CBO.TO vs. ZSB.TO

Last updated Jun 4, 2026

CBO.TO (iShares 1-5 Year Laddered Corporate Bond Index ETF) and ZSB.TO (BMO Short-Term Bond Index ETF) are both Canadian Government Bonds funds - CBO.TO tracks the Morningstar Can 1-5Y Core Bd GR CAD while ZSB.TO tracks the FTSE Canada Short Term Overall Bond Index. Both are passively managed. Over the past 5 years, CBO.TO returned 2.60%/yr vs 2.01%/yr for ZSB.TO. A 0.51 correlation means they provide meaningful diversification when combined. CBO.TO charges 0.28%/yr vs 0.10%/yr for ZSB.TO.

Performance

CBO.TO vs. ZSB.TO - Performance Comparison

The chart below illustrates the hypothetical performance of a CA$10,000 investment in iShares 1-5 Year Laddered Corporate Bond Index ETF (CBO.TO) and BMO Short-Term Bond Index ETF (ZSB.TO). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, CBO.TO achieves a 1.02% return, which is significantly higher than ZSB.TO's 0.96% return.

CBO.TO

• 1D: -0.05%
• 1M: 0.94%
• YTD: 1.02%
• 6M: 1.01%
• 1Y: 3.73%
• 3Y*: 5.68%
• 5Y*: 2.60%
• 10Y*: 2.50%

ZSB.TO

• 1D: -0.04%
• 1M: 0.83%
• YTD: 0.96%
• 6M: 0.81%
• 1Y: 2.83%
• 3Y*: 4.71%
• 5Y*: 2.01%
• 10Y*: —

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

CBO.TO vs. ZSB.TO - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018
CBO.TO iShares 1-5 Year Laddered Corporate Bond Index ETF	1.02%	4.69%	6.82%	6.47%	-4.89%	-1.04%	5.84%	4.54%	1.31%
ZSB.TO BMO Short-Term Bond Index ETF	0.96%	3.77%	5.55%	5.05%	-4.08%	-1.20%	5.13%	2.95%	1.69%

Correlation

The correlation between CBO.TO and ZSB.TO is 0.61, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.61
Correlation (3Y) Calculated over the trailing 3-year period	0.62
Correlation (5Y) Calculated over the trailing 5-year period	0.63
Correlation (All Time) Calculated using the full available price history since Mar 8, 2018	0.51

The correlation between CBO.TO and ZSB.TO shifts across timeframes, from 0.51 (all time) to 0.63 (5 years), reflecting how their relationship changes across market environments.

Return for Risk

CBO.TO vs. ZSB.TO — Risk / Return Rank

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

CBO.TO

CBO.TO Risk / Return Rank: 47
CBO.TO Sharpe Ratio Rank: 45
CBO.TO Sortino Ratio Rank: 46
CBO.TO Omega Ratio Rank: 45
CBO.TO Calmar Ratio Rank: 47
CBO.TO Martin Ratio Rank: 51

ZSB.TO

ZSB.TO Risk / Return Rank: 41
ZSB.TO Sharpe Ratio Rank: 41
ZSB.TO Sortino Ratio Rank: 39
ZSB.TO Omega Ratio Rank: 46
ZSB.TO Calmar Ratio Rank: 39
ZSB.TO Martin Ratio Rank: 40

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.

CBO.TO vs. ZSB.TO - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for iShares 1-5 Year Laddered Corporate Bond Index ETF (CBO.TO) and BMO Short-Term Bond Index ETF (ZSB.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.

	CBO.TO	ZSB.TO	Difference
Sharpe ratio: Return per unit of total volatility	1.57	1.45	+0.12
Sortino ratio: Return per unit of downside risk	2.29	2.02	+0.27
Omega ratio: Gain probability vs. loss probability	1.29	1.29	-0.01
Calmar ratio: Return relative to maximum drawdown	2.32	1.95	+0.38
Martin ratio: Return relative to average drawdown	8.72	6.41	+2.31
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

CBO.TO vs. ZSB.TO - Sharpe Ratio Comparison

The current CBO.TO Sharpe Ratio is 1.57, which is comparable to the ZSB.TO Sharpe Ratio of 1.45. The chart below compares the historical Sharpe Ratios of CBO.TO and ZSB.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

	CBO.TO	ZSB.TO	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.57	1.45	+0.12
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.88	0.74	+0.14
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.70	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.94	0.90	+0.04

Drawdowns

CBO.TO vs. ZSB.TO - Drawdown Comparison

The maximum CBO.TO drawdown since its inception was -11.67%, which is greater than ZSB.TO's maximum drawdown of -7.49%. Use the drawdown chart below to compare losses from any high point for CBO.TO and ZSB.TO.

Drawdown Indicators

	CBO.TO	ZSB.TO	Difference
Max Drawdown Largest peak-to-trough decline	-11.67%	-7.49%	-4.18%
Max Drawdown (1Y) Largest decline over 1 year	-1.61%	-1.46%	-0.15%
Max Drawdown (3Y) Largest decline over 3 years	-1.61%	-1.46%	-0.15%
Max Drawdown (5Y) Largest decline over 5 years	-8.22%	-7.12%	-1.10%
Max Drawdown (10Y) Largest decline over 10 years	-11.67%	—	—
Current Drawdown Current decline from peak	-0.05%	-0.21%	+0.16%
Average Drawdown Average peak-to-trough decline	-0.96%	-1.50%	+0.54%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.43%	0.44%	-0.01%

Volatility

CBO.TO vs. ZSB.TO - Volatility Comparison

iShares 1-5 Year Laddered Corporate Bond Index ETF (CBO.TO) and BMO Short-Term Bond Index ETF (ZSB.TO) have volatilities of 0.83% and 0.81%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	CBO.TO	ZSB.TO	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.83%	0.81%	+0.02%
Volatility (6M) Calculated over the trailing 6-month period	1.86%	1.62%	+0.24%
Volatility (1Y) Calculated over the trailing 1-year period	2.39%	1.95%	+0.44%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	2.97%	2.74%	+0.23%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	3.59%	2.63%	+0.96%

CBO.TO vs. ZSB.TO - Expense Ratio Comparison

CBO.TO has a 0.28% expense ratio, which is higher than ZSB.TO's 0.10% expense ratio.

Dividends

CBO.TO vs. ZSB.TO - Dividend Comparison

CBO.TO's dividend yield for the trailing twelve months is around 3.45%, more than ZSB.TO's 3.18% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
CBO.TO iShares 1-5 Year Laddered Corporate Bond Index ETF	3.45%	3.37%	3.09%	2.81%	2.67%	2.55%	2.55%	2.65%	2.74%	2.80%	3.03%	3.86%
ZSB.TO BMO Short-Term Bond Index ETF	3.18%	3.16%	2.91%	2.54%	2.60%	2.43%	2.34%	2.40%	2.42%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both CBO.TO and ZSB.TO in my portfolio?

CBO.TO and ZSB.TO have a correlation of 0.61, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, CBO.TO or ZSB.TO?

On fees, ZSB.TO is cheaper at 0.10% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, CBO.TO or ZSB.TO?

ZSB.TO is cheaper with a 0.10% expense ratio, compared with 0.28% for CBO.TO.

What is the main difference between CBO.TO and ZSB.TO?

CBO.TO tracks Morningstar Can 1-5Y Core Bd GR CAD, while ZSB.TO tracks FTSE Canada Short Term Overall Bond Index. They also come from different issuers: iShares and BMO. Their fees differ too: 0.28% for CBO.TO and 0.10% for ZSB.TO.