IHI vs SPY: Holdings Overlap
IHIiShares U.S. Medical Devices ETF
iShares · 47 holdings · $3.4B · as of 2026-03-31
SPYState Street® SPDR® S&P 500® ETF Trust
State Street (SPDR) · 504 holdings · $812.0B · as of 2026-08-06
Holdings snapshots are 128 days apart (IHI: 2026-03-31, SPY: 2026-08-06). 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 IHI and SPY?
iShares U.S. Medical Devices ETF (IHI, by iShares) holds 47 positions; State Street® SPDR® S&P 500® ETF Trust (SPY, by State Street (SPDR)) holds 504. They have 15 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
- 15IHI holds 47 · SPY holds 504
- Weight in Shared Holdings
- IHI 86%·SPY 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
32 of 47 positions (13.5% of the fund) are not held by SPY. Showing the top 30 by weight.
Sector Breakdown
| Sector | IHI | SPY |
|---|---|---|
| Health Care | 99.8% | 8.9% |
| Information Technology | 0.0% | 37.6% |
| Financials | 0.0% | 12.3% |
| Communication Services | 0.0% | 9.7% |
| Consumer Discretionary | 0.0% | 9.3% |
| Other Sectors | 0.0% | 22.1% |
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.
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% |
| SPY | +3.4% | +14.0% | +23.7% | +21.2% | +13.3% | +15.3% | 0.97% |
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 SPY →
Shared Holdings(15)
The top 10 shared positions account for 90% of the overlap, led by ABT, ISRG and SYK.
 ABTAbbott Laboratories COM | 16.98% | 0.28% | 0.28% |
|---|---|---|---|
 ISRGIntuitive Surgical Inc. COM NEW | 15.57% | 0.20% | 0.20% |
 SYKStryker Corporation COM | 10.76% | 0.18% | 0.18% |
 MDTMedtronic PLC USD0.0001 | 4.62% | 0.17% | 0.17% |
 BSXBoston Scientific Corporation COM | 4.28% | 0.11% | 0.11% |
 EWEdwards Lifesciences Corporation COM | 4.47% | 0.08% | 0.08% |
 BDXBecton, Dickinson and Company COM | 4.57% | 0.07% | 0.07% |
 IDXXIDEXX Laboratories Inc. COM | 4.44% | 0.07% | 0.07% |
 RMDResMed Inc. COM | 4.43% | 0.05% | 0.05% |
 GEHCGE Healthcare Technologies Inc. COMMON STOCK | 4.40% | 0.05% | 0.05% |
 DXCMDexCom Inc COM | 3.28% | 0.05% | 0.05% |
 STESteris PLC ORD USD0.001 | 2.94% | 0.03% | 0.03% |
 ZBHZimmer Biomet Holdings Inc COM | 2.43% | 0.03% | 0.03% |
 BAXBaxter International, Inc. COM | 1.17% | 0.02% | 0.02% |
 PODDInsulet Corporation COM | 2.00% | 0.01% | 0.01% |
Frequently Asked Questions
How much do IHI and SPY overlap?
IHI and SPY overlap by 1.4% of portfolio weight. They share 15 holdings (IHI holds 47 positions and SPY holds 504), based on each fund's latest SEC-reported holdings.
Is it redundant to own both IHI and SPY?
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 SPY?
The largest positions held by both funds are ABT, ISRG, SYK, MDT and BSX. Together the top 10 shared positions account for 90% of the total overlap.
What does IHI own that SPY doesn't?
32 positions (13.5% of IHI) are unique to IHI, led by HOLX, PEN and GMED. In the other direction, 489 positions (98.5% of SPY) are unique to SPY.