VO vs XLK ETF holdings comparison
Vanguard Mid-Cap ETF (VO) · Technology Select Sector SPDR ETF (XLK)
VO and XLK overlap by 9% by portfolio weight. The remaining 91.0 percentage points are not counted as shared holdings weight by this calculation. They share 28 stocks; the largest shared position is Seagate Technology Holdings PLC (STX), contributing 0.98% to the overlap.
The holdings dates differ. This can slightly understate overlap for funds tracking similar indexes.
What this means
VO and XLK share a smaller portion of their portfolio weight in the same underlying stocks. OverlapCheck labels this "low holdings overlap" using house ranges of 70% or more, 30% to under 70%, and under 30%. These descriptive ranges are not industry standards or investment guidance. Holdings overlap does not measure correlation, volatility, geographic or factor exposure, fees, or suitability.
Overlap by weight sums the smaller of the two funds' weights for every stock they both hold. It answers "how much of my money is in the same stocks either way?" See methodology.
This comparison covers normalized equity positions represented in the dataset. Cash, derivatives, options, structured notes, and other non-equity assets are not included, so the result is not a complete comparison of every asset or risk in either fund.
Top shared holdings
| Company | Ticker | in VO | in XLK |
|---|---|---|---|
| Seagate Technology Holdings PLC | STX | 1.05% | 0.98% |
| Western Digital Corp | WDC | 1.06% | 0.79% |
| Hewlett Packard Enterprise Co | HPE | 0.58% | 0.53% |
| Lumentum Holdings Inc | LITE | 0.65% | 0.52% |
| Datadog Inc | DDOG | 0.83% | 0.51% |
| Fortinet Inc | FTNT | 0.46% | 0.65% |
| Motorola Solutions Inc | MSI | 0.67% | 0.41% |
| Monolithic Power Systems Inc | MPWR | 0.62% | 0.38% |
| Keysight Technologies Inc | KEYS | 0.58% | 0.36% |
| Teradyne Inc | TER | 0.73% | 0.35% |
Holdings only in VO or XLK
VO has 254 fund-only positions representing approximately 86.5 percentage points of reported exposure; XLK has 48 fund-only positions representing approximately 90.8 percentage points of reported exposure. These are positions whose normalized security identifiers appear in one issuer file but not the other.
Largest positions only in VO
| Company | Ticker | Weight |
|---|---|---|
| Vertiv Holdings Co | VRT | 1.22% |
| Quanta Services Inc | PWR | 1.04% |
| Howmet Aerospace Inc | HWM | 1.04% |
| Cummins Inc | CMI | 0.95% |
| Bloom Energy Corp | BE | 0.79% |
| Constellation Energy Corp | CEG | 0.78% |
| Robinhood Markets Inc | HOOD | 0.77% |
| Cloudflare Inc | NET | 0.76% |
| Valero Energy Corp | VLO | 0.75% |
| Royal Caribbean Cruises Ltd | RCL | 0.74% |
Largest positions only in XLK
| Company | Ticker | Weight |
|---|---|---|
| Nvidia Corp | NVDA | 15.42% |
| Apple Inc | AAPL | 13.73% |
| Microsoft Corp | MSFT | 10.73% |
| Advanced Micro Devices | AMD | 5.07% |
| Broadcom Inc | AVGO | 4.74% |
| Micron Technology Inc | MU | 4.29% |
| Intel Corp | INTC | 2.98% |
| Palantir Technologies Inc A | PLTR | 2.56% |
| Cisco Systems Inc | CSCO | 2.53% |
| Applied Materials Inc | AMAT | 2.26% |
FAQ
How much do VO and XLK overlap?
VO and XLK have 9% overlap by weight, sharing 28 equity positions (out of 282 in VO and 76 in XLK). The official holdings files used are dated 2026-06-30 for VO and 2026-10-08 for XLK.
What does 9% overlap mean?
VO and XLK share a smaller portion of their portfolio weight in the same underlying stocks. OverlapCheck labels this "low holdings overlap" using house ranges of 70% or more, 30% to under 70%, and under 30%. These descriptive ranges are not industry standards or investment guidance. Holdings overlap does not measure correlation, volatility, geographic or factor exposure, fees, or suitability.
Which stocks do VO and XLK both hold?
The largest shared positions are Seagate Technology Holdings PLC, Western Digital Corp, Hewlett Packard Enterprise Co, Lumentum Holdings Inc, Datadog Inc. The top shared holdings with weights in each fund are shown on this page.
What holdings are different between VO and XLK?
VO has 254 positions not found in XLK, while XLK has 48 positions not found in VO. The largest fund-only positions and their weights are shown on this page.