ETF comparison
IJR vs SPSM
Both US Small Cap.
iShares Core S&P Small-Cap ETF · State Street SPDR Portfolio S&P 600 Small Cap ETF
Holdings overlap
601 positions appear in both funds. Buying equal dollars of IJR and SPSM would leave roughly 97.6% 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
SPSM is 3 bps cheaper than IJR. On a $100,000 position that's about $30/yr more in fees for IJR.
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 SPSM.
Top shared holdings
601 shared in total| # | Holding | In IJR | In SPSM | Overlap |
|---|---|---|---|---|
| 1 | FORMFACTOR INC | 0.67% | 0.68% | 0.67% |
| 2 | VIASAT INC | 0.66% | 0.66% | 0.66% |
| 3 | MOLINA HEALTHCARE INC | 0.64% | 0.65% | 0.64% |
| 4 | ARGAN INC | 0.60% | 0.60% | 0.60% |
| 5 | BRIGHTSPRING HEALTH SERVICES INC | 0.60% | 0.60% | 0.60% |
| 6 | ELEMENT SOLUTIONS INC | 0.59% | 0.59% | 0.59% |
| 7 | MAXLINEAR INC | 0.58% | 0.58% | 0.58% |
| 8 | KRYSTAL BIOTECH INC | 0.53% | 0.53% | 0.53% |
| 9 | ESCO TECHNOLOGIES INC | 0.49% | 0.49% | 0.49% |
| 10 | MATCH GROUP INC | 0.48% | 0.48% | 0.48% |
| 11 | ALKERMES PLC | 0.47% | 0.47% | 0.47% |
| 12 | EVERUS CONSTRUCTION GROUP INC | 0.46% | 0.46% | 0.46% |
Only in IJR
2 total- OMNIAB INC 0.00%
- OMNIAB INC 0.00%
Only in SPSM
3 total- F&G Annuities & Life Inc 0.05%
- CONTRA APELLIS PHARMAC 0.00%
- Tobira Therapeutics Inc 0.00%
Related comparisons
More comparisons with IJR
- IJR vs VIOO · Vanguard S&P Small-Cap 600 Index Fund ETF Shares 90.2%
- IJR vs IJS · iShares S&P Small-Cap 600 Value ETF 62.6%
- IJR vs VIOG · Vanguard S&P Small-Cap 600 Growth Index Fund ETF Shares 60.5%
- IJR vs IJT · iShares S&P Small-Cap 600 Growth ETF 60.2%
- IJR vs VIOV · Vanguard S&P Small-Cap 600 Value Index Fund ETF Shares 60.2%
- IJR vs BBSC · JPMorgan BetaBuilders U.S. Small Cap Equity ETF 51.9%
More comparisons with SPSM
- SPSM vs VIOO · Vanguard S&P Small-Cap 600 Index Fund ETF Shares 91.4%
- SPSM vs IJS · iShares S&P Small-Cap 600 Value ETF 63.6%
- SPSM vs VIOG · Vanguard S&P Small-Cap 600 Growth Index Fund ETF Shares 61.3%
- SPSM vs VIOV · Vanguard S&P Small-Cap 600 Value Index Fund ETF Shares 61.1%
- SPSM vs IJT · iShares S&P Small-Cap 600 Growth ETF 60.5%
- SPSM vs BBSC · JPMorgan BetaBuilders U.S. Small Cap Equity ETF 52.4%
Percentages are holdings overlap with the named fund.
Open IJR or SPSM 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.