IYH vs VBK: Holdings Overlap
IYHiShares U.S. Healthcare ETF
iShares · 103 holdings · $3.7B · as of 2026-04-30
VBKVanguard Small-cap Growth Index Fund
Vanguard · 551 holdings · $24.3B · as of 2026-03-31
Holdings snapshots are 30 days apart (IYH: 2026-04-30, VBK: 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 VBK?
iShares U.S. Healthcare ETF (IYH, by iShares) holds 103 positions; Vanguard Small-cap Growth Index Fund (VBK, by Vanguard) holds 551. They have 29 holdings in common, and by portfolio weight the two funds are 4.9% identical. In practical terms the pair is essentially distinct, holding almost none of the same securities.
- Overlap by Weight
- 4.9%Sum of the smaller weight of each shared holding
- Shared Holdings
- 29IYH holds 103 · VBK holds 551
- Weight in Shared Holdings
- IYH 5%·VBK 8%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
74 of 103 positions (94.9% of the fund) are not held by VBK. Showing the top 30 by weight.
Only in VBK
522 of 551 positions (91.5% of the fund) are not held by IYH. Showing the top 30 by weight.
Sector Breakdown
| Sector | IYH | VBK |
|---|---|---|
| Health Care | 99.8% | 16.1% |
| Industrials | 0.0% | 24.6% |
| Information Technology | 0.0% | 21.6% |
| Consumer Discretionary | 0.0% | 9.9% |
| Financials | 0.0% | 6.1% |
| Other Sectors | 0.0% | 20.6% |
| Unclassified | 0.0% | 0.9% |
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 IYH, 1% of VBK).
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% |
| VBK | +1.8% | +19.6% | +29.4% | +16.6% | +5.3% | +11.4% | 0.42% |
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 VBK →
Shared Holdings(29)
The top 10 shared positions account for 63% of the overlap, led by INSM, NTRA and RVMD.
 INSMInsmed Inc COM PAR $.01 | 0.52% | 0.59% | 0.52% |
|---|---|---|---|
 NTRANatera Inc. COM | 0.50% | 0.88% | 0.50% |
 RVMDRevolution Medicines Inc COM | 0.47% | 0.61% | 0.47% |
 INCYIncyte Corporation. COM | 0.28% | 0.53% | 0.28% |
 NBIXNeurocrine Biosciences Inc COM | 0.23% | 0.44% | 0.23% |
 PENPenumbra Inc. COM | 0.23% | 0.41% | 0.23% |
 ROIVRoivant Sciences Ltd SHS | 0.22% | 0.43% | 0.22% |
 PODDInsulet Corporation COM | 0.22% | 0.25% | 0.22% |
 IONSIonis Pharmaceuticals, Inc. COM | 0.22% | 0.39% | 0.22% |
 EXELExelixis, Inc. COM | 0.21% | 0.35% | 0.21% |
 BMRNBiomarin Pharmaceutical Inc. COM | 0.19% | 0.36% | 0.19% |
 GMEDGlobus Medical, Inc., Class A | 0.19% | 0.32% | 0.19% |
 MEDPMedpace Holdings Inc. COM | 0.17% | 0.36% | 0.17% |
 TECHBio-Techne Corp COM | 0.16% | 0.27% | 0.16% |
| Masimo Corporation COM | 0.15% | 0.27% | 0.15% |
 HALOHalozyme Therapeutics Inc COM | 0.14% | 0.25% | 0.14% |
 RGENRepligen Corporation COM | 0.11% | 0.21% | 0.11% |
 CHEChemed Corporation COM | 0.11% | 0.18% | 0.11% |
 TEMTempus AI, Inc., Class A | 0.10% | 0.17% | 0.10% |
 1JKApellis Pharmaceuticals Inc COM | 0.08% | 0.15% | 0.08% |
 CORTCorcept Therapeutics Inc. COM | 0.08% | 0.12% | 0.08% |
 SHCSotera Health Company COM | 0.07% | 0.12% | 0.07% |
 VKTXViking Therapeutics Inc. COM | 0.06% | 0.12% | 0.06% |
 DOCSDoximity, Inc., Class A | 0.06% | 0.10% | 0.06% |
 RAREUltragenyx Pharmaceuticals Inc COM | 0.04% | 0.06% | 0.04% |
Frequently Asked Questions
How much do IYH and VBK overlap?
IYH and VBK overlap by 4.9% of portfolio weight. They share 29 holdings (IYH holds 103 positions and VBK holds 551), based on each fund's latest SEC-reported holdings.
Is it redundant to own both IYH and VBK?
The two portfolios are 4.9% identical by weight. Owning both is genuine diversification: the funds hold almost none of the same securities.
What are the biggest shared holdings of IYH and VBK?
The largest positions held by both funds are INSM, NTRA, RVMD, INCY and NBIX. Together the top 10 shared positions account for 63% of the total overlap.
What does IYH own that VBK doesn't?
74 positions (94.9% of IYH) are unique to IYH, led by LLY, JNJ and ABBV. In the other direction, 522 positions (91.5% of VBK) are unique to VBK.