ZAG.TO vs. ZWEN.TO

Last updated Jun 4, 2026

ZAG.TO (BMO Aggregate Bond Index ETF) and ZWEN.TO (BMO Covered Call Energy ETF) are both exchange-traded funds - ZAG.TO is a Canadian Government Bonds fund tracking the FTSE Canada Universe Bond Index, while ZWEN.TO is a Energy Equities fund actively managed by BMO. ZAG.TO is passively managed, while ZWEN.TO is actively managed. Over the past 3 years, ZAG.TO returned 4.24%/yr vs 19.60%/yr for ZWEN.TO. At a correlation of -0.14, they often move in opposite directions. ZAG.TO charges 0.09%/yr vs 0.88%/yr for ZWEN.TO.

Performance

ZAG.TO vs. ZWEN.TO - Performance Comparison

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

Returns By Period

In the year-to-date period, ZAG.TO achieves a 1.70% return, which is significantly lower than ZWEN.TO's 30.35% return.

ZAG.TO

• 1D: 0.00%
• 1M: 1.75%
• YTD: 1.70%
• 6M: 0.89%
• 1Y: 3.25%
• 3Y*: 4.24%
• 5Y*: 0.76%
• 10Y*: 1.66%

ZWEN.TO

• 1D: 1.16%
• 1M: 0.91%
• YTD: 30.35%
• 6M: 25.89%
• 1Y: 41.26%
• 3Y*: 19.60%
• 5Y*: —
• 10Y*: —

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

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

	2026 (YTD)	2025	2024	2023
ZAG.TO BMO Aggregate Bond Index ETF	1.70%	2.25%	4.48%	3.04%
ZWEN.TO BMO Covered Call Energy ETF	30.35%	6.74%	10.43%	2.68%

Correlation

The correlation between ZAG.TO and ZWEN.TO is -0.28, meaning they tend to move in opposite directions. This is especially valuable for risk management - when one declines, the other has historically tended to hold steady or rise.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	-0.28
Correlation (3Y) Calculated over the trailing 3-year period	-0.12
Correlation (All Time) Calculated using the full available price history since Jan 27, 2023	-0.14

The correlation between ZAG.TO and ZWEN.TO shifts across timeframes, from -0.28 (1 year) to -0.12 (3 years), reflecting how their relationship changes across market environments.

ZAG.TO vs. ZWEN.TO - Sectors Allocation Comparison

Sectors	ZAG.TO	ZWEN.TO
Real Estate	0.0%	-
Basic Materials	-	-
Communication Services	-	-
Consumer Cyclical	-	-
Consumer Defensive	-	-
Energy	-	100.0%
Financial Services	-	-
Healthcare	-	-
Industrials	-	-
Technology	-	-
Utilities	-	-

Return for Risk

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

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

ZAG.TO

ZAG.TO Risk / Return Rank: 21
ZAG.TO Sharpe Ratio Rank: 20
ZAG.TO Sortino Ratio Rank: 19
ZAG.TO Omega Ratio Rank: 20
ZAG.TO Calmar Ratio Rank: 24
ZAG.TO Martin Ratio Rank: 22

ZWEN.TO

ZWEN.TO Risk / Return Rank: 74
ZWEN.TO Sharpe Ratio Rank: 76
ZWEN.TO Sortino Ratio Rank: 69
ZWEN.TO Omega Ratio Rank: 68
ZWEN.TO Calmar Ratio Rank: 82
ZWEN.TO Martin Ratio Rank: 75

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.

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

This table presents a comparison of risk-adjusted performance metrics for BMO Aggregate Bond Index ETF (ZAG.TO) and BMO Covered Call Energy ETF (ZWEN.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.

	ZAG.TO	ZWEN.TO	Difference
Sharpe ratio: Return per unit of total volatility	0.73	2.49	-1.76
Sortino ratio: Return per unit of downside risk	1.02	3.18	-2.16
Omega ratio: Gain probability vs. loss probability	1.13	1.41	-0.28
Calmar ratio: Return relative to maximum drawdown	1.17	4.37	-3.20
Martin ratio: Return relative to average drawdown	2.73	14.22	-11.49
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

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

The current ZAG.TO Sharpe Ratio is 0.73, which is lower than the ZWEN.TO Sharpe Ratio of 2.49. The chart below compares the historical Sharpe Ratios of ZAG.TO and ZWEN.TO, 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

	ZAG.TO	ZWEN.TO	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.73	2.49	-1.76
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.12	—	—
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.23	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.45	0.81	-0.35

Drawdowns

ZAG.TO vs. ZWEN.TO - Drawdown Comparison

The maximum ZAG.TO drawdown since its inception was -18.03%, roughly equal to the maximum ZWEN.TO drawdown of -18.75%. Use the drawdown chart below to compare losses from any high point for ZAG.TO and ZWEN.TO.

Drawdown Indicators

	ZAG.TO	ZWEN.TO	Difference
Max Drawdown Largest peak-to-trough decline	-18.03%	-18.75%	+0.72%
Max Drawdown (1Y) Largest decline over 1 year	-2.79%	-9.50%	+6.71%
Max Drawdown (3Y) Largest decline over 3 years	-5.42%	-18.75%	+13.33%
Max Drawdown (5Y) Largest decline over 5 years	-15.77%	—	—
Max Drawdown (10Y) Largest decline over 10 years	-18.03%	—	—
Current Drawdown Current decline from peak	-1.09%	-2.09%	+1.00%
Average Drawdown Average peak-to-trough decline	-3.54%	-4.38%	+0.84%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.19%	2.91%	-1.72%

Volatility

ZAG.TO vs. ZWEN.TO - Volatility Comparison

The current volatility for BMO Aggregate Bond Index ETF (ZAG.TO) is 1.68%, while BMO Covered Call Energy ETF (ZWEN.TO) has a volatility of 7.08%. This indicates that ZAG.TO experiences smaller price fluctuations and is considered to be less risky than ZWEN.TO based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	ZAG.TO	ZWEN.TO	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.68%	7.08%	-5.40%
Volatility (6M) Calculated over the trailing 6-month period	3.43%	13.73%	-10.30%
Volatility (1Y) Calculated over the trailing 1-year period	4.46%	16.69%	-12.23%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	6.58%	18.11%	-11.53%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	7.11%	18.11%	-11.00%

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

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

Dividends

ZAG.TO vs. ZWEN.TO - Dividend Comparison

ZAG.TO's dividend yield for the trailing twelve months is around 3.42%, less than ZWEN.TO's 7.56% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
ZAG.TO BMO Aggregate Bond Index ETF	3.42%	3.48%	3.44%	3.47%	3.56%	3.04%	2.88%	3.03%	2.92%	2.95%	3.07%	3.13%
ZWEN.TO BMO Covered Call Energy ETF	7.56%	9.53%	9.09%	8.27%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both ZAG.TO and ZWEN.TO in my portfolio?

ZAG.TO and ZWEN.TO have a correlation of -0.28, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, ZAG.TO or ZWEN.TO?

On fees, ZAG.TO is cheaper at 0.09% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, ZAG.TO or ZWEN.TO?

ZAG.TO is cheaper with a 0.09% expense ratio, compared with 0.88% for ZWEN.TO.

What is the main difference between ZAG.TO and ZWEN.TO?

ZAG.TO is categorized as Canadian Government Bonds, while ZWEN.TO is Energy Equities. Their fees differ too: 0.09% for ZAG.TO and 0.88% for ZWEN.TO.