VO vs XLK: how much do they overlap?
Vanguard Mid-Cap ETF (VO) · Technology Select Sector SPDR ETF (XLK)
overlap by weight · 33 shared holdings
VO: 289 holdings (as of 2026-03-31) · XLK: 74 holdings (as of 09-Jul-2026)
Note: the two funds' latest official filings have different dates, which can understate overlap slightly for funds tracking similar indexes.
Low overlap
What this means
VO and XLK hold mostly different stocks. Combining them genuinely spreads your exposure across different parts of the market.
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.
Top shared holdings
| Company | Ticker | in VO | in XLK |
|---|---|---|---|
| Western Digital Corp | WDC | 1% | 1.31% |
| Seagate Technology Holdings PLC | STX | 0.93% | 1.31% |
| Corning Inc | GLW | 0.57% | 0.99% |
| Marvell Technology Inc | MRVL | 0.47% | 1.4% |
| Motorola Solutions Inc | MSI | 0.78% | 0.45% |
| Monolithic Power Systems Inc | MPWR | 0.55% | 0.44% |
| Datadog Inc | DDOG | 0.42% | 0.58% |
| TE Connectivity PLC | TEL | 0.67% | 0.38% |
| Teradyne Inc | TER | 0.51% | 0.37% |
| Keysight Technologies Inc | KEYS | 0.53% | 0.36% |
FAQ
How much do VO and XLK overlap?
VO and XLK have a 9.8% overlap by weight, sharing 33 holdings (out of 289 in VO and 74 in XLK), based on official issuer holdings as of 2026-03-31.
What does 9.8% overlap mean?
VO and XLK hold mostly different stocks. Combining them genuinely spreads your exposure across different parts of the market.
Which stocks do VO and XLK both hold?
The largest shared positions are Western Digital Corp, Seagate Technology Holdings PLC, Corning Inc, Marvell Technology Inc, Motorola Solutions Inc. The full list of top shared holdings with weights in each fund is shown on this page.