Convexity Maven

June 9, 2026

Looking Under the ETF Hood

Primer ExplainerEquitiesRates Govt BondsCommoditiesOther

This report examines the structural mechanics and risks associated with Exchange Traded Funds (ETFs), warning investors about implementation pitfalls like slippage, leverage decay, and return-of-capital distributions. It emphasizes that due diligence must go beyond expense ratios to understand how an ETF manages its underlying assets.

Key Takeaways

  • 1.ETF suitability evaluation requires examining creation/redemption processes to avoid hidden slippage costs.
  • 2.Daily percentage return (leveraged) ETFs contain negative convexity profiles that erode long-term value.
  • 3.High distribution yields in ETFs may signal 'return of capital' rather than economic yield, necessitating closer inspection of holdings.

Table of Contents

  • Modern Pooled Investing
  • Brief History of ETFs
  • A Tour of the ETF Sausage Factory
  • Passive versus Active Management
  • Leverage: Linear versus Daily Percentage Return
  • Return of Capital
  • Fund of Funds
  • Opaque Fees
  • Underlying Asset Liquidity
  • Strategy Drift
  • Summary
  • Macro-economic Comments

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Authors

Harley Bassman

Securities

SPYVOOARKK

Themes

ETF Transparency and MechanicsInvestment Risk ManagementMacro-fiscal outlook

Regions

GlobalUnited States