DFAS vs IHI: Holdings Overlap
DFASDimensional U.S. Small Cap ETF
Dimensional · 2121 holdings · $15.3B · as of 2026-04-30
IHIiShares U.S. Medical Devices ETF
iShares · 47 holdings · $3.4B · as of 2026-03-31
Holdings snapshots are 30 days apart (DFAS: 2026-04-30, IHI: 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 DFAS and IHI?
Dimensional U.S. Small Cap ETF (DFAS, by Dimensional) holds 2121 positions; iShares U.S. Medical Devices ETF (IHI, by iShares) holds 47. They have 26 holdings in common, and by portfolio weight the two funds are 1.2% identical. In practical terms the pair is essentially distinct, holding almost none of the same securities.
- Overlap by Weight
- 1.2%Sum of the smaller weight of each shared holding
- Shared Holdings
- 26DFAS holds 2121 · IHI holds 47
- Weight in Shared Holdings
- DFAS 1%·IHI 10%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 DFAS
2095 of 2121 positions (98.6% of the fund) are not held by IHI. Showing the top 30 by weight.
Sector Breakdown
| Sector | DFAS | IHI |
|---|---|---|
| Health Care | 11.1% | 99.8% |
| Industrials | 20.6% | 0.0% |
| Financials | 19.2% | 0.0% |
| Consumer Discretionary | 12.4% | 0.0% |
| Information Technology | 12.0% | 0.0% |
| Other Sectors | 21.9% | 0.0% |
| Unclassified | 2.7% | 0.1% |
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 (3% of DFAS, 0% of IHI).
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| DFAS | +3.2% | +20.5% | +31.3% | +14.8% | +9.1% | — | 0.95% |
| IHI | +4.1% | -12.3% | -9.9% | +0.5% | -2.6% | +8.9% | 0.45% |
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 DFAS vs IHI →
Shared Holdings(26)
The top 10 shared positions account for 72% of the overlap, led by PEN, GMED and TFX.
 PENPenumbra Inc. COM | 0.14% | 1.75% | 0.14% |
|---|---|---|---|
 GMEDGlobus Medical, Inc., Class A | 0.13% | 1.30% | 0.13% |
 TFXTeleflex Incorporated COM | 0.12% | 0.72% | 0.12% |
 NVSTEnvista Holdings Corporation COM | 0.10% | 0.56% | 0.10% |
 BAXBaxter International, Inc. COM | 0.08% | 1.17% | 0.08% |
 LIVNLivaNova PLC ORD GBP1.00 (DI) | 0.08% | 0.47% | 0.08% |
 ITGRInteger Holdings Corp. COM | 0.07% | 0.42% | 0.07% |
 TMDXTransMedics Group Inc. COM | 0.07% | 0.46% | 0.07% |
 LMATLemaitre Vascular Inc. COM | 0.06% | 0.31% | 0.06% |
 OMCLOmnicell Inc COM | 0.04% | 0.20% | 0.04% |
 AORTArtivion Inc COM | 0.04% | 0.21% | 0.04% |
 INSPInspire Medical Systems Inc COM | 0.04% | 0.18% | 0.04% |
 ATRCAtricure Inc COM | 0.03% | 0.19% | 0.03% |
 ENOVEnovis Corporation COM | 0.03% | 0.18% | 0.03% |
 NVCRNovocure Ltd COM USD0.00 | 0.03% | 0.15% | 0.03% |
 CNMDConmed Corporation COM | 0.03% | 0.15% | 0.03% |
 IRMDIradimed Corp. COM | 0.02% | 0.10% | 0.02% |
 AXGNAxoGen Inc. COM | 0.02% | 0.22% | 0.02% |
 QDELQuidelOrtho Corp COM | 0.02% | 0.15% | 0.02% |
 IARTIntegra LifeSciences Holdings Corporation COM NEW | 0.02% | 0.09% | 0.02% |
 SIBNSI-BONE Inc. COM | 0.01% | 0.07% | 0.01% |
 BFLYButterfly Network, Inc., Class A | 0.01% | 0.11% | 0.01% |
 VREXVarex Imaging Corporation COM | 0.01% | 0.06% | 0.01% |
 OFIXOrthofix Medical Inc COM | 0.01% | 0.06% | 0.01% |
 ANGOAngiodynamics Inc COM | 0.01% | 0.06% | 0.01% |
Frequently Asked Questions
How much do DFAS and IHI overlap?
DFAS and IHI overlap by 1.2% of portfolio weight. They share 26 holdings (DFAS holds 2121 positions and IHI holds 47), based on each fund's latest SEC-reported holdings.
Is it redundant to own both DFAS and IHI?
The two portfolios are 1.2% identical by weight. Owning both is genuine diversification: the funds hold almost none of the same securities.
What are the biggest shared holdings of DFAS and IHI?
The largest positions held by both funds are PEN, GMED, TFX, NVST and BAX. Together the top 10 shared positions account for 72% of the total overlap.
What does DFAS own that IHI doesn't?
2095 positions (98.6% of DFAS) are unique to DFAS, led by AMKR, TTMI and AEIS. In the other direction, 21 positions (89.7% of IHI) are unique to IHI.