, while TTEK (Tetra Tech, Inc.) is a stock. Over the past 10 years, ^SP400 returned 9.59%/yr vs 17.31%/yr for TTEK. At a 0.48 correlation, their price movements are largely independent.

Performance

^SP400 vs. TTEK - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in S&P 400 Index (^SP400) and Tetra Tech, Inc. (TTEK). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, ^SP400 achieves a 13.49% return, which is significantly higher than TTEK's -16.76% return. Over the past 10 years, ^SP400 has underperformed TTEK with an annualized return of 9.59%, while TTEK has yielded a comparatively higher 17.31% annualized return.

^SP400

• 1D: -0.10%
• 1M: 3.74%
• YTD: 13.49%
• 6M: 13.56%
• 1Y: 23.75%
• 3Y*: 14.40%
• 5Y*: 6.57%
• 10Y*: 9.59%

TTEK

• 1D: 2.47%
• 1M: -11.99%
• YTD: -16.76%
• 6M: -19.63%
• 1Y: -20.12%
• 3Y*: -2.52%
• 5Y*: 3.77%
• 10Y*: 17.31%

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

^SP400 vs. TTEK - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
^SP400 S&P 400 Index	13.49%	5.90%	12.20%	14.45%	-14.48%	23.21%	11.81%	24.05%	-12.50%	14.45%
TTEK Tetra Tech, Inc.	-16.76%	-15.19%	19.98%	15.74%	-13.96%	47.46%	35.34%	67.76%	8.39%	12.57%

Correlation

The correlation between ^SP400 and TTEK is 0.44, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.44
Correlation (3Y) Calculated over the trailing 3-year period	0.47
Correlation (5Y) Calculated over the trailing 5-year period	0.56
Correlation (10Y) Calculated over the trailing 10-year period	0.60
Correlation (All Time) Calculated using the full available price history since Mar 12, 1992	0.48

The correlation between ^SP400 and TTEK shifts across timeframes, from 0.44 (1 year) to 0.60 (10 years), reflecting how their relationship changes across market environments.

Return for Risk

^SP400 vs. TTEK — Risk / Return Rank

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

^SP400

^SP400 Risk / Return Rank: 57
^SP400 Sharpe Ratio Rank: 52
^SP400 Sortino Ratio Rank: 54
^SP400 Omega Ratio Rank: 53
^SP400 Calmar Ratio Rank: 62
^SP400 Martin Ratio Rank: 62

TTEK

TTEK Risk / Return Rank: 17
TTEK Sharpe Ratio Rank: 16
TTEK Sortino Ratio Rank: 16
TTEK Omega Ratio Rank: 16
TTEK Calmar Ratio Rank: 22
TTEK Martin Ratio Rank: 13

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.

^SP400 vs. TTEK - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for S&P 400 Index (^SP400) 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.

	^SP400	TTEK	Difference
Sharpe ratio Return per unit of total volatility	1.55	-0.58	+2.13
Sortino ratio Return per unit of downside risk	2.27	-0.66	+2.94
Omega ratio Gain probability vs. loss probability	1.27	0.91	+0.36
Calmar ratio Return relative to maximum drawdown	2.66	-0.53	+3.19
Martin ratio Return relative to average drawdown	9.58	-1.23	+10.81
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

^SP400 vs. TTEK - Sharpe Ratio Comparison

The current ^SP400 Sharpe Ratio is 1.55, which is higher than the TTEK Sharpe Ratio of -0.58. The chart below compares the historical Sharpe Ratios of ^SP400 and TTEK, 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

	^SP400	TTEK	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.55	-0.58	+2.13
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.34	0.12	+0.22
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.46	0.54	-0.08
Sharpe Ratio (All Time) Calculated using the full available price history	0.49	0.34	+0.16

Drawdowns

^SP400 vs. TTEK - Drawdown Comparison

The maximum ^SP400 drawdown since its inception was -56.32%, smaller than the maximum TTEK drawdown of -77.89%. Use the drawdown chart below to compare losses from any high point for ^SP400 and TTEK.

Drawdown Indicators

	^SP400	TTEK	Difference
Max Drawdown Largest peak-to-trough decline	-56.32%	-77.89%	+21.57%
Max Drawdown (1Y) Largest decline over 1 year	-8.96%	-38.30%	+29.34%
Max Drawdown (3Y) Largest decline over 3 years	-24.46%	-47.50%	+23.04%
Max Drawdown (5Y) Largest decline over 5 years	-24.46%	-47.50%	+23.04%
Max Drawdown (10Y) Largest decline over 10 years	-42.14%	-47.50%	+5.36%
Current Drawdown Current decline from peak	-0.10%	-44.25%	+44.15%
Average Drawdown Average peak-to-trough decline	-7.15%	-20.65%	+13.50%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.48%	16.39%	-13.91%

Volatility

^SP400 vs. TTEK - Volatility Comparison

The current volatility for S&P 400 Index (^SP400) is 4.37%, while Tetra Tech, Inc. (TTEK) has a volatility of 10.81%. This indicates that ^SP400 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

	^SP400	TTEK	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.37%	10.81%	-6.44%
Volatility (6M) Calculated over the trailing 6-month period	11.28%	27.17%	-15.89%
Volatility (1Y) Calculated over the trailing 1-year period	15.43%	34.93%	-19.50%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	19.63%	32.06%	-12.43%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	21.00%	32.03%	-11.03%

Frequently Asked Questions

Can I hold both ^SP400 and TTEK in my portfolio?

^SP400 and TTEK have a correlation of 0.44, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, ^SP400 or TTEK?

TTEK has higher volatility (10.81%) compared to ^SP400 (4.37%). In terms of maximum drawdown, ^SP400 dropped -56.32% vs TTEK's -77.89%.

Which has better risk-adjusted returns?

^SP400 currently has the higher Sharpe Ratio (1.55 vs -0.58), 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.