OEF vs VOOG overlap - what they share and where they differ
OEF and VOOG share 69.3% of their weight across 45 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.
OEF and VOOG
69.3%
45 shared positions
OEF
iShares S&P 100 ETF
Reported positions cover 100% of the fund, 101 positions · Jun 30, 2026
Top 10: 52.8%·Holdings of OEF
VOOG
VANGUARD S&P 500 GROWTH INDEX FUND
Reported positions cover 100% of the fund, 143 positions · May 31, 2026
Top 10: 62.5%·Holdings of VOOG
Reported positions cover OEF 100%, VOOG 100% of each fund. An overlap cannot exceed the smaller coverage, so a low figure can mean little overlap or thin reporting.
VOOG vs OEF side by side
OEFiShares S&P 100 ETF
101
stock positions reported to the SEC
21.6% of its weight is in 56 names VOOG does not hold
VOOGVANGUARD S&P 500 GROWTH INDEX FUND
143
stock positions reported to the SEC
14.6% of its weight is in 98 names OEF does not hold
Where each fund's weight sits
Largest sectors for both funds
The widest gap is Technology: VOOG has 13.1 points more of it.
The figures side by side
| OEF | VOOG | |
|---|---|---|
| Filing date | Jun 30, 2026 | May 31, 2026 |
| Stock positions reported | 101 | 143 |
| Weight of the ten largest | 52.8% | 62.5% |
| Largest position | NVDA 10.5% | NVDA 14.3% |
| Held alone | 56 positions, 21.6% | 98 positions, 14.6% |
| Covered by stock positions | 100% | 100% |
Holdings they share
| Stock | In OEF | In VOOG | Counted |
|---|---|---|---|
| NVDANVIDIA CORP | 10.47% | 14.26% | 10.47% |
| GOOGLALPHABET INC | 8.14% | 11.05% | 8.14% |
| AAPLAPPLE INC | 9.18% | 6.37% | 6.37% |
| MSFTMICROSOFT CORP | 5.99% | 9.29% | 5.99% |
| AMZNAMAZON.COM INC | 5.04% | 3.90% | 3.90% |
| AVGOBROADCOM INC | 3.86% | 5.89% | 3.86% |
| MUMICRON TECHNOLOGY INC | 2.81% | 3.04% | 2.81% |
| METAMETA PLATFORMS INC | 2.67% | 3.85% | 2.67% |
| TSLATESLA INC | 2.56% | 2.11% | 2.11% |
| AMDADVANCED MICRO DEVICES INC | 2.05% | 2.34% | 2.05% |
What each holds alone
The heaviest positions one fund reports and the other does not.
Only in OEF
Only in VOOG
Questions people ask
Is OEF the same as VOOG?
69.3% of their weight sits in the same 45 holdings. OEF also reports INTC, XOM, WMT, which the other does not. VOOG also reports KLAC, SANDISK CORP/DE, APH, which the other does not.
How is the overlap between OEF and VOOG 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 OEF and 100% of VOOG, so the number cannot exceed the smaller coverage.
Which holds more, VOOG or OEF?
OEF reports 101 stock positions and VOOG reports 143. 21.6% of OEF's weight sits in names VOOG does not hold, and 14.6% of VOOG's weight in names OEF does not hold. The ten largest positions are 52.8% of OEF and 62.5% of VOOG.
How do OEF and VOOG differ by sector?
The widest gap is Technology: VOOG has 13.1 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
VOOG 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.