IBB vs SOXX: Holdings Overlap
iShares · 254 holdings · $9.3B · as of 2026-03-31
iShares · 30 holdings · $47.6B · as of 2026-03-31
How similar are IBB and SOXX?
iShares Biotechnology ETF (IBB, by iShares) holds 254 positions; iShares Semiconductor ETF (SOXX, by iShares) holds 30. They have 0 holdings in common, and by portfolio weight the two funds are 0.0% identical. In practical terms the pair is essentially distinct, holding almost none of the same securities.
- Overlap by Weight
- 0.0%Sum of the smaller weight of each shared holding
- Shared Holdings
- 0IBB holds 254 · SOXX holds 30
- Weight in Shared Holdings
- IBB 0%·SOXX 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
254 of 254 positions (99.9% of the fund) are not held by SOXX. Showing the top 30 by weight.
Sector Breakdown
| Sector | IBB | SOXX |
|---|---|---|
| Information Technology | 0.0% | 98.6% |
| Health Care | 91.0% | 0.0% |
| Other Sectors | 0.0% | 0.0% |
| Unclassified | 8.9% | 1.2% |
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, 1% of SOXX).
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% |
| SOXX | -1.5% | +80.6% | +126.6% | +47.5% | +29.5% | +32.9% | 0.27% |
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 SOXX →
Shared Holdings(0)
These two funds have no holdings in common.
Frequently Asked Questions
How much do IBB and SOXX overlap?
IBB and SOXX overlap by 0.0% of portfolio weight. They share 0 holdings (IBB holds 254 positions and SOXX holds 30), based on each fund's latest SEC-reported holdings.
Is it redundant to own both IBB and SOXX?
The two portfolios are 0.0% identical by weight. Owning both is genuine diversification: the funds hold almost none of the same securities.
What does IBB own that SOXX doesn't?
254 positions (99.9% of IBB) are unique to IBB, led by GILD, AMGN and VRTX. In the other direction, 30 positions (99.9% of SOXX) are unique to SOXX.