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Tortoise Global Water Fund (TBLU) Sharpe Ratio: -0.05

ETF · Currency in USD · Last updated Jun 3, 2026

TBLU is a passive ETF by Tortoise tracking the investment results of the Tortoise Global Water ESG Net Total Return Index. TBLU launched on Feb 14, 2017 and has a 0.40% expense ratio.

TBLU's Sharpe Ratio of -0.05 indicates that for each unit of volatility, it generates -0.05 units of excess return above the risk-free rate. The ratio is calculated using historical daily returns over the past 12 months (as of Jun 3, 2026).

Sharpe uses total volatility (standard deviation) which includes both upside and downside price movements, making it useful for comparing risk-adjusted returns across different assets.

TBLU Sharpe Ratio Rank

TBLU Sharpe Ratio Rank: 8.18
Concerning

TBLU ranks above 8.1% of all investments in our database based on Sharpe Ratio over the past 12 months, indicating weak returns relative to total risk taken. Securities are ranked from 0 (worst) to 100 (best).

What moves the rank

  • Strong returns with low total volatility → Higher rank
  • High volatility (both upside and downside) → Lower rank
  • Consistent returns → Higher rank than volatile returns of same magnitude
  • Sharp drawdowns increase volatility → Lower rank

What you can do with this information

  • Weak risk-adjusted returns relative to category peers
  • Evaluate whether this holding aligns with your risk-return objectives
  • Consider reducing exposure or re-evaluating position size
  • Review higher-ranked alternatives in the same category

TBLU Sharpe Ratio Market Positioning

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

  • Red zone (bottom 25%): 0.91 or lower
  • Yellow zone (middle 50%): 0.91 to 2.51
  • Green zone (top 25%): 2.51 or higher
  • Top 1%: 7.86+
  • Median: 1.78 — half of all investments score higher

How it compares to other similar ETFs

The table compares Tortoise Global Water Fund's Sharpe Ratio with other ETFs in the Water Equities, ESG category across multiple time periods, showing how TBLU'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 3, 2026.

SymbolName1Y Sharpe Ratio5Y Sharpe Ratio10Y Sharpe RatioAll Time Sharpe Ratio
PULTPutnam ESG Ultra Short ETF6.72
EMCSXtrackers MSCI Emerging Markets Climate Selection ETF3.03
EFIVState Street SPDR S&P 500 ESG ETF2.75
SNPEXtrackers S&P 500 ESG ETF2.68
PRVSParnassus Value Select ETF2.66
ESGUiShares ESG Aware MSCI USA ETF2.46
KLMNInvesco MSCI North America Climate ETF2.43
CBSEClough Select Equity ETF2.40
XVViShares ESG Screened S&P 500 ETF2.28
ESGVVanguard ESG U.S. Stock ETF2.27
TBLUTortoise Global Water Fund-0.05

S&P 500 Index

How to choose period

Historical Sharpe Ratio

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

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

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Sharpe Ratio Calculator

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