IWS vs VBR overlap - what they share and where they differ
IWS and VBR share 34.2% of their weight across 357 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.
IWS and VBR
34.2%
357 shared positions
IWS
iShares Russell Mid-Cap Value ETF
Reported positions cover 100% of the fund, 709 positions · Jun 30, 2026
Top 10: 5.9%·Holdings of IWS
VBR
VANGUARD SMALL-CAP VALUE INDEX FUND
Reported positions cover 100% of the fund, 827 positions · Jun 30, 2026
Top 10: 5.9%·Holdings of VBR
Reported positions cover IWS 100%, 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 IWS side by side
IWSiShares Russell Mid-Cap Value ETF
709
stock positions reported to the SEC
65.1% of its weight is in 352 names VBR does not hold
VBRVANGUARD SMALL-CAP VALUE INDEX FUND
827
stock positions reported to the SEC
30.2% of its weight is in 470 names IWS does not hold
Where each fund's weight sits
Largest sectors for both funds
The widest gap is Technology: IWS has 12.7 points more of it.
The figures side by side
| IWS | VBR | |
|---|---|---|
| Filing date | Jun 30, 2026 | Jun 30, 2026 |
| Stock positions reported | 709 | 827 |
| Weight of the ten largest | 5.9% | 5.9% |
| Largest position | WARNER BROS DISCOVERY INC 0.6% | JBL 0.9% |
| Held alone | 352 positions, 65.1% | 470 positions, 30.2% |
| Covered by stock positions | 100% | 100% |
Holdings they share
| Stock | In IWS | In VBR | Counted |
|---|---|---|---|
| QQNITY ELECTRONICS INC | 0.34% | 0.37% | 0.34% |
| FLEXFLEX LTD | 0.58% | 0.32% | 0.32% |
| CNCCENTENE CORP | 0.29% | 0.34% | 0.29% |
| ATOATMOS ENERGY CORP | 0.28% | 0.62% | 0.28% |
| STLDSTEEL DYNAMICS INC | 0.28% | 0.34% | 0.28% |
| MKSIMKS INC | 0.27% | 0.32% | 0.27% |
| ILMNILLUMINA INC | 0.26% | 0.27% | 0.26% |
| MRNAMODERNA INC | 0.25% | 0.54% | 0.25% |
| SWSMURFIT WESTROCK PLC | 0.24% | 0.52% | 0.24% |
| FFIVF5 INC | 0.23% | 0.50% | 0.23% |
What each holds alone
The heaviest positions one fund reports and the other does not.
Only in IWS
Only in VBR
Questions people ask
Is IWS the same as VBR?
34.2% of their weight sits in the same 357 holdings. IWS also reports WARNER BROS DISCOVERY INC, DLR, PSX, which the other does not. VBR also reports JBL, NRG, TPR, which the other does not.
How is the overlap between IWS 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 100% of IWS and 100% of VBR, so the number cannot exceed the smaller coverage.
Which holds more, VBR or IWS?
IWS reports 709 stock positions and VBR reports 827. 65.1% of IWS's weight sits in names VBR does not hold, and 30.2% of VBR's weight in names IWS does not hold. The ten largest positions are 5.9% of IWS and 5.9% of VBR.
How do IWS and VBR differ by sector?
The widest gap is Technology: IWS has 12.7 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.
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.