AVUS vs IBB: Holdings Overlap
Avantis · 1875 holdings · $13.9B · as of 2026-05-31
iShares · 254 holdings · $9.3B · as of 2026-03-31
Holdings snapshots are 61 days apart (AVUS: 2026-05-31, IBB: 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 AVUS and IBB?
Avantis U.S. Equity ETF (AVUS, by Avantis) holds 1875 positions; iShares Biotechnology ETF (IBB, by iShares) holds 254. They have 85 holdings in common, and by portfolio weight the two funds are 1.5% identical. In practical terms the pair is essentially distinct, holding almost none of the same securities.
- Overlap by Weight
- 1.5%Sum of the smaller weight of each shared holding
- Shared Holdings
- 85AVUS holds 1875 · IBB holds 254
- Weight in Shared Holdings
- AVUS 1%·IBB 60%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 AVUS
1790 of 1875 positions (98.4% of the fund) are not held by IBB. Showing the top 30 by weight.
Sector Breakdown
| Sector | AVUS | IBB |
|---|---|---|
| Health Care | 7.0% | 91.0% |
| Information Technology | 29.7% | 0.0% |
| Financials | 14.6% | 0.0% |
| Industrials | 11.7% | 0.0% |
| Consumer Discretionary | 11.1% | 0.0% |
| Other Sectors | 25.6% | 0.0% |
| Unclassified | 0.2% | 8.9% |
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 AVUS, 9% of IBB).
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| AVUS | +3.1% | +17.9% | +28.8% | +20.7% | +13.1% | — | 0.90% |
| IBB | -0.3% | +17.3% | +51.0% | +16.4% | +3.1% | +7.4% | 0.21% |
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 AVUS vs IBB →
Shared Holdings(85)
The top 10 shared positions account for 83% of the overlap, led by GILD, AMGN and VRTX.
 GILDGilead Sciences, Inc. | 0.45% | 7.75% | 0.45% |
|---|---|---|---|
 AMGNAmgen, Inc. | 0.20% | 7.51% | 0.20% |
 VRTXVertex Pharmaceuticals, Inc. | 0.14% | 7.44% | 0.14% |
 REGNRegeneron Pharmaceuticals, Inc. | 0.11% | 7.21% | 0.11% |
 UTHRUnited Therapeutics Corp. | 0.09% | 2.30% | 0.09% |
 EXELExelixis, Inc. | 0.07% | 0.99% | 0.07% |
 BIIBBiogen, Inc. | 0.06% | 2.46% | 0.06% |
 ALKSAlkermes PLC | 0.03% | 0.53% | 0.03% |
 ILMNIllumina, Inc. | 0.03% | 1.68% | 0.03% |
 INCYIncyte Corp. | 0.03% | 1.70% | 0.03% |
 NBIXNeurocrine Biosciences, Inc. | 0.02% | 1.18% | 0.02% |
 MRNAModerna, Inc. | 0.02% | 1.68% | 0.02% |
 MEDPMedpace Holdings, Inc. | 0.02% | 1.00% | 0.02% |
 HALOHalozyme Therapeutics, Inc. | 0.02% | 0.69% | 0.02% |
 ROIVRoivant Sciences Ltd. | 0.02% | 1.24% | 0.02% |
 ARWRArrowhead Pharmaceuticals, Inc. | 0.02% | 0.75% | 0.02% |
 BMRNBioMarin Pharmaceutical, Inc. | 0.02% | 0.98% | 0.02% |
 GRALGRAIL, Inc. | 0.01% | 0.17% | 0.01% |
 PCVXVaxcyte, Inc. | 0.01% | 0.75% | 0.01% |
 1CGCRISPR Therapeutics AG | 0.01% | 0.39% | 0.01% |
 GLUEMonte Rosa Therapeutics, Inc. | 0.01% | 0.07% | 0.01% |
 AUPHAurinia Pharmaceuticals, Inc. | 0.01% | 0.16% | 0.01% |
 TECHBio-Techne Corp. | 0.00% | 0.74% | 0.00% |
 KRYSKrystal Biotech, Inc. | 0.00% | 0.60% | 0.00% |
 RIGLRigel Pharmaceuticals, Inc. | 0.00% | 0.04% | 0.00% |
Frequently Asked Questions
How much do AVUS and IBB overlap?
AVUS and IBB overlap by 1.5% of portfolio weight. They share 85 holdings (AVUS holds 1875 positions and IBB holds 254), based on each fund's latest SEC-reported holdings.
Is it redundant to own both AVUS and IBB?
The two portfolios are 1.5% identical by weight. Owning both is genuine diversification: the funds hold almost none of the same securities.
What are the biggest shared holdings of AVUS and IBB?
The largest positions held by both funds are GILD, AMGN, VRTX, REGN and UTHR. Together the top 10 shared positions account for 83% of the total overlap.
What does AVUS own that IBB doesn't?
1790 positions (98.4% of AVUS) are unique to AVUS, led by NVDA, AAPL and MSFT. In the other direction, 169 positions (39.7% of IBB) are unique to IBB.