VTI vs XBI: Holdings Overlap
VTIVanguard Total Stock Market Index Fund
Vanguard · 3505 holdings · $696.4B · as of 2026-03-31
XBIState Street® SPDR® S&P® Biotech ETF
State Street (SPDR) · 149 holdings · $10.0B · as of 2026-08-06
Holdings snapshots are 128 days apart (VTI: 2026-03-31, XBI: 2026-08-06). 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 VTI and XBI?
Vanguard Total Stock Market Index Fund (VTI, by Vanguard) holds 3505 positions; State Street® SPDR® S&P® Biotech ETF (XBI, by State Street (SPDR)) holds 149. They have 141 holdings in common, and by portfolio weight the two funds are 2.4% identical. In practical terms the pair is essentially distinct, holding almost none of the same securities.
- Overlap by Weight
- 2.4%Sum of the smaller weight of each shared holding
- Shared Holdings
- 141VTI holds 3505 · XBI holds 149
- Weight in Shared Holdings
- VTI 2%·XBI 96%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 VTI
3364 of 3505 positions (97.3% of the fund) are not held by XBI. Showing the top 30 by weight.
Sector Breakdown
| Sector | VTI | XBI |
|---|---|---|
| Health Care | 10.0% | 95.5% |
| Information Technology | 30.5% | 0.0% |
| Financials | 12.7% | 0.0% |
| Industrials | 10.4% | 0.0% |
| Consumer Discretionary | 9.8% | 0.0% |
| Other Sectors | 26.0% | 0.0% |
| Unclassified | 0.3% | 4.6% |
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 VTI, 5% of XBI).
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| VTI | +3.3% | +14.6% | +24.2% | +20.9% | +12.3% | +14.9% | 1.02% |
| XBI | -4.0% | +29.2% | +85.3% | +26.3% | +4.5% | +9.5% | 0.36% |
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 VTI vs XBI →
Shared Holdings(141)
The top 10 shared positions account for 74% of the overlap, led by ABBV, AMGN and GILD.
 ABBVAbbVie Inc. COM | 0.61% | 1.05% | 0.61% |
|---|---|---|---|
 AMGNAmgen Inc. COM | 0.30% | 1.16% | 0.30% |
 GILDGilead Sciences Inc. COM | 0.28% | 1.04% | 0.28% |
 VRTXVertex Pharmaceuticals Incorporated COM | 0.18% | 1.07% | 0.18% |
 REGNRegeneron Pharmaceuticals, Inc. COM | 0.13% | 1.24% | 0.13% |
 ALNYAlnylam Pharmaceuticals Inc. COM | 0.07% | 0.72% | 0.07% |
 INSMInsmed Inc COM PAR $.01 | 0.06% | 1.39% | 0.06% |
 BIIBBiogen Inc COM | 0.04% | 1.03% | 0.04% |
 NTRANatera Inc. COM | 0.04% | 1.18% | 0.04% |
 UTHRUnited Therapeutics Corporation COM | 0.04% | 0.95% | 0.04% |
 RVMDRevolution Medicines Inc COM | 0.03% | 1.33% | 0.03% |
 MRNAModerna Inc COM | 0.03% | 1.13% | 0.03% |
 INCYIncyte Corporation. COM | 0.03% | 1.09% | 0.03% |
 NBIXNeurocrine Biosciences Inc COM | 0.02% | 0.96% | 0.02% |
 BBIOBridgebio Pharma Inc COM | 0.02% | 1.19% | 0.02% |
 ROIVRoivant Sciences Ltd SHS | 0.02% | 1.19% | 0.02% |
 IONSIonis Pharmaceuticals, Inc. COM | 0.02% | 0.72% | 0.02% |
 BMRNBiomarin Pharmaceutical Inc. COM | 0.02% | 1.06% | 0.02% |
 EXELExelixis, Inc. COM | 0.02% | 0.96% | 0.02% |
 MDGLMadrigal Pharmaceuticals Inc COM | 0.02% | 1.05% | 0.02% |
 PRAXPraxis Precision Medicines Inc COM NEW | 0.01% | 1.49% | 0.01% |
 PCVXVaxcyte Inc COM | 0.01% | 1.25% | 0.01% |
 ARWRArrowhead Pharmaceuticals Inc COM | 0.01% | 1.17% | 0.01% |
 CYTKCytokinetics Incorporated | 0.01% | 1.17% | 0.01% |
 HALOHalozyme Therapeutics Inc COM | 0.01% | 1.18% | 0.01% |
Frequently Asked Questions
How much do VTI and XBI overlap?
VTI and XBI overlap by 2.4% of portfolio weight. They share 141 holdings (VTI holds 3505 positions and XBI holds 149), based on each fund's latest SEC-reported holdings.
Is it redundant to own both VTI and XBI?
The two portfolios are 2.4% identical by weight. Owning both is genuine diversification: the funds hold almost none of the same securities.
What are the biggest shared holdings of VTI and XBI?
The largest positions held by both funds are ABBV, AMGN, GILD, VRTX and REGN. Together the top 10 shared positions account for 74% of the total overlap.
What does VTI own that XBI doesn't?
3364 positions (97.3% of VTI) are unique to VTI, led by NVDA, AAPL and MSFT. In the other direction, 8 positions (3.9% of XBI) are unique to XBI.