MDY vs VB: how much do they overlap?
SPDR S&P MIDCAP 400 ETF Trust (MDY) · Vanguard Small-Cap ETF (VB)
overlap by weight · 397 shared holdings
MDY: 400 holdings (as of 09-Jul-2026) · VB: 1312 holdings (as of 2026-03-31)
Note: the two funds' latest official filings have different dates, which can understate overlap slightly for funds tracking similar indexes.
Moderate overlap
What this means
MDY and VB share a meaningful slice of holdings. They are related but not interchangeable; check the shared names below to see where your exposure doubles up.
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 MDY | in VB |
|---|---|---|---|
| Technipfmc Plc | FTI | 0.78% | 0.39% |
| United Therapeutics Corporation | UTHR | 0.65% | 0.36% |
| Curtiss-Wright Corporation | CW | 0.78% | 0.35% |
| Xpo Inc. | XPO | 0.68% | 0.3% |
| Royal Gold Inc. | RGLD | 0.45% | 0.3% |
| Woodward Inc. | WWD | 0.67% | 0.3% |
| Us Foods Holding Corp. | USFD | 0.61% | 0.28% |
| Mastec Inc. | MTZ | 0.66% | 0.28% |
| Ati Inc | ATI | 0.71% | 0.28% |
| Nvent Electric Plc | NVT | 0.71% | 0.27% |
FAQ
How much do MDY and VB overlap?
MDY and VB have a 44.1% overlap by weight, sharing 397 holdings (out of 400 in MDY and 1312 in VB), based on official issuer holdings as of 09-Jul-2026.
What does 44.1% overlap mean?
MDY and VB share a meaningful slice of holdings. They are related but not interchangeable; check the shared names below to see where your exposure doubles up.
Which stocks do MDY and VB both hold?
The largest shared positions are Technipfmc Plc, United Therapeutics Corporation, Curtiss-Wright Corporation, Xpo Inc., Royal Gold Inc.. The full list of top shared holdings with weights in each fund is shown on this page.