ETV vs. MBS

Last updated Jun 4, 2026

ETV (Eaton Vance Tax-Managed Buy-Write Opportunities Fund) is a stock, while MBS (Angel Oak Mortgage-Backed Securities ETF) is Intermediate Core-Plus Bond fund actively managed by Angel Oak. Over the past year, ETV returned 19.27% vs 6.88% for MBS. At a 0.10 correlation, their price movements are largely independent.

Performance

ETV vs. MBS - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Eaton Vance Tax-Managed Buy-Write Opportunities Fund (ETV) and Angel Oak Mortgage-Backed Securities ETF (MBS). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, ETV achieves a 7.46% return, which is significantly higher than MBS's 0.62% return.

ETV

• 1D: -0.27%
• 1M: 2.96%
• YTD: 7.46%
• 6M: 8.52%
• 1Y: 19.27%
• 3Y*: 16.37%
• 5Y*: 7.61%
• 10Y*: 9.31%

MBS

• 1D: -0.29%
• 1M: -0.22%
• YTD: 0.62%
• 6M: 0.84%
• 1Y: 6.88%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

ETV vs. MBS - Yearly Performance Comparison

	2026 (YTD)	2025	2024
ETV Eaton Vance Tax-Managed Buy-Write Opportunities Fund	7.46%	8.63%	21.95%
MBS Angel Oak Mortgage-Backed Securities ETF	0.62%	8.13%	5.78%

Correlation

The correlation between ETV and MBS is 0.10, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.10
Correlation (All Time) Calculated using the full available price history since Feb 21, 2024	0.10

Return for Risk

ETV vs. MBS — Risk / Return Rank

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

ETV

ETV Risk / Return Rank: 79
ETV Sharpe Ratio Rank: 82
ETV Sortino Ratio Rank: 79
ETV Omega Ratio Rank: 77
ETV Calmar Ratio Rank: 73
ETV Martin Ratio Rank: 86

MBS

MBS Risk / Return Rank: 69
MBS Sharpe Ratio Rank: 72
MBS Sortino Ratio Rank: 79
MBS Omega Ratio Rank: 75
MBS Calmar Ratio Rank: 64
MBS Martin Ratio Rank: 57

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.

ETV vs. MBS - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Eaton Vance Tax-Managed Buy-Write Opportunities Fund (ETV) and Angel Oak Mortgage-Backed Securities ETF (MBS). 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.

	ETV	MBS	Difference
Sharpe ratio: Return per unit of total volatility	1.58	2.36	-0.78
Sortino ratio: Return per unit of downside risk	2.26	3.54	-1.28
Omega ratio: Gain probability vs. loss probability	1.28	1.45	-0.16
Calmar ratio: Return relative to maximum drawdown	1.87	3.14	-1.27
Martin ratio: Return relative to average drawdown	9.60	9.89	-0.29
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

ETV vs. MBS - Sharpe Ratio Comparison

The current ETV Sharpe Ratio is 1.58, which is lower than the MBS Sharpe Ratio of 2.36. The chart below compares the historical Sharpe Ratios of ETV and MBS, 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

	ETV	MBS	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.58	2.36	-0.78
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.45	—	—
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.48	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.43	1.60	-1.17

Drawdowns

ETV vs. MBS - Drawdown Comparison

The maximum ETV drawdown since its inception was -52.11%, which is greater than MBS's maximum drawdown of -4.09%. Use the drawdown chart below to compare losses from any high point for ETV and MBS.

Drawdown Indicators

	ETV	MBS	Difference
Max Drawdown Largest peak-to-trough decline	-52.11%	-4.09%	-48.02%
Max Drawdown (1Y) Largest decline over 1 year	-10.34%	-2.20%	-8.14%
Max Drawdown (3Y) Largest decline over 3 years	-20.27%	—	—
Max Drawdown (5Y) Largest decline over 5 years	-22.71%	—	—
Max Drawdown (10Y) Largest decline over 10 years	-42.39%	—	—
Current Drawdown Current decline from peak	-0.27%	-1.46%	+1.19%
Average Drawdown Average peak-to-trough decline	-5.58%	-1.02%	-4.56%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.01%	0.70%	+1.31%

Volatility

ETV vs. MBS - Volatility Comparison

Eaton Vance Tax-Managed Buy-Write Opportunities Fund (ETV) has a higher volatility of 3.40% compared to Angel Oak Mortgage-Backed Securities ETF (MBS) at 0.90%. This indicates that ETV's price experiences larger fluctuations and is considered to be riskier than MBS based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	ETV	MBS	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.40%	0.90%	+2.50%
Volatility (6M) Calculated over the trailing 6-month period	10.01%	2.00%	+8.01%
Volatility (1Y) Calculated over the trailing 1-year period	12.24%	2.93%	+9.31%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	16.88%	3.99%	+12.89%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	19.33%	3.99%	+15.34%

Dividends

ETV vs. MBS - Dividend Comparison

ETV's dividend yield for the trailing twelve months is around 7.99%, more than MBS's 5.61% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
ETV Eaton Vance Tax-Managed Buy-Write Opportunities Fund	7.99%	8.30%	8.18%	9.24%	10.57%	7.94%	8.66%	8.89%	9.86%	8.65%	8.96%	8.69%
MBS Angel Oak Mortgage-Backed Securities ETF	5.61%	5.28%	4.52%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both ETV and MBS in my portfolio?

ETV and MBS have a correlation of 0.10, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, ETV or MBS?

ETV has higher volatility (3.40%) compared to MBS (0.90%). In terms of maximum drawdown, ETV dropped -52.11% vs MBS's -4.09%.

Which has better risk-adjusted returns?

MBS currently has the higher Sharpe Ratio (2.36 vs 1.58), 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.