IUSG vs IWF overlap - what they share and where they differ
IUSG and IWF share 75.5% of their weight across 184 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.
IUSG and IWF
75.5%
184 shared positions
IUSG
iShares Core S&P U.S. Growth ETF
Reported positions cover 100% of the fund, 388 positions · Jun 30, 2026
Top 10: 56.1%·Holdings of IUSG
IWF
iShares Russell 1000 Growth ETF
Reported positions cover 100% of the fund, 365 positions · Jun 30, 2026
Top 10: 57.1%·Holdings of IWF
Reported positions cover IUSG 100%, IWF 100% of each fund. An overlap cannot exceed the smaller coverage, so a low figure can mean little overlap or thin reporting.
IWF vs IUSG side by side
IUSGiShares Core S&P U.S. Growth ETF
388
stock positions reported to the SEC
14.7% of its weight is in 204 names IWF does not hold
IWFiShares Russell 1000 Growth ETF
365
stock positions reported to the SEC
11.7% of its weight is in 181 names IUSG does not hold
Where each fund's weight sits
Largest sectors for both funds
The widest gap is Technology: IWF has 4.5 points more of it.
The figures side by side
| IUSG | IWF | |
|---|---|---|
| Filing date | Jun 30, 2026 | Jun 30, 2026 |
| Stock positions reported | 388 | 365 |
| Weight of the ten largest | 56.1% | 57.1% |
| Largest position | NVDA 13.0% | NVDA 13.8% |
| Held alone | 204 positions, 14.7% | 181 positions, 11.7% |
| Covered by stock positions | 100% | 100% |
Holdings they share
| Stock | In IUSG | In IWF | Counted |
|---|---|---|---|
| NVDANVIDIA CORP | 12.95% | 13.83% | 12.95% |
| GOOGLALPHABET INC | 10.07% | 11.15% | 10.07% |
| AAPLAPPLE INC | 5.68% | 6.72% | 5.68% |
| AVGOBROADCOM INC | 4.78% | 5.21% | 4.78% |
| MSFTMICROSOFT CORP | 7.41% | 4.11% | 4.11% |
| MUMICRON TECHNOLOGY INC | 3.48% | 3.86% | 3.48% |
| METAMETA PLATFORMS INC | 3.31% | 3.00% | 3.00% |
| LLYELI LILLY & COMPANY | 2.54% | 2.84% | 2.54% |
| AMDADVANCED MICRO DEVICES INC | 2.53% | 2.80% | 2.53% |
| TSLATESLA INC | 1.96% | 3.64% | 1.96% |
What each holds alone
The heaviest positions one fund reports and the other does not.
Only in IUSG
Only in IWF
Questions people ask
Is IUSG the same as IWF?
75.5% of their weight sits in the same 184 holdings. IUSG also reports BRK.A, JPM, JNJ, which the other does not. IWF also reports TXN, HD, WDC, which the other does not.
How is the overlap between IUSG and IWF 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 IUSG and 100% of IWF, so the number cannot exceed the smaller coverage.
Which holds more, IWF or IUSG?
IUSG reports 388 stock positions and IWF reports 365. 14.7% of IUSG's weight sits in names IWF does not hold, and 11.7% of IWF's weight in names IUSG does not hold. The ten largest positions are 56.1% of IUSG and 57.1% of IWF.
How do IUSG and IWF differ by sector?
The widest gap is Technology: IWF 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.
Other pairs with these funds
IUSG against other funds in the table
IWF 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.