ZWEN.TO vs. ZSP.TO

Last updated Apr 1, 2026

Compare and contrast key facts about BMO Covered Call Energy ETF (ZWEN.TO) and BMO S&P 500 Index ETF (ZSP.TO).

ZWEN.TO and ZSP.TO are both exchange-traded funds (ETFs), meaning they are traded on stock exchanges and can be bought and sold throughout the day. ZWEN.TO is an actively managed fund by BMO. It was launched on Jan 23, 2023. ZSP.TO is a passively managed fund by BMO that tracks the performance of the S&P 500 Index. It was launched on Nov 14, 2012.

Performance

ZWEN.TO vs. ZSP.TO - Performance Comparison

The chart below illustrates the hypothetical performance of a CA$10,000 investment in BMO Covered Call Energy ETF (ZWEN.TO) and BMO S&P 500 Index ETF (ZSP.TO). The values are adjusted to include any dividend payments, if applicable.

ZWEN.TO vs. ZSP.TO - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023
ZWEN.TO BMO Covered Call Energy ETF	31.77%	6.74%	10.43%	2.68%
ZSP.TO BMO S&P 500 Index ETF	-3.17%	12.02%	35.07%	18.36%

Returns By Period

In the year-to-date period, ZWEN.TO achieves a 31.77% return, which is significantly higher than ZSP.TO's -3.17% return.

ZWEN.TO

• 1D: -0.75%
• 1M: 12.19%
• YTD: 31.77%
• 6M: 30.76%
• 1Y: 29.50%
• 3Y*: 18.70%
• 5Y*: —
• 10Y*: —

ZSP.TO

• 1D: 2.73%
• 1M: -3.14%
• YTD: -3.17%
• 6M: -2.25%
• 1Y: 13.31%
• 3Y*: 18.98%
• 5Y*: 13.70%
• 10Y*: 14.40%

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

ZWEN.TO vs. ZSP.TO - Expense Ratio Comparison

ZWEN.TO has a 0.88% expense ratio, which is higher than ZSP.TO's 0.09% expense ratio.

ZWEN.TO

BMO Covered Call Energy ETF

ZSP.TO

BMO S&P 500 Index ETF

Return for Risk

ZWEN.TO vs. ZSP.TO — Risk / Return Rank

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

ZWEN.TO

ZWEN.TO Risk / Return Rank: 67
ZWEN.TO Sharpe Ratio Rank: 76
ZWEN.TO Sortino Ratio Rank: 69
ZWEN.TO Omega Ratio Rank: 74
ZWEN.TO Calmar Ratio Rank: 65
ZWEN.TO Martin Ratio Rank: 49

ZSP.TO

ZSP.TO Risk / Return Rank: 47
ZSP.TO Sharpe Ratio Rank: 43
ZSP.TO Sortino Ratio Rank: 42
ZSP.TO Omega Ratio Rank: 48
ZSP.TO Calmar Ratio Rank: 51
ZSP.TO Martin Ratio Rank: 49

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.

ZWEN.TO vs. ZSP.TO - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for BMO Covered Call Energy ETF (ZWEN.TO) and BMO S&P 500 Index ETF (ZSP.TO). 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.

	ZWEN.TO	ZSP.TO	Difference
Sharpe ratio Return per unit of total volatility	1.41	0.73	+0.68
Sortino ratio Return per unit of downside risk	1.78	1.10	+0.68
Omega ratio Gain probability vs. loss probability	1.28	1.17	+0.11
Calmar ratio Return relative to maximum drawdown	1.67	1.17	+0.50
Martin ratio Return relative to average drawdown	4.78	4.37	+0.41
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

ZWEN.TO vs. ZSP.TO - Sharpe Ratio Comparison

The current ZWEN.TO Sharpe Ratio is 1.41, which is higher than the ZSP.TO Sharpe Ratio of 0.73. The chart below compares the historical Sharpe Ratios of ZWEN.TO and ZSP.TO, 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

	ZWEN.TO	ZSP.TO	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.41	0.73	+0.68
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	—	0.92	—
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.88	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.90	1.08	-0.19

Correlation

The correlation between ZWEN.TO and ZSP.TO is 0.16, 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.

Dividends

ZWEN.TO vs. ZSP.TO - Dividend Comparison

ZWEN.TO's dividend yield for the trailing twelve months is around 7.38%, more than ZSP.TO's 0.87% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
ZWEN.TO BMO Covered Call Energy ETF	7.38%	9.53%	9.09%	8.27%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
ZSP.TO BMO S&P 500 Index ETF	0.87%	0.82%	0.94%	1.33%	1.44%	1.15%	1.44%	1.47%	1.63%	1.63%	2.20%	1.53%

Drawdowns

ZWEN.TO vs. ZSP.TO - Drawdown Comparison

The maximum ZWEN.TO drawdown since its inception was -18.75%, smaller than the maximum ZSP.TO drawdown of -26.94%. Use the drawdown chart below to compare losses from any high point for ZWEN.TO and ZSP.TO.

Drawdown Indicators

	ZWEN.TO	ZSP.TO	Difference
Max Drawdown Largest peak-to-trough decline	-18.75%	-26.94%	+8.19%
Max Drawdown (1Y) Largest decline over 1 year	-18.75%	-12.43%	-6.32%
Max Drawdown (5Y) Largest decline over 5 years	—	-22.25%	—
Max Drawdown (10Y) Largest decline over 10 years	—	-26.94%	—
Current Drawdown Current decline from peak	-1.02%	-6.12%	+5.10%
Average Drawdown Average peak-to-trough decline	-4.37%	-3.37%	-1.00%
Ulcer Index Depth and duration of drawdowns from previous peaks	6.54%	3.33%	+3.21%

Volatility

ZWEN.TO vs. ZSP.TO - Volatility Comparison

The current volatility for BMO Covered Call Energy ETF (ZWEN.TO) is 4.12%, while BMO S&P 500 Index ETF (ZSP.TO) has a volatility of 5.16%. This indicates that ZWEN.TO experiences smaller price fluctuations and is considered to be less risky than ZSP.TO based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	ZWEN.TO	ZSP.TO	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.12%	5.16%	-1.04%
Volatility (6M) Calculated over the trailing 6-month period	10.83%	9.35%	+1.48%
Volatility (1Y) Calculated over the trailing 1-year period	21.06%	18.36%	+2.70%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	17.76%	14.97%	+2.79%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	17.76%	16.37%	+1.39%