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ZST.TO's Sortino Ratio of 1.64 indicates that for each unit of downside volatility, it generates 1.64 units of excess return. The ratio is calculated using historical daily returns over the past 12 months (as of Jun 4, 2026).

Unlike other measures, Sortino only focuses on downside volatility (losses), making it particularly useful for investors more concerned about protecting against drawdowns than overall price swings.

ZST.TO Sortino Ratio Rank


ZST.TO Sortino Ratio Rank: 29.730
Below Average

ZST.TO ranks above 29.7% of all investments in our database based on Sortino Ratio over the past 12 months, indicating below-average returns relative to downside risk taken. Securities are ranked from 0 (worst) to 100 (best).

What moves the rank

  • Strong returns with minimal downside volatility → Higher rank
  • Severe or frequent drawdowns → Lower rank
  • Upside volatility → No impact (Sortino doesn't penalize upside swings)

What you can do with this information

  • Returns may not adequately compensate for downside risk taken
  • Consider smaller allocation given below-average risk-adjusted profile
  • Explore higher-ranked investments with better downside protection
  • Assess whether downside exposure aligns with your portfolio goals

ZST.TO Sortino Ratio Market Positioning

The chart shows ZST.TO's Sortino Ratio relative to all ETFs on our platform, with color zones indicating percentile rankings. Higher ratios indicate better downside-adjusted returns.


  • Red zone (bottom 25%): 1.30 or lower
  • Yellow zone (middle 50%): 1.30 to 3.33
  • Green zone (top 25%): 3.33 or higher
  • Top 1%: 13.04+
  • Median: 2.39 — half of all investments score higher

How it compares to other similar ETFs

The table compares BMO Ultra Short-Term Bond ETF's Sortino Ratio with other ETFs in the Canadian Government Bonds, Ultrashort Bond category across multiple time periods, showing how ZST.TO's risk-adjusted performance compares to similar funds.

Data shows 1-, 5-, and 10-year periods, plus each fund's all-time average, as of Jun 4, 2026.


SymbolName1Y Sortino Ratio5Y Sortino Ratio10Y Sortino RatioAll Time Sortino Ratio
CBIL.TOGlobal X 0-3 Month T-Bill ETF23.59
UBIL-U.TOGlobal X 0-3 Month U.S. T-Bill ETF USD15.05
VVSG.TOVanguard Canadian Ultra-Short Government Bond Index ETF10.99
TCSH.TOTD Cash Management ETF10.75
MNU-U.TOPurpose USD Cash Management ETF9.86
XFR.TOiShares Floating Rate Index ETF6.98
HFR.TOGlobal X Active Ultra-Short Term Investment Grade Bond ETF5.15
ZBI.TOBMO Canadian Bank Income Index ETF3.84
XSHG.TOiShares ESG Advanced 1-5 Year Canadian Corporate Bond Index ETF2.84
ZCS.TOBMO Short Corporate Bond Index ETF2.63
ZST.TOBMO Ultra Short-Term Bond ETF1.64

S&P 500 Index

How to choose period

Historical Sortino Ratio

The chart shows ZST.TO's rolling Sortino ratio over time compared to your chosen benchmark. Rising trends indicate improving returns relative to downside risk, while declining trends may signal deteriorating risk-adjusted performance or increased volatility during market stress. Use multiple timeframes to distinguish short-term fluctuations from long-term patterns.

Identify market cycles by observing when ZST.TO consistently outperforms (line above benchmark), underperforms (below benchmark), or aligns with the benchmark.


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