ZWEN.TO vs. OILY.TO

Last updated Apr 1, 2026

Compare and contrast key facts about BMO Covered Call Energy ETF (ZWEN.TO) and Evolve Canadian Energy Enhanced Yield Index Fund ETF (OILY.TO).

ZWEN.TO and OILY.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. OILY.TO is a passively managed fund by Evolve that tracks the performance of the Solactive Canada Energy Top 10 Index. It was launched on Mar 26, 2025.

Performance

ZWEN.TO vs. OILY.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 Evolve Canadian Energy Enhanced Yield Index Fund ETF (OILY.TO). The values are adjusted to include any dividend payments, if applicable.

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

	2026 (YTD)	2025
ZWEN.TO BMO Covered Call Energy ETF	31.77%	-1.20%
OILY.TO Evolve Canadian Energy Enhanced Yield Index Fund ETF	30.30%	3.96%

Returns By Period

The year-to-date returns for both stocks are quite close, with ZWEN.TO having a 31.77% return and OILY.TO slightly lower at 30.30%.

ZWEN.TO

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

OILY.TO

• 1D: -2.08%
• 1M: 9.89%
• YTD: 30.30%
• 6M: 31.31%
• 1Y: 36.97%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

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

ZWEN.TO has a 0.88% expense ratio, which is higher than OILY.TO's 0.60% expense ratio.

ZWEN.TO

BMO Covered Call Energy ETF

OILY.TO

Evolve Canadian Energy Enhanced Yield Index Fund ETF

Return for Risk

ZWEN.TO vs. OILY.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

OILY.TO

OILY.TO Risk / Return Rank: 73
OILY.TO Sharpe Ratio Rank: 80
OILY.TO Sortino Ratio Rank: 76
OILY.TO Omega Ratio Rank: 81
OILY.TO Calmar Ratio Rank: 66
OILY.TO Martin Ratio Rank: 61

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. OILY.TO - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for BMO Covered Call Energy ETF (ZWEN.TO) and Evolve Canadian Energy Enhanced Yield Index Fund ETF (OILY.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	OILY.TO	Difference
Sharpe ratio Return per unit of total volatility	1.41	1.51	-0.10
Sortino ratio Return per unit of downside risk	1.78	1.94	-0.15
Omega ratio Gain probability vs. loss probability	1.28	1.32	-0.03
Calmar ratio Return relative to maximum drawdown	1.67	1.68	-0.01
Martin ratio Return relative to average drawdown	4.78	6.06	-1.28
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. OILY.TO - Sharpe Ratio Comparison

The current ZWEN.TO Sharpe Ratio is 1.41, which is comparable to the OILY.TO Sharpe Ratio of 1.51. The chart below compares the historical Sharpe Ratios of ZWEN.TO and OILY.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	OILY.TO	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.41	1.51	-0.10
Sharpe Ratio (All Time) Calculated using the full available price history	0.90	1.43	-0.54

Correlation

The correlation between ZWEN.TO and OILY.TO is 0.69, which is considered to be moderate. This suggests that the two assets have some degree of positive relationship in their price movements. Moderate correlation can be acceptable for portfolio diversification, offering a balance between risk and potential returns.

Dividends

ZWEN.TO vs. OILY.TO - Dividend Comparison

ZWEN.TO's dividend yield for the trailing twelve months is around 7.38%, less than OILY.TO's 11.26% yield.

	TTM	2025	2024	2023
ZWEN.TO BMO Covered Call Energy ETF	7.38%	9.53%	9.09%	8.27%
OILY.TO Evolve Canadian Energy Enhanced Yield Index Fund ETF	11.26%	11.50%	0.00%	0.00%

Drawdowns

ZWEN.TO vs. OILY.TO - Drawdown Comparison

The maximum ZWEN.TO drawdown since its inception was -18.75%, smaller than the maximum OILY.TO drawdown of -22.70%. Use the drawdown chart below to compare losses from any high point for ZWEN.TO and OILY.TO.

Drawdown Indicators

	ZWEN.TO	OILY.TO	Difference
Max Drawdown Largest peak-to-trough decline	-18.75%	-22.70%	+3.95%
Max Drawdown (1Y) Largest decline over 1 year	-18.75%	-22.70%	+3.95%
Current Drawdown Current decline from peak	-1.02%	-2.40%	+1.38%
Average Drawdown Average peak-to-trough decline	-4.37%	-4.52%	+0.15%
Ulcer Index Depth and duration of drawdowns from previous peaks	6.54%	6.29%	+0.25%

Volatility

ZWEN.TO vs. OILY.TO - Volatility Comparison

The current volatility for BMO Covered Call Energy ETF (ZWEN.TO) is 4.12%, while Evolve Canadian Energy Enhanced Yield Index Fund ETF (OILY.TO) has a volatility of 4.79%. This indicates that ZWEN.TO experiences smaller price fluctuations and is considered to be less risky than OILY.TO based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	ZWEN.TO	OILY.TO	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.12%	4.79%	-0.67%
Volatility (6M) Calculated over the trailing 6-month period	10.83%	13.41%	-2.58%
Volatility (1Y) Calculated over the trailing 1-year period	21.06%	24.63%	-3.57%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	17.76%	24.66%	-6.90%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	17.76%	24.66%	-6.90%