IBB vs VNQ: Holdings Overlap
iShares · 254 holdings · $9.3B · as of 2026-03-31
VNQVanguard Real Estate Index Fund
Vanguard · 146 holdings · $39.3B · as of 2026-04-30
Holdings snapshots are 30 days apart (IBB: 2026-03-31, VNQ: 2026-04-30). 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 IBB and VNQ?
iShares Biotechnology ETF (IBB, by iShares) holds 254 positions; Vanguard Real Estate Index Fund (VNQ, by Vanguard) holds 146. 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 · VNQ holds 146
- Weight in Shared Holdings
- IBB 0%·VNQ 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 VNQ. Showing the top 30 by weight.
Sector Breakdown
| Sector | IBB | VNQ |
|---|---|---|
| Real Estate | 0.0% | 99.3% |
| Health Care | 91.0% | 0.0% |
| Communication Services | 0.0% | 0.4% |
| Other Sectors | 0.0% | 0.0% |
| Unclassified | 8.9% | 0.0% |
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 VNQ).
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% |
| VNQ | +0.0% | +13.4% | +13.9% | +9.7% | +2.2% | +4.9% | 3.53% |
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 VNQ →
Shared Holdings(0)
These two funds have no holdings in common.
Frequently Asked Questions
How much do IBB and VNQ overlap?
IBB and VNQ overlap by 0.0% of portfolio weight. They share 0 holdings (IBB holds 254 positions and VNQ holds 146), based on each fund's latest SEC-reported holdings.
Is it redundant to own both IBB and VNQ?
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 VNQ doesn't?
254 positions (99.9% of IBB) are unique to IBB, led by GILD, AMGN and VRTX. In the other direction, 146 positions (99.7% of VNQ) are unique to VNQ.