EIRAX vs. COTZX

Last updated Jun 3, 2026

EIRAX (Eaton Vance Richard Bernstein All Asset Strategy Fund) and COTZX (Columbia Thermostat Fund) are both Tactical Allocation funds. Over the past 10 years, EIRAX returned 6.15%/yr vs 7.43%/yr for COTZX. A 0.79 correlation means they provide meaningful diversification when combined. EIRAX charges 0.93%/yr vs 0.24%/yr for COTZX.

Performance

EIRAX vs. COTZX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Eaton Vance Richard Bernstein All Asset Strategy Fund (EIRAX) and Columbia Thermostat Fund (COTZX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, EIRAX achieves a 7.56% return, which is significantly higher than COTZX's 3.44% return. Over the past 10 years, EIRAX has underperformed COTZX with an annualized return of 6.15%, while COTZX has yielded a comparatively higher 7.43% annualized return.

EIRAX

• 1D: 0.12%
• 1M: 2.79%
• YTD: 7.56%
• 6M: 8.62%
• 1Y: 18.05%
• 3Y*: 10.14%
• 5Y*: 3.79%
• 10Y*: 6.15%

COTZX

• 1D: 0.11%
• 1M: 1.27%
• YTD: 3.44%
• 6M: 3.65%
• 1Y: 12.89%
• 3Y*: 10.85%
• 5Y*: 4.75%
• 10Y*: 7.43%

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

EIRAX vs. COTZX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
EIRAX Eaton Vance Richard Bernstein All Asset Strategy Fund	7.56%	12.89%	7.68%	6.80%	-14.73%	7.22%	9.83%	16.28%	-7.47%	15.02%
COTZX Columbia Thermostat Fund	3.44%	15.02%	7.98%	11.66%	-12.92%	6.44%	29.61%	15.15%	-1.17%	3.33%

Correlation

The correlation between EIRAX and COTZX is 0.89, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.89
Correlation (3Y) Calculated over the trailing 3-year period	0.90
Correlation (5Y) Calculated over the trailing 5-year period	0.84
Correlation (10Y) Calculated over the trailing 10-year period	0.79
Correlation (All Time) Calculated using the full available price history since Aug 6, 2012	0.79

The correlation between EIRAX and COTZX shifts across timeframes, from 0.79 (10 years) to 0.90 (3 years), reflecting how their relationship changes across market environments.

Return for Risk

EIRAX vs. COTZX — Risk / Return Rank

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

EIRAX

EIRAX Risk / Return Rank: 49
EIRAX Sharpe Ratio Rank: 52
EIRAX Sortino Ratio Rank: 51
EIRAX Omega Ratio Rank: 53
EIRAX Calmar Ratio Rank: 38
EIRAX Martin Ratio Rank: 52

COTZX

COTZX Risk / Return Rank: 78
COTZX Sharpe Ratio Rank: 79
COTZX Sortino Ratio Rank: 81
COTZX Omega Ratio Rank: 77
COTZX Calmar Ratio Rank: 70
COTZX Martin Ratio Rank: 81

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.

EIRAX vs. COTZX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Eaton Vance Richard Bernstein All Asset Strategy Fund (EIRAX) and Columbia Thermostat Fund (COTZX). 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.

	EIRAX	COTZX	Difference
Sharpe ratio Return per unit of total volatility	2.13	2.59	-0.46
Sortino ratio Return per unit of downside risk	3.03	3.84	-0.82
Omega ratio Gain probability vs. loss probability	1.40	1.51	-0.10
Calmar ratio Return relative to maximum drawdown	2.36	3.24	-0.88
Martin ratio Return relative to average drawdown	10.69	15.29	-4.60
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

EIRAX vs. COTZX - Sharpe Ratio Comparison

The current EIRAX Sharpe Ratio is 2.13, which is comparable to the COTZX Sharpe Ratio of 2.59. The chart below compares the historical Sharpe Ratios of EIRAX and COTZX, 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

	EIRAX	COTZX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.13	2.59	-0.46
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.43	0.65	-0.22
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.68	1.01	-0.33
Sharpe Ratio (All Time) Calculated using the full available price history	0.68	0.64	+0.04

Drawdowns

EIRAX vs. COTZX - Drawdown Comparison

The maximum EIRAX drawdown since its inception was -19.85%, smaller than the maximum COTZX drawdown of -47.48%. Use the drawdown chart below to compare losses from any high point for EIRAX and COTZX.

Drawdown Indicators

	EIRAX	COTZX	Difference
Max Drawdown Largest peak-to-trough decline	-19.85%	-47.48%	+27.63%
Max Drawdown (1Y) Largest decline over 1 year	-7.73%	-4.02%	-3.71%
Max Drawdown (3Y) Largest decline over 3 years	-8.71%	-6.93%	-1.78%
Max Drawdown (5Y) Largest decline over 5 years	-19.85%	-17.80%	-2.05%
Max Drawdown (10Y) Largest decline over 10 years	-19.85%	-17.80%	-2.05%
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-3.82%	-3.47%	-0.35%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.71%	0.85%	+0.86%

Volatility

EIRAX vs. COTZX - Volatility Comparison

Eaton Vance Richard Bernstein All Asset Strategy Fund (EIRAX) has a higher volatility of 2.74% compared to Columbia Thermostat Fund (COTZX) at 1.60%. This indicates that EIRAX's price experiences larger fluctuations and is considered to be riskier than COTZX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	EIRAX	COTZX	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.74%	1.60%	+1.14%
Volatility (6M) Calculated over the trailing 6-month period	7.25%	3.96%	+3.29%
Volatility (1Y) Calculated over the trailing 1-year period	8.60%	5.07%	+3.53%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	8.80%	7.33%	+1.47%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	9.10%	7.39%	+1.71%

EIRAX vs. COTZX - Expense Ratio Comparison

EIRAX has a 0.93% expense ratio, which is higher than COTZX's 0.24% expense ratio.

Dividends

EIRAX vs. COTZX - Dividend Comparison

EIRAX's dividend yield for the trailing twelve months is around 2.60%, less than COTZX's 3.26% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
COTZX Columbia Thermostat Fund	3.26%	3.37%	3.55%	2.74%	3.28%	14.82%	6.92%	5.57%	4.45%	3.13%	2.66%	4.26%
EIRAX Eaton Vance Richard Bernstein All Asset Strategy Fund	2.60%	2.80%	2.35%	2.58%	1.11%	5.68%	3.13%	7.42%	2.98%	2.35%	0.73%	1.59%

Frequently Asked Questions

Can I hold both EIRAX and COTZX in my portfolio?

EIRAX and COTZX have a correlation of 0.89, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, EIRAX or COTZX?

EIRAX has higher volatility (2.74%) compared to COTZX (1.60%). In terms of maximum drawdown, EIRAX dropped -19.85% vs COTZX's -47.48%.

Which has better risk-adjusted returns?

COTZX currently has the higher Sharpe Ratio (2.59 vs 2.13), 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.