ACWX vs IDEV overlap - what they share and where they differ
ACWX and IDEV share 67.4% of their weight across 715 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.
ACWX and IDEV
67.4%
715 shared positions
ACWX
iShares MSCI ACWI ex U.S. ETF
Reported positions cover 98% of the fund, 1,685 positions · Jul 31, 2026
Top 10: 16.2%·Holdings of ACWX
IDEV
iShares Core MSCI International Developed Markets ETF
Reported positions cover 98% of the fund, 2,125 positions · Jul 31, 2026
Top 10: 11.1%·Holdings of IDEV
Reported positions cover ACWX 98%, IDEV 98% of each fund. An overlap cannot exceed the smaller coverage, so a low figure can mean little overlap or thin reporting.
IDEV vs ACWX side by side
ACWXiShares MSCI ACWI ex U.S. ETF
1,685
stock positions reported to the SEC
30.4% of its weight is in 970 names IDEV does not hold
IDEViShares Core MSCI International Developed Markets ETF
2,125
stock positions reported to the SEC
12.5% of its weight is in 1,410 names ACWX does not hold
Where each fund's weight sits
Largest sectors for both funds
The widest gap is Technology: ACWX has 6.7 points more of it.
The figures side by side
| ACWX | IDEV | |
|---|---|---|
| Filing date | Jul 31, 2026 | Jul 31, 2026 |
| Stock positions reported | 1,685 | 2,125 |
| Weight of the ten largest | 16.2% | 11.1% |
| Largest position | TSM 4.9% | ASML 2.2% |
| Held alone | 970 positions, 30.4% | 1,410 positions, 12.5% |
| Covered by stock positions | 98% | 98% |
Holdings they share
| Stock | In ACWX | In IDEV | Counted |
|---|---|---|---|
| ASMLASML Holding N.V. | 1.73% | 2.19% | 1.73% |
| HSBCHSBC HOLDINGS PLC | 0.98% | 1.24% | 0.98% |
| MUFGMitsubishi Corporation | 0.89% | 1.14% | 0.89% |
| ROCHE HOLDING AG | 0.87% | 1.10% | 0.87% |
| RYROYAL BANK OF CANADA | 0.79% | 1.00% | 0.79% |
| NVSNovartis AG | 0.77% | 0.98% | 0.77% |
| AZNASTRAZENECA PLC | 0.70% | 0.88% | 0.70% |
| NESTLE S.A. | 0.70% | 0.88% | 0.70% |
| SHELSHELL PLC | 0.69% | 0.88% | 0.69% |
| SIEMENS AKTIENGESELLSCHAFT | 0.66% | 0.83% | 0.66% |
What each holds alone
The heaviest positions one fund reports and the other does not.
Only in ACWX
Only in IDEV
Questions people ask
Is ACWX the same as IDEV?
67.4% of their weight sits in the same 715 holdings. ACWX also reports TSM, SAMSUNG ELECTRONICS CO., LTD., SKHY, which the other does not. IDEV also reports DIPLOMA PLC, BLUESCOPE STEEL LTD, IMI PLC, which the other does not.
How is the overlap between ACWX and IDEV 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 ACWX and 98% of IDEV, so the number cannot exceed the smaller coverage.
Which holds more, IDEV or ACWX?
ACWX reports 1,685 stock positions and IDEV reports 2,125. 30.4% of ACWX's weight sits in names IDEV does not hold, and 12.5% of IDEV's weight in names ACWX does not hold. The ten largest positions are 16.2% of ACWX and 11.1% of IDEV.
How do ACWX and IDEV differ by sector?
The widest gap is Technology: ACWX has 6.7 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.