IYH vs VXF: Holdings Overlap
IYHiShares U.S. Healthcare ETF
iShares · 103 holdings · $3.7B · as of 2026-04-30
VXFVanguard Extended Market Index Fund
Vanguard · 3359 holdings · $32.2B · as of 2026-03-31
Holdings snapshots are 30 days apart (IYH: 2026-04-30, VXF: 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 IYH and VXF?
iShares U.S. Healthcare ETF (IYH, by iShares) holds 103 positions; Vanguard Extended Market Index Fund (VXF, by Vanguard) holds 3359. They have 46 holdings in common, and by portfolio weight the two funds are 6.4% identical. In practical terms the pair is lightly overlapping, with most of each portfolio distinct.
- Overlap by Weight
- 6.4%Sum of the smaller weight of each shared holding
- Shared Holdings
- 46IYH holds 103 · VXF holds 3359
- Weight in Shared Holdings
- IYH 9%·VXF 6%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 IYH
57 of 103 positions (91.3% of the fund) are not held by VXF. Showing the top 30 by weight.
Only in VXF
3313 of 3359 positions (93.3% of the fund) are not held by IYH. Showing the top 30 by weight.
Sector Breakdown
| Sector | IYH | VXF |
|---|---|---|
| Health Care | 99.8% | 13.3% |
| Industrials | 0.0% | 19.5% |
| Information Technology | 0.0% | 16.3% |
| Financials | 0.0% | 15.0% |
| Consumer Discretionary | 0.0% | 9.8% |
| Other Sectors | 0.0% | 23.6% |
| Unclassified | 0.0% | 2.4% |
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 IYH, 2% of VXF).
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| IYH | +0.6% | +8.1% | +30.4% | +8.9% | +5.3% | +9.8% | 1.14% |
| VXF | +2.4% | +18.9% | +26.9% | +18.6% | +6.9% | +12.0% | 0.99% |
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 IYH vs VXF →
Shared Holdings(46)
The top 10 shared positions account for 52% of the overlap, led by ALNY, INSM and NTRA.
 ALNYAlnylam Pharmaceuticals Inc. COM | 0.72% | 0.60% | 0.60% |
|---|---|---|---|
 INSMInsmed Inc COM PAR $.01 | 0.52% | 0.48% | 0.48% |
 NTRANatera Inc. COM | 0.50% | 0.38% | 0.38% |
 VEEVVeeva Systems, Inc., Class A | 0.43% | 0.36% | 0.36% |
 UTHRUnited Therapeutics Corporation COM | 0.44% | 0.35% | 0.35% |
 ILMNIllumina Inc COM | 0.36% | 0.26% | 0.26% |
 RPRXRoyalty Pharma PLC COM USD0.0001 CLASS A | 0.35% | 0.25% | 0.25% |
 RVMDRevolution Medicines Inc COM | 0.47% | 0.24% | 0.24% |
 THCTenet Healthcare Corporation COM NEW | 0.28% | 0.23% | 0.23% |
 MDLNMedline, Inc., Class A | 0.26% | 0.20% | 0.20% |
 NBIXNeurocrine Biosciences Inc COM | 0.23% | 0.18% | 0.18% |
 PENPenumbra Inc. COM | 0.23% | 0.18% | 0.18% |
 ROIVRoivant Sciences Ltd SHS | 0.22% | 0.17% | 0.17% |
 IONSIonis Pharmaceuticals, Inc. COM | 0.22% | 0.17% | 0.17% |
 ELANElanco Animal Health Inc COM | 0.20% | 0.16% | 0.16% |
 JAZZJazz Pharmaceuticals Public Limited Company | 0.22% | 0.16% | 0.16% |
 EXELExelixis, Inc. COM | 0.21% | 0.15% | 0.15% |
 BMRNBiomarin Pharmaceutical Inc. COM | 0.19% | 0.15% | 0.15% |
 MEDPMedpace Holdings Inc. COM | 0.17% | 0.15% | 0.15% |
 EHCEncompass Health Corporation COM | 0.18% | 0.13% | 0.13% |
 GMEDGlobus Medical, Inc., Class A | 0.19% | 0.13% | 0.13% |
| Masimo Corporation COM | 0.15% | 0.11% | 0.11% |
 HALOHalozyme Therapeutics Inc COM | 0.14% | 0.10% | 0.10% |
 MOHMolina Healthcare, Inc. COM | 0.18% | 0.09% | 0.09% |
 RGENRepligen Corporation COM | 0.11% | 0.09% | 0.09% |
Frequently Asked Questions
How much do IYH and VXF overlap?
IYH and VXF overlap by 6.4% of portfolio weight. They share 46 holdings (IYH holds 103 positions and VXF holds 3359), based on each fund's latest SEC-reported holdings.
Is it redundant to own both IYH and VXF?
The two portfolios are 6.4% identical by weight. Owning both is not redundant. Most of each portfolio is distinct, so the funds can serve different roles.
What are the biggest shared holdings of IYH and VXF?
The largest positions held by both funds are ALNY, INSM, NTRA, VEEV and UTHR. Together the top 10 shared positions account for 52% of the total overlap.
What does IYH own that VXF doesn't?
57 positions (91.3% of IYH) are unique to IYH, led by LLY, JNJ and ABBV. In the other direction, 3313 positions (93.3% of VXF) are unique to VXF.