IWY vs MTUM overlap - what they share and where they differ
IWY and MTUM share 39.3% of their weight across 34 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.
IWY and MTUM
39.3%
34 shared positions
IWY
iShares Russell Top 200 Growth ETF
Reported positions cover 100% of the fund, 100 positions · Jun 30, 2026
Top 10: 62.8%·Holdings of IWY
MTUM
iShares MSCI USA Momentum Factor ETF
Reported positions cover 100% of the fund, 122 positions · Apr 30, 2026
Top 10: 42.8%·Holdings of MTUM
Reported positions cover IWY 100%, MTUM 100% of each fund. An overlap cannot exceed the smaller coverage, so a low figure can mean little overlap or thin reporting.
MTUM vs IWY side by side
IWYiShares Russell Top 200 Growth ETF
100
stock positions reported to the SEC
44.5% of its weight is in 66 names MTUM does not hold
MTUMiShares MSCI USA Momentum Factor ETF
122
stock positions reported to the SEC
40.7% of its weight is in 88 names IWY does not hold
Where each fund's weight sits
Largest sectors for both funds
The widest gap is Technology: IWY has 21.8 points more of it.
The figures side by side
| IWY | MTUM | |
|---|---|---|
| Filing date | Jun 30, 2026 | Apr 30, 2026 |
| Stock positions reported | 100 | 122 |
| Weight of the ten largest | 62.8% | 42.8% |
| Largest position | NVDA 14.2% | MU 5.6% |
| Held alone | 66 positions, 44.5% | 88 positions, 40.7% |
| Covered by stock positions | 100% | 100% |
Holdings they share
| Stock | In IWY | In MTUM | Counted |
|---|---|---|---|
| AVGOBROADCOM INC | 5.64% | 5.40% | 5.40% |
| GOOGLALPHABET INC | 11.51% | 5.33% | 5.33% |
| MUMICRON TECHNOLOGY INC | 4.87% | 5.56% | 4.87% |
| NVDANVIDIA CORP | 14.16% | 4.64% | 4.64% |
| AMDADVANCED MICRO DEVICES INC | 3.25% | 4.03% | 3.25% |
| AMATAPPLIED MATERIALS INC | 1.97% | 2.36% | 1.97% |
| LRCXLAM RESEARCH CORP | 1.86% | 3.61% | 1.86% |
| CATCATERPILLAR INC | 1.67% | 3.21% | 1.67% |
| KLACKLA CORP | 1.36% | 1.61% | 1.36% |
| GEVGE VERNOVA INC | 1.09% | 2.53% | 1.09% |
What each holds alone
The heaviest positions one fund reports and the other does not.
Only in IWY
Only in MTUM
Questions people ask
Is IWY the same as MTUM?
39.3% of their weight sits in the same 34 holdings. IWY also reports AAPL, TSLA, MSFT, which the other does not. MTUM also reports INTC, JNJ, EXXON MOBIL CORPORATION, which the other does not.
How is the overlap between IWY and MTUM 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 IWY and 100% of MTUM, so the number cannot exceed the smaller coverage.
Which holds more, MTUM or IWY?
IWY reports 100 stock positions and MTUM reports 122. 44.5% of IWY's weight sits in names MTUM does not hold, and 40.7% of MTUM's weight in names IWY does not hold. The ten largest positions are 62.8% of IWY and 42.8% of MTUM.
How do IWY and MTUM differ by sector?
The widest gap is Technology: IWY has 21.8 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
IWY 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.