IJS vs IWM overlap - what they share and where they differ
IJS and IWM share 31.7% of their weight across 409 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 IWM
31.7%
409 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
IWM
iShares Russell 2000 ETF
Reported positions cover 100% of the fund, 1,966 positions · Jun 30, 2026
Top 10: 3.4%·Holdings of IWM
Reported positions cover IJS 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 IJS side by side
IJSiShares S&P Small-Cap 600 Value ETF
458
stock positions reported to the SEC
20.7% of its weight is in 49 names IWM does not hold
IWMiShares Russell 2000 ETF
1,966
stock positions reported to the SEC
68.0% of its weight is in 1,557 names IJS does not hold
Where each fund's weight sits
Largest sectors for both funds
The widest gap is Healthcare: IWM has 18.6 points more of it.
The figures side by side
| IJS | IWM | |
|---|---|---|
| Filing date | Jun 30, 2026 | Jun 30, 2026 |
| Stock positions reported | 458 | 1,966 |
| Weight of the ten largest | 8.2% | 3.4% |
| Largest position | MOH 1.3% | MOG.A 0.4% |
| Held alone | 49 positions, 20.7% | 1,557 positions, 68.0% |
| Covered by stock positions | 98% | 100% |
Holdings they share
| Stock | In IJS | In IWM | Counted |
|---|---|---|---|
| MXLMAXLINEAR INC | 0.66% | 0.34% | 0.34% |
| GKOSGLAUKOS CORP | 0.27% | 0.25% | 0.25% |
| PLXSPLEXUS CORP | 0.48% | 0.25% | 0.25% |
| LUMNLUMEN TECHNOLOGIES INC | 0.43% | 0.23% | 0.23% |
| ACAARCOSA INC | 0.28% | 0.22% | 0.22% |
| FBNCFIRST BANCORP | 0.34% | 0.22% | 0.22% |
| MACMACERICH COMPANY (THE) | 0.37% | 0.22% | 0.22% |
| KLICKULICKE AND SOFFA INDUSTRIES INC | 0.75% | 0.21% | 0.21% |
| TRNOTERRENO REALTY CORP | 0.22% | 0.21% | 0.21% |
| VSHVISHAY INTERTECHNOLOGY INC | 0.72% | 0.21% | 0.21% |
What each holds alone
The heaviest positions one fund reports and the other does not.
Only in IJS
Only in IWM
Questions people ask
Is IJS the same as IWM?
31.7% of their weight sits in the same 409 holdings. IJS also reports MOH, MTCH, EMN, which the other does not. IWM also reports MOG.A, HUT, BTSG, which the other does not.
How is the overlap between IJS 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 IJS and 100% of IWM, so the number cannot exceed the smaller coverage.
Which holds more, IWM or IJS?
IJS reports 458 stock positions and IWM reports 1,966. 20.7% of IJS's weight sits in names IWM does not hold, and 68.0% of IWM's weight in names IJS does not hold. The ten largest positions are 8.2% of IJS and 3.4% of IWM.
How do IJS and IWM differ by sector?
The widest gap is Healthcare: IWM has 18.6 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.
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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.