ETF comparison
IJR vs SPY
US Small Cap vs US Large Cap.
iShares Core S&P Small-Cap ETF · State Street SPDR S&P 500 ETF Trust
Holdings overlap
0 positions appear in both funds. Buying equal dollars of IJR and SPY would leave roughly 0.0% of each dollar exposed to the same underlying securities.
Unmatched is the part of a fund's weight the other fund doesn't match: names only it holds, plus any extra weight it puts in names both funds hold.
Side by side
Sub-score comparison
Tracking quality isn't part of the composite — see what we don't score for why.
Cost difference
IJR is 3 bps cheaper than SPY. On a $100,000 position that's about $34/yr more in fees for SPY.
Fee figure is the annual expense charged on $100,000. To see how the gap compounds over a multi-decade holding period, open the cost calculator pre-filled with IJR vs SPY.
Top shared holdings
0 shared in totalNo shared holdings between these funds.
Only in IJR
603 total- FORMFACTOR INC 0.67%
- VIASAT INC 0.66%
- MOLINA HEALTHCARE INC 0.64%
- ARGAN INC 0.60%
- BRIGHTSPRING HEALTH SERVICES INC 0.60%
- ELEMENT SOLUTIONS INC 0.59%
- MAXLINEAR INC 0.58%
- KRYSTAL BIOTECH INC 0.53%
- ESCO TECHNOLOGIES INC 0.49%
- MATCH GROUP INC 0.48%
Only in SPY
505 total- NVIDIA CORP 8.50%
- APPLE INC 7.32%
- MICROSOFT CORP 5.77%
- AMAZON.COM INC 3.71%
- ALPHABET INC CL A 3.03%
- BROADCOM INC 2.54%
- ALPHABET INC CL C 2.43%
- META PLATFORMS INC CLASS A 2.41%
- MICRON TECHNOLOGY INC 1.82%
- TESLA INC 1.57%
Related comparisons
More comparisons with IJR
- IJR vs SPYD · State Street SPDR Portfolio S&P 500 High Dividend ETF 0.0%
- IJR vs SPYG · State Street SPDR Portfolio S&P 500 Growth ETF 0.0%
- IJR vs SPYM · State Street SPDR Portfolio S&P 500 ETF 0.0%
- IJR vs SPYV · State Street SPDR Portfolio S&P 500 Value ETF 0.0%
- IJR vs SUSA · iShares ESG Optimized MSCI USA ETF 0.0%
- IJR vs USMV · iShares MSCI USA Min Vol Factor ETF 0.0%
More comparisons with SPY
- SPY vs IJS · iShares S&P Small-Cap 600 Value ETF 0.0%
- SPY vs IJT · iShares S&P Small-Cap 600 Growth ETF 0.0%
- SPY vs IMTM · iShares MSCI Intl Momentum Factor ETF 0.0%
- SPY vs INTF · iShares International Equity Factor ETF 0.0%
- SPY vs IQLT · iShares MSCI Intl Quality Factor ETF 0.0%
- SPY vs IWM · iShares Russell 2000 ETF 0.0%
Percentages are holdings overlap with the named fund.
Open IJR or SPY at a brokerage
Both funds trade commission-free at major US brokerages.
Affiliate links — opening an account through these earns PlainIndex a one-time referral. Scoring is computed before any affiliate consideration; see our methodology and funding disclosure.
Holdings overlap is the sum of min(weight_a, weight_b) over positions
matched on ISIN (CUSIP fallback). Methodology: see
/methodology/.
Comparing two funds doesn't endorse swapping one for the other. Tax-lot history, account type, and personal goals matter — PlainIndex publishes data and methodology, not investment advice.