IYW vs VUG overlap - what they share and where they differ
IYW and VUG share 68.6% of their weight across 47 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.
IYW and VUG
68.6%
47 shared positions
IYW
iShares U.S. Technology ETF
Reported positions cover 100% of the fund, 148 positions · Jul 31, 2026
Top 10: 67.3%·Holdings of IYW
VUG
VANGUARD GROWTH INDEX FUND
Reported positions cover 100% of the fund, 144 positions · Jun 30, 2026
Top 10: 63.1%·Holdings of VUG
Reported positions cover IYW 100%, VUG 100% of each fund. An overlap cannot exceed the smaller coverage, so a low figure can mean little overlap or thin reporting.
VUG vs IYW side by side
IYWiShares U.S. Technology ETF
148
stock positions reported to the SEC
13.5% of its weight is in 101 names VUG does not hold
VUGVANGUARD GROWTH INDEX FUND
144
stock positions reported to the SEC
31.4% of its weight is in 97 names IYW does not hold
Where each fund's weight sits
Largest sectors for both funds
The widest gap is Technology: IYW has 27.2 points more of it.
The figures side by side
| IYW | VUG | |
|---|---|---|
| Filing date | Jul 31, 2026 | Jun 30, 2026 |
| Stock positions reported | 148 | 144 |
| Weight of the ten largest | 67.3% | 63.1% |
| Largest position | NVDA 13.7% | NVDA 12.6% |
| Held alone | 101 positions, 13.5% | 97 positions, 31.4% |
| Covered by stock positions | 100% | 100% |
Holdings they share
| Stock | In IYW | In VUG | Counted |
|---|---|---|---|
| NVDANVIDIA CORPORATION | 13.65% | 12.63% | 12.63% |
| AAPLAPPLE INC. | 13.15% | 11.67% | 11.67% |
| GOOGLALPHABET INC. | 11.23% | 10.29% | 10.29% |
| MSFTMICROSOFT CORPORATION | 10.68% | 7.61% | 7.61% |
| AVGOBROADCOM INC. | 4.62% | 4.28% | 4.28% |
| METAMETA PLATFORMS, INC. | 3.79% | 3.41% | 3.41% |
| AMDADVANCED MICRO DEVICES, INC. | 3.06% | 2.62% | 2.62% |
| AMATAPPLIED MATERIALS, INC. | 2.10% | 1.60% | 1.60% |
| LRCXLAM RESEARCH CORPORATION | 1.91% | 1.51% | 1.51% |
| KLACKLA CORPORATION | 1.25% | 1.10% | 1.10% |
What each holds alone
The heaviest positions one fund reports and the other does not.
Only in IYW
Only in VUG
Questions people ask
Is IYW the same as VUG?
68.6% of their weight sits in the same 47 holdings. IYW also reports MU, IBM, ADI, which the other does not. VUG also reports AMZN, TSLA, LLY, which the other does not.
How is the overlap between IYW and VUG 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 IYW and 100% of VUG, so the number cannot exceed the smaller coverage.
Which holds more, VUG or IYW?
IYW reports 148 stock positions and VUG reports 144. 13.5% of IYW's weight sits in names VUG does not hold, and 31.4% of VUG's weight in names IYW does not hold. The ten largest positions are 67.3% of IYW and 63.1% of VUG.
How do IYW and VUG differ by sector?
The widest gap is Technology: IYW has 27.2 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.
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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.