VB vs VO: how much do they overlap?
Vanguard Small-Cap ETF (VB) · Vanguard Mid-Cap ETF (VO)
overlap by weight · 37 shared holdings
VB: 1312 holdings (as of 2026-03-31) · VO: 289 holdings (as of 2026-03-31)
Low overlap
What this means
VB and VO 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 VB | in VO |
|---|---|---|---|
| Ciena Corp | CIEN | 0.38% | 0.3% |
| Lumentum Holdings Inc | LITE | 0.35% | 0.27% |
| Comfort Systems USA Inc | FIX | 0.34% | 0.26% |
| Coherent Corp | COHR | 0.31% | 0.24% |
| EQT Corp | EQT | 0.28% | 0.22% |
| Rocket Lab Corp | RKLB | 0.26% | 0.2% |
| Bloom Energy Corp | BE | 0.25% | 0.2% |
| Insmed Inc | INSM | 0.25% | 0.19% |
| Dow Inc | DOW | 0.21% | 0.16% |
| Texas Pacific Land Corp | TPL | 0.19% | 0.15% |
FAQ
How much do VB and VO overlap?
VB and VO have a 4.4% overlap by weight, sharing 37 holdings (out of 1312 in VB and 289 in VO), based on official issuer holdings as of 2026-03-31.
What does 4.4% overlap mean?
VB and VO hold mostly different stocks. Combining them genuinely spreads your exposure across different parts of the market.
Which stocks do VB and VO both hold?
The largest shared positions are Ciena Corp, Lumentum Holdings Inc, Comfort Systems USA Inc, Coherent Corp, EQT Corp. The full list of top shared holdings with weights in each fund is shown on this page.