WisdomTree U.S. MidCap Fund (EZM) seeks to track the WisdomTree U.S. MidCap Index, which measures the performance of mid-capitalization U.S. companies weighted by their earnings rather than market capitalization. This fundamentally-weighted equity ETF provides exposure to profitable mid-cap stocks typically ranging from $2-10 billion in market value.
How It Works
EZM uses a fundamentally-weighted methodology that allocates holdings based on company earnings over the past four quarters, giving higher weights to more profitable companies rather than largest by market cap. The fund rebalances annually each December to reflect updated earnings data and index changes. This passive approach typically holds 300-400 mid-cap stocks, with sector allocations determined by the collective earnings of constituent companies rather than arbitrary caps.
Key Features
- Earnings-weighted approach potentially reduces allocation to overvalued stocks compared to traditional market-cap weighted mid-cap ETFs
- Focuses exclusively on profitable companies by requiring positive cumulative earnings over trailing four quarters for inclusion
- Zero expense ratio makes it one of the most cost-effective ways to access fundamentally-weighted mid-cap exposure
Risks
- This ETF can lose value when mid-cap stocks underperform, potentially declining 35-45% during severe market downturns as mid-caps are more volatile than large-caps
- Earnings-weighting creates sector concentration risk, with overweights to cyclical industries during peak earnings cycles that may reverse during economic slowdowns
- Mid-cap stocks face liquidity constraints during market stress, potentially causing wider bid-ask spreads and tracking errors versus the underlying index
Who Should Own This
Best suited as a satellite holding (10-20% of equity allocation) for investors with 3-7 year time horizons seeking mid-cap exposure with a value tilt. Medium-to-high risk tolerance required due to mid-cap volatility. Appeals to investors who prefer fundamental weighting over market-cap weighting and want profitable company exposure.