IWM vs IWN overlap - what they share and where they differ
IWM and IWN share 53.7% of their weight across 1,215 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.
IWM and IWN
53.7%
1,215 shared positions
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
IWN
iShares Russell 2000 Value ETF
Reported positions cover 99% of the fund, 1,288 positions · Jun 30, 2026
Top 10: 5.5%·Holdings of IWN
Reported positions cover IWM 100%, IWN 99% of each fund. An overlap cannot exceed the smaller coverage, so a low figure can mean little overlap or thin reporting.
IWN vs IWM side by side
IWMiShares Russell 2000 ETF
1,785
stock positions reported to the SEC
39.2% of its weight is in 570 names IWN does not hold
IWNiShares Russell 2000 Value ETF
1,288
stock positions reported to the SEC
0.7% of its weight is in 73 names IWM does not hold
Where each fund's weight sits
Largest sectors for both funds
The widest gap is Real Estate: IWN has 11.2 points more of it.
The figures side by side
| IWM | IWN | |
|---|---|---|
| Filing date | Jun 30, 2026 | Jun 30, 2026 |
| Stock positions reported | 1,785 | 1,288 |
| Weight of the ten largest | 3.4% | 5.5% |
| Largest position | MOG.A 0.4% | VSAT 0.7% |
| Held alone | 570 positions, 39.2% | 73 positions, 0.7% |
| Covered by stock positions | 100% | 99% |
Holdings they share
| Stock | In IWM | In IWN | Counted |
|---|---|---|---|
| HUTHut 8 Corp. | 0.37% | 0.36% | 0.36% |
| CYTKCytokinetics, Inc. | 0.35% | 0.65% | 0.35% |
| VSATViasat, Inc. | 0.35% | 0.74% | 0.35% |
| UMBFUMB Financial Corp. | 0.33% | 0.62% | 0.33% |
| CTRECareTrust REIT, Inc. | 0.28% | 0.59% | 0.28% |
| ONBOld National Bancorp | 0.28% | 0.52% | 0.28% |
| TEXTerex Corp. | 0.26% | 0.54% | 0.26% |
| JBTMJBT Marel Corp. | 0.24% | 0.50% | 0.24% |
| FLRFluor Corp. | 0.23% | 0.34% | 0.23% |
| LUMNLumen Technologies, Inc. | 0.23% | 0.48% | 0.23% |
What each holds alone
The heaviest positions one fund reports and the other does not.
Only in IWM
Only in IWN
Questions people ask
Is IWM the same as IWN?
53.7% of their weight sits in the same 1,215 holdings. IWM also reports MOG.A, BTSG, AGX, which the other does not. IWN also reports ABOS, ACR, ACU, which the other does not.
How is the overlap between IWM and IWN 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 IWM and 99% of IWN, so the number cannot exceed the smaller coverage.
Which holds more, IWN or IWM?
IWM reports 1,785 stock positions and IWN reports 1,288. 39.2% of IWM's weight sits in names IWN does not hold, and 0.7% of IWN's weight in names IWM does not hold. The ten largest positions are 3.4% of IWM and 5.5% of IWN.
How do IWM and IWN differ by sector?
The widest gap is Real Estate: IWN has 11.2 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.
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.