IHI vs IWM: Holdings Overlap
IHIiShares U.S. Medical Devices ETF
iShares · 47 holdings · $3.4B · as of 2026-03-31
iShares · 1941 holdings · $82.2B · as of 2026-03-31
How similar are IHI and IWM?
iShares U.S. Medical Devices ETF (IHI, by iShares) holds 47 positions; iShares Russell 2000 ETF (IWM, by iShares) holds 1941. They have 25 holdings in common, and by portfolio weight the two funds are 1.4% identical. In practical terms the pair is essentially distinct, holding almost none of the same securities.
- Overlap by Weight
- 1.4%Sum of the smaller weight of each shared holding
- Shared Holdings
- 25IHI holds 47 · IWM holds 1941
- Weight in Shared Holdings
- IHI 6%·IWM 1%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 IHI
22 of 47 positions (94.2% of the fund) are not held by IWM.
Sector Breakdown
| Sector | IHI | IWM |
|---|---|---|
| Health Care | 99.8% | 16.6% |
| Industrials | 0.0% | 17.9% |
| Financials | 0.0% | 15.3% |
| Information Technology | 0.0% | 13.6% |
| Consumer Discretionary | 0.0% | 8.0% |
| Other Sectors | 0.0% | 22.7% |
| Unclassified | 0.1% | 5.5% |
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 (0% of IHI, 5% of IWM).
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| IHI | +4.1% | -12.3% | -9.9% | +0.5% | -2.6% | +8.9% | 0.45% |
| IWM | +1.8% | +23.0% | +38.6% | +17.1% | +7.5% | +10.8% | 0.88% |
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 IHI vs IWM →
Shared Holdings(25)
The top 10 shared positions account for 68% of the overlap, led by GKOS, IRTC and LIVN.
 GKOSGlaukos Corp. COM | 0.84% | 0.20% | 0.20% |
|---|---|---|---|
 IRTCiRhythm Holdings Inc. COM | 0.52% | 0.13% | 0.13% |
 LIVNLivaNova PLC ORD GBP1.00 (DI) | 0.47% | 0.12% | 0.12% |
 TMDXTransMedics Group Inc. COM | 0.46% | 0.11% | 0.11% |
 ITGRInteger Holdings Corp. COM | 0.42% | 0.10% | 0.10% |
 LMATLemaitre Vascular Inc. COM | 0.31% | 0.08% | 0.08% |
 AXGNAxoGen Inc. COM | 0.22% | 0.05% | 0.05% |
 AORTArtivion Inc COM | 0.21% | 0.05% | 0.05% |
 OMCLOmnicell Inc COM | 0.20% | 0.05% | 0.05% |
 ATRCAtricure Inc COM | 0.19% | 0.05% | 0.05% |
 PRCTProcept Biorobotics Corp. COM | 0.19% | 0.05% | 0.05% |
 ENOVEnovis Corporation COM | 0.18% | 0.04% | 0.04% |
 TNDMTandem Diabetes Care Inc COM NEW | 0.18% | 0.04% | 0.04% |
 ATECAlphatec Holdings Inc. COM NEW | 0.17% | 0.04% | 0.04% |
 QDELQuidelOrtho Corp COM | 0.15% | 0.04% | 0.04% |
 NVCRNovocure Ltd COM USD0.00 | 0.15% | 0.04% | 0.04% |
 CNMDConmed Corporation COM | 0.15% | 0.04% | 0.04% |
 BFLYButterfly Network, Inc., Class A | 0.11% | 0.03% | 0.03% |
 IRMDIradimed Corp. COM | 0.10% | 0.03% | 0.03% |
 IARTIntegra LifeSciences Holdings Corporation COM NEW | 0.09% | 0.02% | 0.02% |
 SIBNSI-BONE Inc. COM | 0.07% | 0.02% | 0.02% |
 OFIXOrthofix Medical Inc COM | 0.06% | 0.02% | 0.02% |
 VREXVarex Imaging Corporation COM | 0.06% | 0.01% | 0.01% |
 ANGOAngiodynamics Inc COM | 0.06% | 0.01% | 0.01% |
 BBNXBeta Bionics Inc. COM | 0.05% | 0.01% | 0.01% |
Frequently Asked Questions
How much do IHI and IWM overlap?
IHI and IWM overlap by 1.4% of portfolio weight. They share 25 holdings (IHI holds 47 positions and IWM holds 1941), based on each fund's latest SEC-reported holdings.
Is it redundant to own both IHI and IWM?
The two portfolios are 1.4% identical by weight. Owning both is genuine diversification: the funds hold almost none of the same securities.
What are the biggest shared holdings of IHI and IWM?
The largest positions held by both funds are GKOS, IRTC, LIVN, TMDX and ITGR. Together the top 10 shared positions account for 68% of the total overlap.
What does IHI own that IWM doesn't?
22 positions (94.2% of IHI) are unique to IHI, led by ABT, ISRG and SYK. In the other direction, 1916 positions (98.3% of IWM) are unique to IWM.