SPSM vs IJR: Holdings Overlap
SPSMState Street® SPDR® Portfolio S&P 600™ Small Cap ETF
State Street (SPDR) · 604 holdings · $17.3B · as of 2026-08-06
IJRiShares Core S&P Small-Cap ETF
iShares · 605 holdings · $113.4B · as of 2026-03-31
Holdings snapshots are 128 days apart (SPSM: 2026-08-06, IJR: 2026-03-31). Weights and index membership change between snapshots, so the true current overlap is typically higher than shown. For funds tracking the same index, the gap can be 5–15 points.
How similar are SPSM and IJR?
State Street® SPDR® Portfolio S&P 600™ Small Cap ETF (SPSM, by State Street (SPDR)) holds 604 positions; iShares Core S&P Small-Cap ETF (IJR, by iShares) holds 605. They have 558 holdings in common, and by portfolio weight the two funds are 83.2% identical. In practical terms the pair is heavily overlapping, with largely the same stocks driving both funds.
- Overlap by Weight
- 83.2%Sum of the smaller weight of each shared holding
- Shared Holdings
- 558SPSM holds 604 · IJR holds 605
- Weight in Shared Holdings
- SPSM 91%·IJR 91%Share of each fund's weight in stocks both funds own
Based on each fund's latest official holdings. How is this calculated?
What makes each fund different
Only in SPSM
46 of 604 positions (8.4% of the fund) are not held by IJR. Showing the top 30 by weight.
Sector Breakdown
| Sector | SPSM | IJR |
|---|---|---|
| Financials | 19.0% | 17.4% |
| Industrials | 17.4% | 17.1% |
| Consumer Discretionary | 13.9% | 13.2% |
| Information Technology | 12.8% | 12.7% |
| Health Care | 10.6% | 11.1% |
| Other Sectors | 25.1% | 26.0% |
| Unclassified | 0.9% | 0.9% |
Share of each fund's portfolio weight by GICS-style sector, compiled from issuer fund data and our own classification of the holdings, not the issuers' published sector charts. “Unclassified” is weight we could not classify (1% of SPSM, 1% of IJR).
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| SPSM | +2.4% | +24.5% | +36.5% | +14.6% | +7.7% | +10.9% | 1.36% |
| IJR | +2.4% | +24.5% | +36.4% | +14.5% | +7.7% | +10.9% | 1.10% |
Total returns including dividends, from adjusted daily closes as of 2026-08-07. 3Y/5Y/10Y are annualized. Yield is trailing-12-month distributions over the last close. Past performance does not predict future results.
Project the growth of $10,000 in SPSM vs IJR →
Shared Holdings(558)
The top 10 shared positions account for 5% of the overlap, led by FORM, ESI and MTCH.
 FORMFormfactor Inc COM | 0.49% | 0.49% | 0.49% |
|---|---|---|---|
 ESIElement Solutions Inc COM | 0.48% | 0.51% | 0.48% |
 MTCHMatch Group Inc COM | 0.47% | 0.47% | 0.47% |
 ESEESCO Technologies Inc. COM | 0.46% | 0.48% | 0.46% |
 EMNEastman Chemical Company COM | 0.46% | 0.57% | 0.46% |
 AGXArgan Inc COM | 0.45% | 0.49% | 0.45% |
 AWIArmstrong World Industries, Inc. COM | 0.43% | 0.46% | 0.43% |
 FSSFederal Signal Corp. COM | 0.43% | 0.43% | 0.43% |
 ZWSZurn Elkay Water Solutions Corporation COM | 0.42% | 0.43% | 0.42% |
 QRVOQorvo Inc COM | 0.42% | 0.43% | 0.42% |
 VSATViaSat, Inc. COM | 0.61% | 0.41% | 0.41% |
 EATBrinker International, Inc. COM | 0.53% | 0.41% | 0.41% |
 PTGXProtagonist Therapeutics Inc COM | 0.48% | 0.40% | 0.40% |
 GKOSGlaukos Corp. COM | 0.55% | 0.40% | 0.40% |
 TRNOTerreno Realty Corporation COM | 0.40% | 0.42% | 0.40% |
 ECGEverus Construction Group Inc. COM | 0.39% | 0.39% | 0.39% |
 PAYCPaycom Software Inc COM | 0.49% | 0.39% | 0.39% |
 KMXCarmax Inc COM | 0.45% | 0.38% | 0.38% |
 LWLamb Weston Holdings Inc COM | 0.39% | 0.38% | 0.38% |
 ALKSAlkermes PLC COM USD0.01 | 0.44% | 0.38% | 0.38% |
 RHPRyman Hospitality Properties Inc COM | 0.43% | 0.38% | 0.38% |
 MSGSMadison Square Garden Sports Corp. CL A | 0.39% | 0.38% | 0.38% |
 SNEXStoneX Group Inc COM | 0.39% | 0.37% | 0.37% |
 EPRTEssential Properties Realty Trust Inc. COM | 0.36% | 0.42% | 0.36% |
 SMSM Energy Co. COM | 0.36% | 0.46% | 0.36% |
Showing the top 250 of 558 shared holdings by overlap weight.
Frequently Asked Questions
How much do SPSM and IJR overlap?
SPSM and IJR overlap by 83.2% of portfolio weight. They share 558 holdings (SPSM holds 604 positions and IJR holds 605), based on each fund's latest SEC-reported holdings.
Is it redundant to own both SPSM and IJR?
The two portfolios are 83.2% identical by weight. Owning both mostly doubles down on the shared core rather than diversifying: the same large positions drive both funds.
What are the biggest shared holdings of SPSM and IJR?
The largest positions held by both funds are FORM, ESI, MTCH, ESE and EMN. Together the top 10 shared positions account for 5% of the total overlap.
What does SPSM own that IJR doesn't?
46 positions (8.4% of SPSM) are unique to SPSM, led by GTES, CAG and POOL. In the other direction, 47 positions (7.0% of IJR) are unique to IJR.