MDY vs VBR overlap - what they share and where they differ
MDY and VBR share 39.5% of their weight across 249 common positions, read from what each fund reported to the SEC.
Each week Ploutos reads the reported positions of the largest US equity ETFs and measures, pair by pair, the weight they share: for every stock both funds hold, the smaller of the two weights counts. Two funds tracking the same index land near 100%. A sector fund inside a broad index fund lands at roughly that sector's weight.
MDY and VBR
39.5%
249 shared positions
MDY
State Street SPDR S&P MidCap 400SM ETF Trust
Reported positions cover 99% of the fund, 400 positions · Jun 30, 2026
Top 10: 7.7%·Holdings of MDY
VBR
VANGUARD SMALL-CAP VALUE INDEX FUND
Reported positions cover 100% of the fund, 817 positions · Jun 30, 2026
Top 10: 5.9%·Holdings of VBR
Reported positions cover MDY 99%, VBR 100% of each fund. An overlap cannot exceed the smaller coverage, so a low figure can mean little overlap or thin reporting.
VBR vs MDY side by side
MDYState Street SPDR S&P MidCap 400SM ETF Trust
400
stock positions reported to the SEC
45.1% of its weight is in 151 names VBR does not hold
VBRVANGUARD SMALL-CAP VALUE INDEX FUND
817
stock positions reported to the SEC
60.2% of its weight is in 568 names MDY does not hold
Where each fund's weight sits
Largest sectors for both funds
The widest gap is Real Estate: VBR has 10.7 points more of it.
The figures side by side
| MDY | VBR | |
|---|---|---|
| Filing date | Jun 30, 2026 | Jun 30, 2026 |
| Stock positions reported | 400 | 817 |
| Weight of the ten largest | 7.7% | 5.9% |
| Largest position | TWLO 0.9% | JBL 0.9% |
| Held alone | 151 positions, 45.1% | 568 positions, 60.2% |
| Covered by stock positions | 99% | 100% |
Holdings they share
| Stock | In MDY | In VBR | Counted |
|---|---|---|---|
| USFDUS FOODS HOLDING CORP | 0.62% | 0.48% | 0.48% |
| RSRELIANCE INC | 0.52% | 0.41% | 0.41% |
| SNXTD SYNNEX CORP | 0.55% | 0.41% | 0.41% |
| EWBCEAST WEST BANCORP INC | 0.49% | 0.38% | 0.38% |
| PFGCPERFORMANCE FOOD GROUP COMPANY | 0.48% | 0.36% | 0.36% |
| WCCWESCO INTERNATIONAL INC | 0.46% | 0.36% | 0.36% |
| APGAPI GROUP CORP | 0.45% | 0.35% | 0.35% |
| NLYANNALY CAPITAL MANAGEMENT INC | 0.45% | 0.35% | 0.35% |
| THCTENET HEALTHCARE CORP | 0.44% | 0.35% | 0.35% |
| RRXREGAL REXNORD CORP | 0.43% | 0.34% | 0.34% |
What each holds alone
The heaviest positions one fund reports and the other does not.
Only in MDY
Only in VBR
Questions people ask
Is MDY the same as VBR?
39.5% of their weight sits in the same 249 holdings. MDY also reports TWLO, CRS, CW, which the other does not. VBR also reports JBL, NRG, TPR, which the other does not.
How is the overlap between MDY and VBR measured?
For every stock both funds report, the smaller of the two weights counts, and the sum is the overlap. The reported positions cover 99% of MDY and 100% of VBR, so the number cannot exceed the smaller coverage.
Which holds more, VBR or MDY?
MDY reports 400 stock positions and VBR reports 817. 45.1% of MDY's weight sits in names VBR does not hold, and 60.2% of VBR's weight in names MDY does not hold. The ten largest positions are 7.7% of MDY and 5.9% of VBR.
How do MDY and VBR differ by sector?
The widest gap is Real Estate: VBR has 10.7 points more of it. Sectors come from each holding's SIC code in its SEC record, summed by the weight the fund reports.
Where do the numbers come from?
From each fund's own N-PORT filing to the SEC, which lists every position and its weight. The comparison uses every equity position the fund reports; cash, futures and bonds are not counted, which is why a coverage figure sits next to every result. Holdings change between filings.
Other pairs with these funds
MDY against other funds in the table
Add a third fund in the tool·All fund pairs
Descriptive data from public SEC filings. Nothing on this page is a recommendation to buy, sell or hold any fund or stock, and holdings change between filings.