IJS vs IWO overlap - what they share and where they differ
IJS and IWO share 16.4% of their weight across 162 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.
IJS and IWO
16.4%
162 shared positions
IJS
iShares S&P Small-Cap 600 Value ETF
Reported positions cover 98% of the fund, 458 positions · Jun 30, 2026
Top 10: 8.2%·Holdings of IJS
IWO
iShares Russell 2000 Growth ETF
Reported positions cover 99% of the fund, 975 positions · Jun 30, 2026
Top 10: 6.1%·Holdings of IWO
Reported positions cover IJS 98%, IWO 99% of each fund. An overlap cannot exceed the smaller coverage, so a low figure can mean little overlap or thin reporting.
IWO vs IJS side by side
IJSiShares S&P Small-Cap 600 Value ETF
458
stock positions reported to the SEC
68.8% of its weight is in 296 names IWO does not hold
IWOiShares Russell 2000 Growth ETF
975
stock positions reported to the SEC
79.9% of its weight is in 813 names IJS does not hold
Where each fund's weight sits
Largest sectors for both funds
The widest gap is Healthcare: IWO has 27.4 points more of it.
The figures side by side
| IJS | IWO | |
|---|---|---|
| Filing date | Jun 30, 2026 | Jun 30, 2026 |
| Stock positions reported | 458 | 975 |
| Weight of the ten largest | 8.2% | 6.1% |
| Largest position | MOH 1.3% | MOG.A 0.7% |
| Held alone | 296 positions, 68.8% | 813 positions, 79.9% |
| Covered by stock positions | 98% | 99% |
Holdings they share
| Stock | In IJS | In IWO | Counted |
|---|---|---|---|
| MXLMAXLINEAR INC | 0.66% | 0.66% | 0.66% |
| PLXSPLEXUS CORP | 0.48% | 0.49% | 0.48% |
| UCTTULTRA CLEAN HOLDINGS INC | 0.69% | 0.38% | 0.38% |
| RUSHARUSH ENTERPRISES INC | 0.48% | 0.31% | 0.31% |
| MTRNMATERION CORP | 0.30% | 0.37% | 0.30% |
| MGYMAGNOLIA OIL & GAS CORP | 0.51% | 0.28% | 0.28% |
| POWIPOWER INTEGRATIONS INC | 0.50% | 0.28% | 0.28% |
| GKOSGLAUKOS CORP | 0.27% | 0.48% | 0.27% |
| DIODDIODES INC | 0.54% | 0.25% | 0.25% |
| BCPCBALCHEM CORP | 0.24% | 0.31% | 0.24% |
What each holds alone
The heaviest positions one fund reports and the other does not.
Only in IJS
Only in IWO
Questions people ask
Is IJS the same as IWO?
16.4% of their weight sits in the same 162 holdings. IJS also reports MOH, MTCH, EMN, which the other does not. IWO also reports MOG.A, BTSG, AGX, which the other does not.
How is the overlap between IJS and IWO measured?
For every stock both funds report, the smaller of the two weights counts, and the sum is the overlap. The reported positions cover 98% of IJS and 99% of IWO, so the number cannot exceed the smaller coverage.
Which holds more, IWO or IJS?
IJS reports 458 stock positions and IWO reports 975. 68.8% of IJS's weight sits in names IWO does not hold, and 79.9% of IWO's weight in names IJS does not hold. The ten largest positions are 8.2% of IJS and 6.1% of IWO.
How do IJS and IWO differ by sector?
The widest gap is Healthcare: IWO has 27.4 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.