ETW vs. EOS-USD

Last updated Apr 2, 2026

Compare and contrast key facts about Eaton Vance Tax-Managed Global Buy-Write Opportunities Fund (ETW) and EOS (EOS-USD).

Performance

ETW vs. EOS-USD - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Eaton Vance Tax-Managed Global Buy-Write Opportunities Fund (ETW) and EOS (EOS-USD). The values are adjusted to include any dividend payments, if applicable.

ETW vs. EOS-USD - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
ETW Eaton Vance Tax-Managed Global Buy-Write Opportunities Fund	-1.13%	20.10%	19.03%	9.34%	-23.87%	25.36%	3.24%	18.87%	-12.10%	9.22%
EOS-USD EOS	-50.07%	-79.52%	-8.35%	-1.89%	-71.60%	16.76%	0.93%	0.16%	-70.72%	931.30%

Returns By Period

In the year-to-date period, ETW achieves a -1.13% return, which is significantly higher than EOS-USD's -50.07% return.

ETW

• 1D: 1.59%
• 1M: -4.90%
• YTD: -1.13%
• 6M: 2.63%
• 1Y: 18.63%
• 3Y*: 13.24%
• 5Y*: 6.18%
• 10Y*: 7.94%

EOS-USD

• 1D: 4.79%
• 1M: 2.60%
• YTD: -50.07%
• 6M: -80.69%
• 1Y: -88.50%
• 3Y*: -59.94%
• 5Y*: -58.27%
• 10Y*: —

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

Return for Risk

ETW vs. EOS-USD — Risk / Return Rank

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

ETW

ETW Risk / Return Rank: 74
ETW Sharpe Ratio Rank: 74
ETW Sortino Ratio Rank: 69
ETW Omega Ratio Rank: 74
ETW Calmar Ratio Rank: 69
ETW Martin Ratio Rank: 83

EOS-USD

EOS-USD Risk / Return Rank: 22
EOS-USD Sharpe Ratio Rank: 3
EOS-USD Sortino Ratio Rank: 0
EOS-USD Omega Ratio Rank: 0
EOS-USD Calmar Ratio Rank: 50
EOS-USD Martin Ratio Rank: 58

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.

ETW vs. EOS-USD - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Eaton Vance Tax-Managed Global Buy-Write Opportunities Fund (ETW) and EOS (EOS-USD). 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.

	ETW	EOS-USD	Difference
Sharpe ratio Return per unit of total volatility	1.02	-1.05	+2.08
Sortino ratio Return per unit of downside risk	1.60	-2.76	+4.36
Omega ratio Gain probability vs. loss probability	1.25	0.72	+0.53
Calmar ratio Return relative to maximum drawdown	1.45	-1.08	+2.54
Martin ratio Return relative to average drawdown	7.33	-1.53	+8.86
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

ETW vs. EOS-USD - Sharpe Ratio Comparison

The current ETW Sharpe Ratio is 1.02, which is higher than the EOS-USD Sharpe Ratio of -1.05. The chart below compares the historical Sharpe Ratios of ETW and EOS-USD, 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

	ETW	EOS-USD	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.02	-1.05	+2.08
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.37	-0.59	+0.96
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.40	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.33	-0.19	+0.52

Correlation

The correlation between ETW and EOS-USD is 0.14, which is considered to be low. This implies their price changes are not closely related. A low correlation is generally favorable for portfolio diversification, as it helps to reduce overall risk by spreading it across multiple assets with different performance patterns.

Drawdowns

ETW vs. EOS-USD - Drawdown Comparison

The maximum ETW drawdown since its inception was -54.13%, smaller than the maximum EOS-USD drawdown of -99.67%. Use the drawdown chart below to compare losses from any high point for ETW and EOS-USD.

Drawdown Indicators

	ETW	EOS-USD	Difference
Max Drawdown Largest peak-to-trough decline	-54.13%	-99.67%	+45.54%
Max Drawdown (1Y) Largest decline over 1 year	-12.62%	-92.33%	+79.71%
Max Drawdown (5Y) Largest decline over 5 years	-27.94%	-99.50%	+71.56%
Max Drawdown (10Y) Largest decline over 10 years	-47.96%	—	—
Current Drawdown Current decline from peak	-5.50%	-99.63%	+94.13%
Average Drawdown Average peak-to-trough decline	-7.75%	-84.66%	+76.91%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.50%	61.91%	-59.41%

Volatility

ETW vs. EOS-USD - Volatility Comparison

The current volatility for Eaton Vance Tax-Managed Global Buy-Write Opportunities Fund (ETW) is 6.68%, while EOS (EOS-USD) has a volatility of 14.80%. This indicates that ETW experiences smaller price fluctuations and is considered to be less risky than EOS-USD based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	ETW	EOS-USD	Difference
Volatility (1M) Calculated over the trailing 1-month period	6.68%	14.80%	-8.12%
Volatility (6M) Calculated over the trailing 6-month period	9.65%	61.25%	-51.60%
Volatility (1Y) Calculated over the trailing 1-year period	18.27%	70.61%	-52.34%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	16.75%	82.89%	-66.14%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	19.83%	105.22%	-85.39%