IUSG vs VONG overlap - what they share and where they differ
IUSG and VONG share 68.5% of their weight across 151 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 VONG
68.5%
151 shared positions
IUSG
iShares Core S&P U.S. Growth ETF
Reported positions cover 100% of the fund, 369 positions · Jun 30, 2026
Top 10: 56.1%·Holdings of IUSG
VONG
VANGUARD RUSSELL 1000 GROWTH INDEX FUND
Reported positions cover 100% of the fund, 311 positions · May 31, 2026
Top 10: 62.8%·Holdings of VONG
Reported positions cover IUSG 100%, VONG 100% of each fund. An overlap cannot exceed the smaller coverage, so a low figure can mean little overlap or thin reporting.
VONG vs IUSG side by side
IUSGiShares Core S&P U.S. Growth ETF
369
stock positions reported to the SEC
20.5% of its weight is in 218 names VONG does not hold
VONGVANGUARD RUSSELL 1000 GROWTH INDEX FUND
311
stock positions reported to the SEC
13.1% of its weight is in 160 names IUSG does not hold
Where each fund's weight sits
Largest sectors for both funds
The widest gap is Consumer Cyclical: VONG has 4.5 points more of it.
The figures side by side
| IUSG | VONG | |
|---|---|---|
| Filing date | Jun 30, 2026 | May 31, 2026 |
| Stock positions reported | 369 | 311 |
| Weight of the ten largest | 56.1% | 62.8% |
| Largest position | NVDA 13.0% | NVDA 13.1% |
| Held alone | 218 positions, 20.5% | 160 positions, 13.1% |
| Covered by stock positions | 100% | 100% |
Holdings they share
| Stock | In IUSG | In VONG | Counted |
|---|---|---|---|
| NVDANVIDIA CORP | 12.95% | 13.07% | 12.95% |
| MSFTMICROSOFT CORP | 7.41% | 8.96% | 7.41% |
| GOOGLALPHABET INC | 10.06% | 7.06% | 7.06% |
| AAPLAPPLE INC | 5.68% | 11.95% | 5.68% |
| AVGOBROADCOM INC | 4.78% | 5.77% | 4.78% |
| AMZNAMAZON.COM INC | 3.31% | 5.06% | 3.31% |
| METAMETA PLATFORMS INC | 3.31% | 3.19% | 3.19% |
| LLYELI LILLY & COMPANY | 2.54% | 2.67% | 2.54% |
| TSLATESLA INC | 1.96% | 3.48% | 1.96% |
| AMDADVANCED MICRO DEVICES INC | 2.53% | 1.46% | 1.46% |
What each holds alone
The heaviest positions one fund reports and the other does not.
Only in IUSG
Only in VONG
Questions people ask
Is IUSG the same as VONG?
68.5% of their weight sits in the same 151 holdings. IUSG also reports MU, BRK.A, JPM, which the other does not. VONG also reports COST, GENERAL ELECTRIC CO, HD, which the other does not.
How is the overlap between IUSG and VONG 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 VONG, so the number cannot exceed the smaller coverage.
Which holds more, VONG or IUSG?
IUSG reports 369 stock positions and VONG reports 311. 20.5% of IUSG's weight sits in names VONG does not hold, and 13.1% of VONG's weight in names IUSG does not hold. The ten largest positions are 56.1% of IUSG and 62.8% of VONG.
How do IUSG and VONG differ by sector?
The widest gap is Consumer Cyclical: VONG 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
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.