IBB vs IHI: Holdings Overlap
iShares · 254 holdings · $9.3B · as of 2026-03-31
IHIiShares U.S. Medical Devices ETF
iShares · 47 holdings · $3.4B · as of 2026-03-31
How similar are IBB and IHI?
iShares Biotechnology ETF (IBB, by iShares) holds 254 positions; iShares U.S. Medical Devices ETF (IHI, by iShares) holds 47. They have 1 holdings in common, and by portfolio weight the two funds are 0.1% identical. In practical terms the pair is essentially distinct, holding almost none of the same securities.
- Overlap by Weight
- 0.1%Sum of the smaller weight of each shared holding
- Shared Holdings
- 1IBB holds 254 · IHI holds 47
- Weight in Shared Holdings
- IBB 0%·IHI 0%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 IBB
253 of 254 positions (99.8% of the fund) are not held by IHI. Showing the top 30 by weight.
Only in IHI
46 of 47 positions (99.7% of the fund) are not held by IBB. Showing the top 30 by weight.
Sector Breakdown
| Sector | IBB | IHI |
|---|---|---|
| Health Care | 91.0% | 99.8% |
| Other Sectors | 0.0% | 0.0% |
| Unclassified | 8.9% | 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 (9% of IBB, 0% of IHI).
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| IBB | -0.3% | +17.3% | +51.0% | +16.4% | +3.1% | +7.4% | 0.21% |
| 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 IBB vs IHI →
Shared Holdings(1)
 NVCRNovocure Ltd COM USD0.00 | 0.10% | 0.15% | 0.10% |
|---|
Frequently Asked Questions
How much do IBB and IHI overlap?
IBB and IHI overlap by 0.1% of portfolio weight. They share 1 holdings (IBB holds 254 positions and IHI holds 47), based on each fund's latest SEC-reported holdings.
Is it redundant to own both IBB and IHI?
The two portfolios are 0.1% identical by weight. Owning both is genuine diversification: the funds hold almost none of the same securities.
What are the biggest shared holdings of IBB and IHI?
The largest positions held by both funds are NVCR. Together the top 1 shared positions account for 100% of the total overlap.
What does IBB own that IHI doesn't?
253 positions (99.8% of IBB) are unique to IBB, led by GILD, AMGN and VRTX. In the other direction, 46 positions (99.7% of IHI) are unique to IHI.