IJR vs IWO overlap - what they share and where they differ
IJR and IWO share 40.1% of their weight across 280 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.
IJR and IWO
40.1%
280 shared positions
IJR
iShares Core S&P Small-Cap ETF
Reported positions cover 98% of the fund, 598 positions · Jun 30, 2026
Top 10: 5.9%·Holdings of IJR
IWO
iShares Russell 2000 Growth ETF
Reported positions cover 100% of the fund, 1,110 positions · Jun 30, 2026
Top 10: 6.0%·Holdings of IWO
Reported positions cover IJR 98%, IWO 100% of each fund. An overlap cannot exceed the smaller coverage, so a low figure can mean little overlap or thin reporting.
IWO vs IJR side by side
IJRiShares Core S&P Small-Cap ETF
598
stock positions reported to the SEC
48.3% of its weight is in 318 names IWO does not hold
IWOiShares Russell 2000 Growth ETF
1,110
stock positions reported to the SEC
55.4% of its weight is in 830 names IJR does not hold
Where each fund's weight sits
Largest sectors for both funds
The widest gap is Financial Services: IJR has 14.8 points more of it.
The figures side by side
| IJR | IWO | |
|---|---|---|
| Filing date | Jun 30, 2026 | Jun 30, 2026 |
| Stock positions reported | 598 | 1,110 |
| Weight of the ten largest | 5.9% | 6.0% |
| Largest position | FORM 0.7% | MOG.A 0.7% |
| Held alone | 318 positions, 48.3% | 830 positions, 55.4% |
| Covered by stock positions | 98% | 100% |
Holdings they share
| Stock | In IJR | In IWO | Counted |
|---|---|---|---|
| AGXARGAN INC | 0.60% | 0.66% | 0.60% |
| BTSGBRIGHTSPRING HEALTH SERVICES INC | 0.60% | 0.68% | 0.60% |
| MXLMAXLINEAR INC | 0.58% | 0.66% | 0.58% |
| KRYSKRYSTAL BIOTECH INC | 0.53% | 0.58% | 0.53% |
| ESEESCO TECHNOLOGIES INC | 0.49% | 0.56% | 0.49% |
| SNEXSTONEX GROUP INC | 0.46% | 0.52% | 0.46% |
| GKOSGLAUKOS CORP | 0.44% | 0.48% | 0.44% |
| PLXSPLEXUS CORP | 0.44% | 0.49% | 0.44% |
| RHPRYMAN HOSPITALITY PROPERTIES INC | 0.44% | 0.48% | 0.44% |
| NPOENPRO INC | 0.43% | 0.46% | 0.43% |
What each holds alone
The heaviest positions one fund reports and the other does not.
Only in IJR
Only in IWO
Questions people ask
Is IJR the same as IWO?
40.1% of their weight sits in the same 280 holdings. IJR also reports FORM, VSAT, MOH, which the other does not. IWO also reports MOG.A, FROG, FCFS, which the other does not.
How is the overlap between IJR 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 IJR and 100% of IWO, so the number cannot exceed the smaller coverage.
Which holds more, IWO or IJR?
IJR reports 598 stock positions and IWO reports 1,110. 48.3% of IJR's weight sits in names IWO does not hold, and 55.4% of IWO's weight in names IJR does not hold. The ten largest positions are 5.9% of IJR and 6.0% of IWO.
How do IJR and IWO differ by sector?
The widest gap is Financial Services: IJR has 14.8 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
IJR 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.