Guardfolio Research · ETF Overlap
XLK vs VTI Overlap: 31.8% of Weight in Shared Holdings
XLK (Technology Select Sector SPDR) and VTI (Vanguard Total Stock Market) overlap by 31.8% of normalized weight through 71 shared securities, led by NVDA, AAPL, MSFT, AVGO, MU. Here is which positions contribute most and what the result can and cannot say about diversification.
Overlap Summary
Bottom line
XLK and VTI share 31.8% of normalized fund weight across 71 securities. That is significant overlap: the funds reinforce some of the same positions, so combining them may diversify less than expected..
The Data
Exactly which securities XLK and VTI share
The table below shows the largest contributors to overlap across the licensed full holdings, with each fund's normalized weight and the lesser weight that counts toward overlap.
| Data basis | Licensed full holdings |
|---|---|
| Fund dates | XLK 2026-08-24; VTI 2026-08-24 |
| Coverage gate | At least 97% retained per fund |
| Holding | XLK weight | VTI weight | Shared (min) |
|---|---|---|---|
| NVIDIA CORP (NVDA) | 14.22% | 6.41% | 6.41% |
| APPLE INC (AAPL) | 12.43% | 6.30% | 6.30% |
| MICROSOFT CORP (MSFT) | 9.82% | 4.79% | 4.79% |
| BROADCOM INC (AVGO) | 4.77% | 2.56% | 2.56% |
| MICRON TECHNOLOGY INC (MU) | 4.11% | 1.29% | 1.29% |
| ADVANCED MICRO DEVICES (AMD) | 4.02% | 1.08% | 1.08% |
| CISCO SYSTEMS INC (CSCO) | 2.93% | 0.57% | 0.57% |
| APPLIED MATERIALS INC (AMAT) | 2.61% | 0.56% | 0.56% |
| LAM RESEARCH CORP (LRCX) | 2.62% | 0.51% | 0.51% |
| INTEL CORP (INTC) | 2.97% | 0.50% | 0.50% |
| PALO ALTO NETWORKS INC (PANW) | 1.94% | 0.38% | 0.38% |
| PALANTIR TECHNOLOGIES INC A (PLTR) | 2.76% | 0.37% | 0.37% |
| TEXAS INSTRUMENTS INC (TXN) | 1.61% | 0.35% | 0.35% |
| KLA CORP (KLAC) | 1.60% | 0.33% | 0.33% |
| ORACLE CORP (ORCL) | 1.66% | 0.31% | 0.31% |
| AMPHENOL CORP CL A (APH) | 1.29% | 0.27% | 0.27% |
| ARISTA NETWORKS INC (ANET) | 1.30% | 0.27% | 0.27% |
| SEAGATE TECHNOLOGY HOLDINGS (STX) | 1.27% | 0.27% | 0.27% |
| WESTERN DIGITAL CORP (WDC) | 1.06% | 0.26% | 0.26% |
| CROWDSTRIKE HOLDINGS INC A (CRWD) | 1.30% | 0.26% | 0.26% |
| Total full-holdings overlap | 98.1% | 31.8% | 31.8% |
Showing the 20 largest contributors of 71 shared securities. The total uses every shared security.
The 31.8% figure uses all reported non-cash holdings and sums the lesser normalized weight for each shared security. XLK is dated 2026-08-24 with 99.934% retained coverage; VTI is dated 2026-08-24 with 99.908% retained coverage.
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Sector Picture
XLK vs VTI: sector exposure side by side
Two funds can share few holdings yet still concentrate the same sectors. Here is how the top sectors compare (31.0% combined sector overlap).
| Sector | XLK | VTI |
|---|---|---|
| Technology | 100.0% | 30.9% |
| Financial Services | 0.0% | 13.0% |
| Consumer Discretionary | 0.0% | 10.4% |
| Industrials | 0.0% | 9.8% |
| Healthcare | 0.0% | 9.6% |
| Communication Services | 0.0% | 7.6% |
The Verdict
Should you hold both XLK and VTI?
XLK and VTI share 31.8% of normalized fund weight across 71 securities. That is significant overlap: the funds reinforce some of the same positions, so combining them may diversify less than expected.
FAQ
XLK vs VTI overlap: common questions
How much do XLK and VTI overlap?
XLK (Technology Select Sector SPDR) and VTI (Vanguard Total Stock Market) overlap by approximately 31.8% of normalized weight across their licensed full holdings. They share 71 securities; the largest contributors include NVDA, AAPL, MSFT, AVGO, MU, AMD, CSCO, AMAT. The separately dated sector reference shows 31.0% overlap.
What stocks do XLK and VTI both hold?
Both XLK and VTI hold NVIDIA CORP (NVDA), APPLE INC (AAPL), MICROSOFT CORP (MSFT), BROADCOM INC (AVGO), MICRON TECHNOLOGY INC (MU), ADVANCED MICRO DEVICES (AMD), CISCO SYSTEMS INC (CSCO), APPLIED MATERIALS INC (AMAT) among their top positions. These shared names account for the 31.8% weight overlap.
Is it worth holding both XLK and VTI?
XLK and VTI share 31.8% of normalized fund weight across 71 securities. That is significant overlap: the funds reinforce some of the same positions, so combining them may diversify less than expected.
What is the difference between XLK and VTI?
XLK is a technology-sector fund (US Sector – Technology, 0.09% expense ratio) and VTI is a total US market fund (US Total Market, 0.03% expense ratio). The dataset includes 73 XLK holdings as of 2026-08-24 and 3485 VTI holdings as of 2026-08-24.
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