Generated October 17, 2026.
Overview
IJH and VO are both mid-cap equity ETFs tracking different indexes of U.S. companies valued between roughly $2 billion and $10 billion in market capitalization. The key difference is their underlying index construction: the S&P MidCap 400 uses market-cap weighting, whereas Morningstar's methodology applies a blended approach that incorporates valuation and profitability metrics alongside size, which shifts the composition and risk profile of each fund.
How they differ
IJH tracks a pure market-cap-weighted index of 400 mid-cap stocks, while VO's Morningstar index applies additional filters for valuation and quality, resulting in meaningfully different holdings. On cost, Vanguard's 0.03% beats iShares' 0.05% by 0.02%, a small but meaningful spread over decades. VO's beta of 0.94 sits slightly below 1.0, implying modest downside cushion relative to market moves, though both funds carry mid-cap volatility.
Who each is best for
IJH: Fits investors who want pure, transparent market-cap exposure to the 400 largest mid-cap stocks without tilts toward value, quality, or dividend yield—ideal for those building a core mid-cap sleeve using a straightforward index approach.
VO: Designed for investors seeking mid-cap exposure with an implicit tilt toward companies exhibiting both valuation attractiveness and operational quality, paired with a lower expense ratio and historically higher dividend income.
Key risks to know
- Index overlap: Because both funds target the same market segment, holdings likely overlap substantially. Verify the specific composition to understand concentration in shared positions and how divergent their actual allocations truly are.
- Mid-cap volatility: Both funds carry a beta near 1.0, meaning they will amplify broad market declines by roughly the same magnitude. Mid-cap stocks are more sensitive to economic cycles and credit conditions than large-cap peers, and both funds lack the relative stability of larger companies.
- Morningstar methodology shift risk: VO's index applies valuations and profitability scoring that evolve as market conditions change. A prolonged shift toward growth or rising valuations could cause the index to exclude names it previously held, introducing style drift relative to a static market-cap approach.
Bottom line
If you want unmodified market-cap exposure to mid-cap stocks with lower fees, VO stands out. If you prefer a simpler, more transparent index that doesn't apply quality or valuation overlays, IJH aligns better with that preference. The yield gap reflects VO's index methodology rather than income-focused holdings, so neither fund should be viewed as a dividend vehicle. Past performance does not guarantee future results.
AI-generated analysis for educational purposes only. Verify important details independently; past performance does not guarantee future results.
