IWF vs IWY overlap - what they share and where they differ
IWF and IWY share 87.7% of their weight across 96 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.
IWF and IWY
87.7%
96 shared positions
IWF
iShares Russell 1000 Growth ETF
Reported positions cover 100% of the fund, 311 positions · Jun 30, 2026
Top 10: 57.2%·Holdings of IWF
IWY
iShares Russell Top 200 Growth ETF
Reported positions cover 100% of the fund, 100 positions · Jun 30, 2026
Top 10: 62.8%·Holdings of IWY
Reported positions cover IWF 100%, IWY 100% of each fund. An overlap cannot exceed the smaller coverage, so a low figure can mean little overlap or thin reporting.
IWY vs IWF side by side
IWFiShares Russell 1000 Growth ETF
311
stock positions reported to the SEC
12.1% of its weight is in 215 names IWY does not hold
IWYiShares Russell Top 200 Growth ETF
100
stock positions reported to the SEC
1.6% of its weight is in 4 names IWF does not hold
Where each fund's weight sits
Largest sectors for both funds
The widest gap is Technology: IWY has 4.5 points more of it.
The figures side by side
| IWF | IWY | |
|---|---|---|
| Filing date | Jun 30, 2026 | Jun 30, 2026 |
| Stock positions reported | 311 | 100 |
| Weight of the ten largest | 57.2% | 62.8% |
| Largest position | NVDA 13.8% | NVDA 14.2% |
| Held alone | 215 positions, 12.1% | 4 positions, 1.6% |
| Covered by stock positions | 100% | 100% |
Holdings they share
| Stock | In IWF | In IWY | Counted |
|---|---|---|---|
| NVDANVIDIA CORPORATION | 13.83% | 14.16% | 13.83% |
| GOOGLALPHABET INC. | 11.15% | 11.51% | 11.15% |
| AAPLAPPLE INC. | 6.72% | 7.14% | 6.72% |
| AVGOBROADCOM INC. | 5.21% | 5.64% | 5.21% |
| MSFTMICROSOFT CORPORATION | 4.11% | 4.56% | 4.11% |
| MUMICRON TECHNOLOGY, INC. | 3.86% | 4.87% | 3.86% |
| TSLATESLA, INC. | 3.64% | 4.59% | 3.64% |
| METAMETA PLATFORMS, INC. | 3.00% | 3.68% | 3.00% |
| LLYELI LILLY AND COMPANY | 2.84% | 3.35% | 2.84% |
| AMDADVANCED MICRO DEVICES, INC. | 2.80% | 3.25% | 2.80% |
What each holds alone
The heaviest positions one fund reports and the other does not.
Only in IWF
Only in IWY
Questions people ask
Is IWF the same as IWY?
87.7% of their weight sits in the same 96 holdings. IWF also reports GENERAL ELECTRIC COMPANY, DDOG, SNOW, which the other does not. IWY also reports GE, NU HOLDINGS LTD, EATON CORP PLC, which the other does not.
How is the overlap between IWF and IWY 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 IWF and 100% of IWY, so the number cannot exceed the smaller coverage.
Which holds more, IWY or IWF?
IWF reports 311 stock positions and IWY reports 100. 12.1% of IWF's weight sits in names IWY does not hold, and 1.6% of IWY's weight in names IWF does not hold. The ten largest positions are 57.2% of IWF and 62.8% of IWY.
How do IWF and IWY differ by sector?
The widest gap is Technology: IWY has 4.5 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.