IWX vs OEF overlap - what they share and where they differ
IWX and OEF share 52.4% of their weight across 77 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.
IWX and OEF
52.4%
77 shared positions
IWX
iShares Russell Top 200 Value ETF
Reported positions cover 100% of the fund, 150 positions · Jun 30, 2026
Top 10: 39.0%·Holdings of IWX
OEF
iShares S&P 100 ETF
Reported positions cover 100% of the fund, 100 positions · Jun 30, 2026
Top 10: 52.8%·Holdings of OEF
Reported positions cover IWX 100%, OEF 100% of each fund. An overlap cannot exceed the smaller coverage, so a low figure can mean little overlap or thin reporting.
OEF vs IWX side by side
IWXiShares Russell Top 200 Value ETF
150
stock positions reported to the SEC
20.2% of its weight is in 73 names OEF does not hold
OEFiShares S&P 100 ETF
100
stock positions reported to the SEC
42.6% of its weight is in 23 names IWX does not hold
Where each fund's weight sits
Largest sectors for both funds
The widest gap is Technology: OEF has 31.7 points more of it.
The figures side by side
| IWX | OEF | |
|---|---|---|
| Filing date | Jun 30, 2026 | Jun 30, 2026 |
| Stock positions reported | 150 | 100 |
| Weight of the ten largest | 39.0% | 52.8% |
| Largest position | AMZN 8.3% | NVDA 10.5% |
| Held alone | 73 positions, 20.2% | 23 positions, 42.6% |
| Covered by stock positions | 100% | 100% |
Holdings they share
| Stock | In IWX | In OEF | Counted |
|---|---|---|---|
| AAPLAPPLE INC | 7.53% | 9.18% | 7.53% |
| MSFTMICROSOFT CORP | 5.44% | 5.99% | 5.44% |
| AMZNAMAZON.COM INC | 8.32% | 5.04% | 5.04% |
| BRK.ABERKSHIRE HATHAWAY INC | 3.66% | 1.98% | 1.98% |
| JPMJP MORGAN CHASE & COMPANY | 3.44% | 1.89% | 1.89% |
| INTCINTEL CORP | 2.40% | 1.43% | 1.43% |
| JNJJOHNSON & JOHNSON | 2.40% | 1.32% | 1.32% |
| XOMEXXONMOBIL HOLDINGS CORP | 2.23% | 1.22% | 1.22% |
| WMTWALMART INC | 1.78% | 1.07% | 1.07% |
| CSCOCISCO SYSTEMS INC | 1.82% | 1.00% | 1.00% |
What each holds alone
The heaviest positions one fund reports and the other does not.
Only in IWX
Only in OEF
Questions people ask
Is IWX the same as OEF?
52.4% of their weight sits in the same 77 holdings. IWX also reports ADI, WELL, EATON CORP PLC, which the other does not. OEF also reports NVDA, GOOGL, AVGO, which the other does not.
How is the overlap between IWX and OEF 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 IWX and 100% of OEF, so the number cannot exceed the smaller coverage.
Which holds more, OEF or IWX?
IWX reports 150 stock positions and OEF reports 100. 20.2% of IWX's weight sits in names OEF does not hold, and 42.6% of OEF's weight in names IWX does not hold. The ten largest positions are 39.0% of IWX and 52.8% of OEF.
How do IWX and OEF differ by sector?
The widest gap is Technology: OEF has 31.7 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.