IJR vs IWM overlap - what they share and where they differ
IJR and IWM share 45.0% of their weight across 517 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 IWM
45.0%
517 shared positions
IJR
iShares Core S&P Small-Cap ETF
Reported positions cover 98% of the fund, 598 positions · Jun 30, 2026
Top 10: 5.8%·Holdings of IJR
IWM
iShares Russell 2000 ETF
Reported positions cover 100% of the fund, 1,785 positions · Jun 30, 2026
Top 10: 3.4%·Holdings of IWM
Reported positions cover IJR 98%, IWM 100% of each fund. An overlap cannot exceed the smaller coverage, so a low figure can mean little overlap or thin reporting.
IWM vs IJR side by side
IJRiShares Core S&P Small-Cap ETF
598
stock positions reported to the SEC
20.4% of its weight is in 81 names IWM does not hold
IWMiShares Russell 2000 ETF
1,785
stock positions reported to the SEC
54.6% of its weight is in 1,268 names IJR does not hold
Where each fund's weight sits
Largest sectors for both funds
The widest gap is Consumer Cyclical: IJR has 11.6 points more of it.
The figures side by side
| IJR | IWM | |
|---|---|---|
| Filing date | Jun 30, 2026 | Jun 30, 2026 |
| Stock positions reported | 598 | 1,785 |
| Weight of the ten largest | 5.8% | 3.4% |
| Largest position | FORM 0.7% | MOG.A 0.4% |
| Held alone | 81 positions, 20.4% | 1,268 positions, 54.6% |
| Covered by stock positions | 98% | 100% |
Holdings they share
| Stock | In IJR | In IWM | Counted |
|---|---|---|---|
| BTSGBRIGHTSPRING HEALTH SERVICES INC | 0.60% | 0.35% | 0.35% |
| VSATVIASAT INC | 0.66% | 0.35% | 0.35% |
| AGXARGAN INC | 0.60% | 0.34% | 0.34% |
| MXLMAXLINEAR INC | 0.58% | 0.34% | 0.34% |
| KRYSKRYSTAL BIOTECH INC | 0.53% | 0.30% | 0.30% |
| ESEESCO TECHNOLOGIES INC | 0.49% | 0.29% | 0.29% |
| ALKSALKERMES PLC | 0.47% | 0.27% | 0.27% |
| SNEXSTONEX GROUP INC | 0.46% | 0.27% | 0.27% |
| GKOSGLAUKOS CORP | 0.44% | 0.25% | 0.25% |
| NPOENPRO INC | 0.43% | 0.25% | 0.25% |
What each holds alone
The heaviest positions one fund reports and the other does not.
Only in IJR
Only in IWM
Questions people ask
Is IJR the same as IWM?
45.0% of their weight sits in the same 517 holdings. IJR also reports FORM, MOH, ESI, which the other does not. IWM also reports MOG.A, HUT, CYTK, which the other does not.
How is the overlap between IJR and IWM 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 IWM, so the number cannot exceed the smaller coverage.
Which holds more, IWM or IJR?
IJR reports 598 stock positions and IWM reports 1,785. 20.4% of IJR's weight sits in names IWM does not hold, and 54.6% of IWM's weight in names IJR does not hold. The ten largest positions are 5.8% of IJR and 3.4% of IWM.
How do IJR and IWM differ by sector?
The widest gap is Consumer Cyclical: IJR has 11.6 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.