Generated August 15, 2026.
Overview
IJH and IJR are iShares core index ETFs that together cover the broad U.S. equity market below the large-cap tier. IJH tracks the S&P MidCap 400 Index (mid-cap stocks around $10–$25 billion in market value), while IJR tracks the S&P SmallCap 600 Index (smaller stocks down to roughly $500 million). Both are passively managed, charge minimal fees, and have been running since 2000.
How they differ
The clearest difference is market-cap exposure: IJH owns mid-caps; IJR owns smaller companies. That size difference drives the second distinction — volatility and return sensitivity. IJR's beta of 1.07 means it typically swings harder than the broader market, whereas IJH's beta of 1.0 moves in line with it. Third, IJR yields slightly more (1.15% vs. 0.96%), reflecting smaller companies' tendency to distribute a larger share of earnings as dividends. Both charge nearly identical fees (0.05% and 0.06%, respectively), and both command large asset bases ($126B for IJH, $113B for IJR), so cost and liquidity are not differentiators.
Who each is best for
IJH: Fits investors seeking direct mid-cap exposure with lower volatility than small-cap alternatives, or those building a ladder across market capitalizations who need a stable core holding in the $10–$25 billion range.
IJR: Fits investors comfortable with higher price swings in exchange for exposure to smaller-cap upside potential and a modestly higher income yield, or those looking to tilt toward smaller companies as a tactical allocation.
Key risks to know
- Market-cap segment concentration. IJH and IJR each own companies within a narrow band of market capitalization. Economic or style headwinds that disproportionately affect mid-caps or small-caps can create sustained relative underperformance versus the broader market or versus each other.
- Cyclicality and duration mismatch. Small-cap stocks (IJR) are typically more sensitive to economic cycles and less defensive during downturns, while mid-caps (IJH) occupy middle ground. Investors with shorter time horizons or lower loss tolerance should account for the added volatility in IJR's beta.
- Index methodology risk. Both funds track S&P indexes, which reconstitute quarterly and apply strict eligibility rules. Changes in the indexes can force inflows or outflows that create temporary tracking differences or tax consequences, especially during volatile periods.
- Overlap with broader market funds. Both IJH and IJR's holdings may overlap significantly with large-cap holdings investors already own. Without a full holdings breakdown, verifying actual diversification benefit is necessary.
Bottom line
IJH offers mid-cap exposure with muted volatility and a lower yield; IJR provides smaller-company exposure with higher volatility and a modest income premium. If you want a stable mid-cap sleeve with beta near 1.0, IJH fits the bill; if you're willing to accept higher price swings for small-cap growth potential and an extra 19 basis points of yield, IJR may align better with your risk appetite.
AI-generated analysis for educational purposes only. Verify important details independently; past performance does not guarantee future results.