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
603 positions appear in both funds. Buying equal dollars of IJR and SPSM would leave roughly 98.3% of each dollar exposed to the same underlying securities.
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
603 shared in total| # | Holding | In IJR | In SPSM | Overlap |
|---|---|---|---|---|
| 1 | Eastman Chemical Company | 0.57% | 0.57% | 0.57% |
| 2 | Element Solutions Inc | 0.51% | 0.51% | 0.51% |
| 3 | Primoris Services Corp. | 0.50% | 0.51% | 0.50% |
| 4 | Viavi Solutions Inc | 0.50% | 0.50% | 0.50% |
| 5 | Argan Inc | 0.49% | 0.49% | 0.49% |
| 6 | Formfactor Inc | 0.49% | 0.49% | 0.49% |
| 7 | LKQ Corporation | 0.49% | 0.49% | 0.49% |
| 8 | ESCO Technologies Inc. | 0.48% | 0.48% | 0.48% |
| 9 | Match Group Inc | 0.47% | 0.47% | 0.47% |
| 10 | Celanese Corporation | 0.47% | 0.47% | 0.47% |
| 11 | Semtech Corporation | 0.46% | 0.47% | 0.46% |
| 12 | Armstrong World Industries, Inc. | 0.46% | 0.46% | 0.46% |
Only in IJR
2 total- OMNIAB INC 0.00%
- OMNIAB INC 0.00%
Only in SPSM
2 total- State Street Global Advisors 0.03%
- Tobira Therapeutics Inc 0.00%
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.